From: To: Subject: krnet Digest 5 Aug 2002 16:53:11 -0000 Issue 489 Date: Monday, August 05, 2002 9:55 AM krnet Digest 5 Aug 2002 16:53:11 -0000 Issue 489 Topics (messages 11838 through 11867): Re: cooling under the canopy 11838 by: AeroPax.aol.com 11839 by: Dana Overall 11842 by: Tony Alderman 11848 by: ROBERT COOPER 11851 by: Daniel Heath 11852 by: Daniel Heath 11853 by: Rick Wilson Re: 2 stroke engine 11840 by: Bob Farmer Re: Canopy Cutting 11841 by: virgnvs.juno.com Re: Belly Boards 11843 by: Brian Kraut 11844 by: Mark Langford Car mirror assemblies 11845 by: Ronald Freiberger Re: KR Gathering at Red Oak 11846 by: Sam Sayer Re: Able Experimental Engines and Alimizer products 11847 by: James Wester 11850 by: Robert X. Cringely 11861 by: LEOADRENA Web Page Update - Dual Control Sticks 11849 by: Rick Re: Aileron dimensions 11854 by: Jerry Mahurin cooling vents 11855 by: Rick Wilson Speed brake actuator 11856 by: JIM VANCE Aileron trim using a mirror motor 11857 by: JIM VANCE 11859 by: Daniel Heath Vents: don't do it wrong 11858 by: Serge F. VIDAL tufting feedback, duct flow, updraft cooling 11860 by: Mark Langford Re: KR2 heavier engine support idea 11862 by: van Rooyen, Hennie(SF02) The AS5046 airfoil 11863 by: van Rooyen, Hennie(SF02) Re: Suggestion for a wing fold mechanism 11864 by: van Rooyen, Hennie(SF02) Re: re design of kr---Hennie van Rooyen 11865 by: van Rooyen, Hennie(SF02) 11866 by: van Rooyen, Hennie(SF02) Re: designing airplanes 11867 by: van Rooyen, Hennie(SF02) Administrivia: To subscribe to the digest, e-mail: To unsubscribe from the digest, e-mail: To post to the list, e-mail: ---------------------------------------------------------------------- Date: Sun, 4 Aug 2002 06:34:32 EDT To: krnet@mailinglists.org From: AeroPax@aol.com Subject: Re: KR> cooling under the canopy Message-ID: <199.ad6ee9b.2a7e5d38@aol.com> --part1_199.ad6ee9b.2a7e5d38_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Hi All, New lister here. Pax Rolfe from Tulsa OK. Have been smitten by the KR bug since I saw Marty Roberts return from Osh last week. I fueled his plane yesterday and what a beauty. He took off and ATC wouldn't give him a turn, he practically ran over the cessana traffic in front of him. I have my PVT and INST tickets and am just a few hours away from my COMM. Currently the Ramp Services Mananger at Roadhouse Aviation, the new FBO at KRVS. Any KR pilots stopping by please ask for us. I plan to start building before the end of the year. My contribution to this topic is that on quite a few of the production aircraft I see the NACA ducts for cabin cooling are just aft of the firewall on the sides of the fuselage. looks like a pretty simple addition for the KR. In a message dated 8/3/2002 10:06:07 PM Central Daylight Time, danrh@att.net writes: > NACA ducts are nice, but you must put them in a not negative pressure area. > It is difficult, if not impossible to find one that you can reach from the > cockpit. > --part1_199.ad6ee9b.2a7e5d38_boundary-- ------------------------------ Date: Sun, 04 Aug 2002 07:03:21 -0400 To: krnet@mailinglists.org From: "Dana Overall" Subject: Re: KR> cooling under the canopy Message-ID: As Daniel pointed out, installing NACA ducts with consideration for negitive pressure areas is paramount. On a plans built (still don't know what that is) the only place you can put two are in that "bay" just north of the instrument panel, forward of the main spar. Makes getting to them difficult. For those who have placed the widest part of the fush where it needs to be, at the shoulders, you have more options. Dana Overall 1999 & 2000 National KR gathering host Richmond, KY http://rvflying.tripod.com do not archive _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com ------------------------------ Date: Sun, 4 Aug 2002 10:56:33 -0400 To: "Dana Overall" , From: "Tony Alderman" Subject: Re: KR> cooling under the canopy Message-ID: <004101c23bc7$202f59e0$ab8a4004@computer> Just a ? could you not install the NACA aft of the firewall then duct the air back to the cockpit with a shut off there? Tony Tony Alderman Durham NC t-hawk@mindspring.com ----- Original Message ----- From: "Dana Overall" To: Sent: Sunday, August 04, 2002 7:03 AM Subject: Re: KR> cooling under the canopy > As Daniel pointed out, installing NACA ducts with consideration for negitive > pressure areas is paramount. On a plans built (still don't know what that > is) the only place you can put two are in that "bay" just north of the > instrument panel, forward of the main spar. Makes getting to them > difficult. For those who have placed the widest part of the fush where it > needs to be, at the shoulders, you have more options. > > > Dana Overall > 1999 & 2000 National KR gathering host > Richmond, KY > http://rvflying.tripod.com > do not archive > > > _________________________________________________________________ > Chat with friends online, try MSN Messenger: http://messenger.msn.com > > > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > or http://www.bouyea.net/ for the Word files > ------------------------------ Date: Sun, 4 Aug 2002 15:01:03 -0400 To: "Daniel Heath" , "krnet" From: "ROBERT COOPER" Subject: Re: KR> cooling under the canopy Message-ID: ------=_NextPart_001_0000_01C23BC7.C0E29280 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Gene Byrd had NACA ducts in his KR-2S and said they were ineffective. He = replaced them with a scoop for better cooling. A bit more drag but the ad= ded confort was worht it. Jack Cooper ----- Original Message ----- From: Daniel Heath Sent: Saturday, August 03, 2002 11:06 PM To: krnet@mailinglists.org Subject: RE: KR> cooling under the canopy NACA ducts are nice, but you must put them in a not negative pressure are= a. It is difficult, if not impossible to find one that you can reach from th= e cockpit. Daniel R. Heath See our KR2 at: http://kr-builder.org See our EAA Chapter 242at: http://WWW.EAA242.ORG --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.325 / Virus Database: 182 - Release Date: 2/19/2002 --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , NOT "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org =20 For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp or http://www.bouyea.net/ for the Word files ------=_NextPart_001_0000_01C23BC7.C0E29280-- ------------------------------ Date: Sun, 4 Aug 2002 18:48:18 -0700 To: "krnet" From: "Daniel Heath" Subject: RE: KR> cooling under the canopy Message-ID: That is how I know they don't work. I had them on the Little Beast and had to add an air scoop to get any air. Daniel R. Heath See our KR2 at: http://kr-builder.org See our EAA Chapter 242at: http://WWW.EAA242.ORG --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.325 / Virus Database: 182 - Release Date: 2/19/2002 ------------------------------ Date: Sun, 4 Aug 2002 18:55:12 -0700 To: From: "Daniel Heath" Subject: RE: KR> cooling under the canopy Message-ID: I think installing NACA vents in any place that has positive pressure will work. But, as you say, you will have to duct them to the "cabin" with the appropriate controls available. Jerry and I prefer simple and inexpensive. Snap vents cost about $5 and are a "snap" to install and control. Daniel R. Heath See our KR2 at: http://kr-builder.org See our EAA Chapter 242at: http://WWW.EAA242.ORG --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.325 / Virus Database: 182 - Release Date: 2/19/2002 ------------------------------ Date: Sun, 4 Aug 2002 15:53:50 -0700 (PDT) To: KRNET@MAILINGLISTS.ORG From: Rick Wilson Subject: cooling under the canopy Message-ID: <20020804225350.19088.qmail@web21206.mail.yahoo.com> Hi, speaking of air scoops, what kind and size is best to use and where is the best place to put them on a kr2? (using the standard R/R canopy). Thanks, Rick Wilson. __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com ------------------------------ Date: Sun, 4 Aug 2002 07:43:57 -0400 To: "krnet" , "van Rooyen, Hennie\(SF02\)" From: "Bob Farmer" Subject: Re: KR> 2 stroke engine Message-ID: <001801c23bac$385fa080$d24562d8@oemcomputer> If others are looking to use a two stroke engine, as I am, they might look at the Hirth 3203 which weighs 98 lbs with elec start & gearbox. It produces 126 ft lbs & 63 HP with 2.29 reduction @ 2620 (prop speed). Max. 65 HP @ 6300 (engine RPM) or the Hirth F30. If Hennie or anyone else would like to help me build my engine comparison page http://www.foamhead.com/Builders%20pages/engine.html E-Mail me at foamhead@ls.net or rfarmer@naxs.net with any info on any engine you think might work in an airplane like the KR. Bob Farmer ----- Original Message ----- From: "van Rooyen, Hennie(SF02)" > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > or http://www.bouyea.net/ for the Word files > > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > or http://www.bouyea.net/ for the Word files > > ------------------------------ Date: Sun, 4 Aug 2002 09:26:57 -0400 To: flykr2s@wi.rr.com From: virgnvs@juno.com Cc: krnet@mailinglists.org Subject: Re: KR> Canopy Cutting Message-ID: <20020804.092659.-274085.0.virgnvs@juno.com> Mark, next time try the #426 or 456 1-1/4, 1-1/2 " wheels. They are fiberglass and do NOT shatter, Virg On Sat, 3 Aug 2002 23:51:58 -0500 "Mark Jones" writes: > Thanks to all who responded to the best method to cut a canopy. I > just walked in from the shop where I just completed cutting up my > $470 Dragonfly canopy. I am now truly committed to a gull wing > design now!!! > After debating on everyone's ideas, I popped a cutting wheel on my > Dremel and commenced cutting. Very easy and very smooth...no cracks > and virtually no ridge from melting Plexiglas. It is also amazing > how quickly one can cut a canopy door with a Dremel. I did go > through about six cutting wheels. I used the very thin ones and they > cut great, just kept breaking them. > > Mark Jones (N886MJ) > Wales, WI USA > E-mail me at flykr2s@wi.rr.com > Visit my KR-2S CorvAIRCRAFT web site at > http://mywebpage.netscape.com/n886mj/homepage.html > > > ------------------------------ Date: Sun, 04 Aug 2002 11:56:48 -0400 To: Tim Brown From: Brian Kraut CC: Group KR NET Subject: Re: KR> Belly Boards Message-ID: <3D4D4EC0.5000701@earthlink.net> I have a piece of 36" X 6" X 3/32" aluminum that I planned on using. It probably doesn't weight much more than a pound. I expect that by the time you reinforce a foam and glass board so the attach points don't rip out you won't save all that much weight for all the extra effort. What I heard is that you can do it at the forward spar or the aft. The aft spar gives you the added benefit of lowering the nose a little during approach so you have better visability. I never did install my belly board. I will see how things go without it and add it later if I need to. I don't want to spend the couple hundred bucks for wheeel pants right now and I may increase drag enough without them that I don't need the belly board! I would have put it in if I built the plane from scratch. It would also retract flush into the fusalage. Tim Brown wrote: >Dear Net: > >I am getting ready to start construction on my >belly board and below is what I am thinking about >doing based on what has been posted here over the >past couple years....but I also have a couple >questions. > >My plan is to use Last-A-Foam, 1/4" covered with >BID, outside edge with flox, 2" diameter holes >with micro protecting the foam at the holes. > >Question: Is one layer of BID enough? > >I am also considering using a metal bracket at >the belly board similar to the manual's "Outboard >Hinge Bracket" on page 109. I haven't decided >whether to place the "tail" towards the outside >edge of the bracket, or to attach the "tail" to >the hinge. Comments? I just don't know whether >the metal to the edge or the metal to the hinge >will be stronger. My plan is to glass one side, >scrape out foam before glassing the other side >and to flox the metal in place at the same time I >glass the other side. Or maybe a 1/4" ply hard >point would be better here with the metal bolted >on through it. COMMENTS? > > > >My plan is to use a full length piano hinge for >attachment. > >One thought I have is to flox and glass in a hard >point of 1/4" ply the entire length...maybe 1" in >width. Or as an alternative, glass one side, >scrape away about a 1/8" of foam, coat with flox, >smush (technical term) in the hinge, more flox, >then glass. COMMENTS? > >Finally....Is there a best place to attach the >belly board? Near the forward spar? Rear Spar? >Split the difference? And will flox and glass be >enough or should I run a few bolts through the >3/32" floor (probably with a 1/4" backer for >strength) in addition to flox and glass? > >I'll add photos to my web site as I make >progress. > >Thanks to all who respond. > >Tim > > > >__________________________________________________ >Do You Yahoo!? >Yahoo! Health - Feel better, live better >http://health.yahoo.com > >--------------------------------------------------------------------- >To post to the list, email: krnet@mailinglists.org , NOT "reply all" > >To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org >For additional commands, e-mail: krnet-help@mailinglists.org > >See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp >or http://www.bouyea.net/ for the Word files > > ------------------------------ Date: Sun, 4 Aug 2002 11:05:36 -0500 To: "Group KR NET" From: "Mark Langford" Subject: Re: KR> Belly Boards Message-ID: <011801c23bd0$c5acfcc0$0100a8c0@TD310> Tim Brown wrote: > My plan is to use Last-A-Foam, 1/4" covered with > BID, outside edge with flox, 2" diameter holes > with micro protecting the foam at the holes. > > Question: Is one layer of BID enough? I haven't seen any replies to this one (until a minute ago) so I'll throw this in. A quick search of the KRnet archives (at http://www.maddyhome.com/krsrch/index.jsp ) found the following post, and 91 more. I'm still amazed that there have only been 770 visits to this web site since it's been up and running. When Larry comes out with the Newsletter CD, there were several documented in various issues, and they are apparently effective at improving the view of the runway and slowing you down in ground effect. One thing I can tell you for sure is that one layer of glass on each side of quarter inch Lastofoam won't do. You'll need at least two on each side, and probably three, depending on how the actuation lever is connected. Maybe two all over and three or four in the area of the actuator, in a gradient. One thing you don't want is a belly board flopping around in the breeze while you're trying to land. See archived message below: ---------- Date: Oct 23, 1998 10:04 PM From: WARRON GRAY Subject: KR: Re: Re:speed brake I ahve a belly speed brake built into my "s" after the discussions with steve makish and bob lester i felt that any help would do. I have the hinge mounted at the same area as the main spar, boxed the whole thing in. the hinge is attached to the boxed section apart from the spar so as not to do anything funny to the spar. the board is the span of the fuse. and about 2 feet wide . i drilled 2 inch holes in it and when it is in the retracted position the holes are plugged with foam to cut down on drag when it is down the holes are open to allow air to flow through. it was used on another homebuilt quite effectively. Warron in Flat lawdy dale ------------------------- Mark Langford, Huntsville, Alabamamailto:langford@hiwaay.netsee KR2S N56ML at http://home.hiwaay.net/~langford ------------------------------ Date: Sun, 4 Aug 2002 12:44:01 -0400 To: "KRNET" From: "Ronald Freiberger" Subject: Car mirror assemblies Message-ID: For all the guys who wanted a trim device, check WWW.goldmine-elec.com. Download the August newsletter and look on Page 7. They are $2.49 each Ron Freiberger... mailto:ron.martha@mindspring.com ------------------------------ Date: Sun, 4 Aug 2002 14:15:50 -0400 To: "KR Mailing Lists" From: "Sam Sayer" Subject: RE: KR Gathering at Red Oak Message-ID: ------=_NextPart_001_0000_01C23BC1.6FB73600 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi-Netters: I'm looking for one or two gentlemen from the Florida and/or South Georgi= a Area to share expenses on the trip to and from Red Oak, Iowa. I have reservations at the Red Coach Inn for Thursday, Friday and Saturda= y nights ( Sept. 19th - 22nd). I plan to drive straight through. I need h= elp with the driving and expenses, otherwise I will not be able to go. Pl= ease let me know if anyone is interested. Sam Sayer karibird37@msn.com Zephyrhills, Florida Phone: (813) 782-3302Get more from the Web. FREE MSN Explorer download := http://explorer.msn.com ------=_NextPart_001_0000_01C23BC1.6FB73600-- ------------------------------ Date: Sun, 4 Aug 2002 14:45:00 -0400 To: "Thomas Andersen" , From: "James Wester" Subject: Re: KR> Able Experimental Engines and Alimizer products Message-ID: <003501c23be7$0a827080$634f87d1@joflywester> I tried to get a hold of them for several weeks before there was any response ! Just wanted a good look at that carb , and the intake for the legacy 2.2 . I finally gave up . Think it's just a one horse operation .... ----- Original Message ----- From: Thomas Andersen To: Sent: Thursday, August 01, 2002 5:54 PM Subject: KR> Able Experimental Engines and Alimizer products > Hi Netters, > Has anyone purchased any products from Able Experimental Engines? This VW > looks great for a KR, 2275cc and 120hp. I'm leery of a company that wants > to do a lay-away plan for me though. I thought only K-Mart does that? > -Tom Andersen > Greensboro NC > > > ----- Original Message ----- > From: "Ronald Freiberger" > To: > Cc: > Sent: Friday, July 12, 2002 7:04 PM > Subject: RE: KR> What I Don't like about KR > > > > I didn't care about Legal, nor did the cops, but getting it onto a > trailer, > > even ofr a makeshift short trip, was apain in the posterior > > > > Ron Freiberger... > > mailto:ron.martha@mindspring.com > > > > > > > > -----Original Message----- > > From: virgnvs@juno.com [mailto:virgnvs@juno.com] > > Sent: Friday, July 12, 2002 12:47 PM > > To: ron.martha@mindspring.com > > Cc: krnet@mailinglists.org > > Subject: Re: KR> What I Don't like about KR > > > > > > Right. It is just a bit too wide for legal street towing. Built > > my KR-2 with the square sides and put only a short tailpost in the fus > > area unly. Will use the hinge bolts to fasten the tailpost to it later, > > Virg > > > > On Fri, 12 Jul 2002 09:43:16 -0400 "Ronald Freiberger" > > writes: > > > I've always thought KR aircraft were excellent, but there are two > > > things > > > that have annoyed me; maybe I'm getting crotchety. > > > > > > When I moved last year, I had a real problem getting the fuselage > > > moved, > > > because the landing gear tread is just a bit wider that almost all > > > rental > > > trailer and car carriers. I would make it down to 80 inches if I > > > did > > > another. > > > > > > I envy those guys who built a plne in the alley in 6 weeks, 'cause > > > my > > > project runs into years. All this time, I've been working around > > > that > > > vertical stabiliser post sticking up like a sore ----. If I started > > > from > > > scratch, I'd pit in a dummy plug and glue that hummer on later. > > > > > > Ron Freiberger... > > > mailto:ron.martha@mindspring.com > > > > > > > > > > > > --------------------------------------------------------------------- > > > To post to the list, email: krnet@mailinglists.org , NOT "reply > > > all" > > > > > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > > > For additional commands, e-mail: krnet-help@mailinglists.org > > > > > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > > > or http://www.bouyea.net/ for the Word files > > > > > > > > > > > > --------------------------------------------------------------------- > > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > > For additional commands, e-mail: krnet-help@mailinglists.org > > > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > > or http://www.bouyea.net/ for the Word files > > > > > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > or http://www.bouyea.net/ for the Word files > > ------------------------------ Date: Sun, 4 Aug 2002 12:43:04 -0700 To: krnet@mailinglists.org From: "Robert X. Cringely" Subject: Re: KR> Able Experimental Engines and Alimizer products Message-Id: If it is the Altimizer carb that interests you, it is a slightly modified QuikSilver motorcycle carb from Edelbrock. The modification, as I understand it, is extending the standard mixture control so it reaches the cockpit. Otherwise the engines are pretty much standard except they claim higher horsepower and torque at lower RPMs than most of their competitors. The engines from Bradley Aerobat (Teenie II clone) make similar power and torque claims. Maybe they use the same cam shaft or are even from the same builder. Check it out. Bob At 2:45 PM -0400 8/4/02, James Wester wrote: >I tried to get a hold of them for several weeks before there was any >response ! Just wanted a good look at that carb , and the intake for the >legacy 2.2 . I finally gave up . Think it's just a one horse operation .... >----- Original Message ----- >From: Thomas Andersen >To: >Sent: Thursday, August 01, 2002 5:54 PM >Subject: KR> Able Experimental Engines and Alimizer products > > >> Hi Netters, >> Has anyone purchased any products from Able Experimental Engines? This VW >> looks great for a KR, 2275cc and 120hp. I'm leery of a company that wants >> to do a lay-away plan for me though. I thought only K-Mart does that? >> -Tom Andersen >> Greensboro NC >> >> >> ----- Original Message ----- >> From: "Ronald Freiberger" >> To: >> Cc: >> Sent: Friday, July 12, 2002 7:04 PM >> Subject: RE: KR> What I Don't like about KR >> >> >> > I didn't care about Legal, nor did the cops, but getting it onto a >> trailer, >> > even ofr a makeshift short trip, was apain in the posterior >> > >> > Ron Freiberger... >> > mailto:ron.martha@mindspring.com >> > >> > >> > >> > -----Original Message----- >> > From: virgnvs@juno.com [mailto:virgnvs@juno.com] >> > Sent: Friday, July 12, 2002 12:47 PM >> > To: ron.martha@mindspring.com >> > Cc: krnet@mailinglists.org >> > Subject: Re: KR> What I Don't like about KR >> > >> > >> > Right. It is just a bit too wide for legal street towing. Built >> > my KR-2 with the square sides and put only a short tailpost in the fus >> > area unly. Will use the hinge bolts to fasten the tailpost to it later, >> > Virg >> > >> > On Fri, 12 Jul 2002 09:43:16 -0400 "Ronald Freiberger" >> > writes: >> > > I've always thought KR aircraft were excellent, but there are two >> > > things >> > > that have annoyed me; maybe I'm getting crotchety. >> > > >> > > When I moved last year, I had a real problem getting the fuselage >> > > moved, >> > > because the landing gear tread is just a bit wider that almost all >> > > rental >> > > trailer and car carriers. I would make it down to 80 inches if I >> > > did >> > > another. >> > > >> > > I envy those guys who built a plne in the alley in 6 weeks, 'cause >> > > my >> > > project runs into years. All this time, I've been working around >> > > that >> > > vertical stabiliser post sticking up like a sore ----. If I started >> > > from >> > > scratch, I'd pit in a dummy plug and glue that hummer on later. >> > > >> > > Ron Freiberger... >> > > mailto:ron.martha@mindspring.com >> > > >> > > >> > > >> > > --------------------------------------------------------------------- >> > > To post to the list, email: krnet@mailinglists.org , NOT "reply >> > > all" >> > > >> > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org >> > > For additional commands, e-mail: krnet-help@mailinglists.org >> > > >> > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp >> > > or http://www.bouyea.net/ for the Word files >> > > >> > > >> > >> > >> > --------------------------------------------------------------------- >> > To post to the list, email: krnet@mailinglists.org , NOT "reply all" >> > >> > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org >> > For additional commands, e-mail: krnet-help@mailinglists.org >> > >> > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > > > or http://www.bouyea.net/ for the Word files >> > >> >> >> --------------------------------------------------------------------- >> To post to the list, email: krnet@mailinglists.org , NOT "reply all" >> >> To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org >> For additional commands, e-mail: krnet-help@mailinglists.org >> >> See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp >> or http://www.bouyea.net/ for the Word files >> >> > > > >--------------------------------------------------------------------- >To post to the list, email: krnet@mailinglists.org , NOT "reply all" > >To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org >For additional commands, e-mail: krnet-help@mailinglists.org > >See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp >or http://www.bouyea.net/ for the Word files -- ------------------------------ Date: Wed, 3 Jun 1998 11:22:57 -0300 To: , "Robert X. Cringely" From: "LEOADRENA" Subject: Re: KR> Able Experimental Engines and Alimizer products Message-ID: <001001bd8efb$1b06ae00$01000a0a@dummy.net> Hi Kr builders!!! My experience with the Able experimental was a disaster , i ordered a carb and intake pipes what was 1200 usd they charged me on the very first day on my credicard and only send me the carbs 60 days later and the intake pipes never came and every time i called them they have the same response , it,s coming , it's coming we are having problems with welding , and it has 2 years . After that i gave up from this guys and now my plane has a continental O-200,every one has parts and i dont need to be upset about this kind of people . Think twice buy once. Leo. Brazil. http://www.geocities.com/adrenabh2001/speedboy.html?896882907630 > If it is the Altimizer carb that interests you, it is a slightly > modified QuikSilver motorcycle carb from Edelbrock. The > modification, as I understand it, is extending the standard mixture > control so it reaches the cockpit. Otherwise the engines are pretty > much standard except they claim higher horsepower and torque at lower > RPMs than most of their competitors. The engines from Bradley > Aerobat (Teenie II clone) make similar power and torque claims. > Maybe they use the same cam shaft or are even from the same builder. > Check it out. > > > Bob > > > > At 2:45 PM -0400 8/4/02, James Wester wrote: > >I tried to get a hold of them for several weeks before there was any > >response ! Just wanted a good look at that carb , and the intake for the > >legacy 2.2 . I finally gave up . Think it's just a one horse operation .... > >----- Original Message ----- > >From: Thomas Andersen > >To: > >Sent: Thursday, August 01, 2002 5:54 PM > >Subject: KR> Able Experimental Engines and Alimizer products > > > > > >> Hi Netters, > >> Has anyone purchased any products from Able Experimental Engines? This VW > >> looks great for a KR, 2275cc and 120hp. I'm leery of a company that wants > >> to do a lay-away plan for me though. I thought only K-Mart does that? > >> -Tom Andersen > >> Greensboro NC > >> > >> > >> ----- Original Message ----- > >> From: "Ronald Freiberger" > >> To: > >> Cc: > >> Sent: Friday, July 12, 2002 7:04 PM > >> Subject: RE: KR> What I Don't like about KR > >> > >> > >> > I didn't care about Legal, nor did the cops, but getting it onto a > >> trailer, > >> > even ofr a makeshift short trip, was apain in the posterior > >> > > >> > Ron Freiberger... > >> > mailto:ron.martha@mindspring.com > >> > > >> > > >> > > >> > -----Original Message----- > >> > From: virgnvs@juno.com [mailto:virgnvs@juno.com] > >> > Sent: Friday, July 12, 2002 12:47 PM > >> > To: ron.martha@mindspring.com > >> > Cc: krnet@mailinglists.org > >> > Subject: Re: KR> What I Don't like about KR > >> > > >> > > >> > Right. It is just a bit too wide for legal street towing. Built > >> > my KR-2 with the square sides and put only a short tailpost in the fus > >> > area unly. Will use the hinge bolts to fasten the tailpost to it later, > >> > Virg > >> > > >> > On Fri, 12 Jul 2002 09:43:16 -0400 "Ronald Freiberger" > >> > writes: > >> > > I've always thought KR aircraft were excellent, but there are two > >> > > things > >> > > that have annoyed me; maybe I'm getting crotchety. > >> > > > >> > > When I moved last year, I had a real problem getting the fuselage > >> > > moved, > >> > > because the landing gear tread is just a bit wider that almost all > >> > > rental > >> > > trailer and car carriers. I would make it down to 80 inches if I > >> > > did > >> > > another. > >> > > > >> > > I envy those guys who built a plne in the alley in 6 weeks, 'cause > >> > > my > >> > > project runs into years. All this time, I've been working around > >> > > that > >> > > vertical stabiliser post sticking up like a sore ----. If I started > >> > > from > >> > > scratch, I'd pit in a dummy plug and glue that hummer on later. > >> > > > >> > > Ron Freiberger... > >> > > mailto:ron.martha@mindspring.com > >> > > > >> > > > >> > > > >> > > --------------------------------------------------------------------- > >> > > To post to the list, email: krnet@mailinglists.org , NOT "reply > >> > > all" > >> > > > >> > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > >> > > For additional commands, e-mail: krnet-help@mailinglists.org > >> > > > >> > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > >> > > or http://www.bouyea.net/ for the Word files > >> > > > >> > > > >> > > >> > > >> > --------------------------------------------------------------------- > >> > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > >> > > >> > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > >> > For additional commands, e-mail: krnet-help@mailinglists.org > >> > > >> > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > > > > or http://www.bouyea.net/ for the Word files > >> > > >> > >> > >> --------------------------------------------------------------------- > >> To post to the list, email: krnet@mailinglists.org , NOT "reply all" > >> > >> To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > >> For additional commands, e-mail: krnet-help@mailinglists.org > >> > >> See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > >> or http://www.bouyea.net/ for the Word files > >> > >> > > > > > > > >--------------------------------------------------------------------- > >To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > > >To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > >For additional commands, e-mail: krnet-help@mailinglists.org > > > >See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > >or http://www.bouyea.net/ for the Word files > > > -- > > --------------------------------------------------------------------- > To post to the list, email: krnet@mailinglists.org , NOT "reply all" > > To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org > For additional commands, e-mail: krnet-help@mailinglists.org > > See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp > or http://www.bouyea.net/ for the Word files > > > ------------------------------ Date: Sun, 4 Aug 2002 13:29:04 -0600 To: KR Listserv From: Rick Subject: Web Page Update - Dual Control Sticks Message-ID: <41ED2F1280124E4D8B88691C9A9B5FDE011B7E@mail.binoids.com> Hi Guys >> Do you all name your planes as we do with boats? Wingnut I about 80% done my Dual control sticks. They are going in front of the forward spar(!!!????) I have taken a lot of detailed pictures for this assembly and hope it helps anyone who wants to borrow my idea's. Click on the Dual Control Link at the top of the page. http://www.hubka.com/kr_main.htm I'm getting an html error that I will fix tomorrow but everything appears and loads. It will be a few weeks before I'm done because we're going on a short vacation in a few days. Take Care and Happy building Rick Hubka http://www.hubka.com/kr_main.htm rick@hubka.com 65 Butler Crescent NW Calgary AB T2L 1K4 Canada ------------------------------ Date: Sun, 04 Aug 2002 19:32:34 -0400 To: "kr net" From: "Jerry Mahurin" Subject: Re: KR> Aileron dimensions Message-ID: I have seen several comments in the >archives that the roll rate of a KR-2 is sluggish when >compared to the elevator response. > The "sluggish" roll rate is due to the diffrential action of the ailerons; more up than down. The plus is that you don't have to use rudder on turns, but it will lower your roll rate..... If you want to go aerobatic, you will have to equalize the aileron output and use the rudder..... Jerry Mahurin Lugoff, SC http://kr-builder.org http://jerrymahurin.com ------------------------------ Date: Sun, 4 Aug 2002 17:12:11 -0700 (PDT) To: KRNET@MAILINGLISTS.ORG From: Rick Wilson Subject: cooling vents Message-ID: <20020805001211.62717.qmail@web21204.mail.yahoo.com> Thanks Daniel, That sounds like the simplest and best thing to do. I know some kind of air vent has to be used, the heat gets unbearable in mine quick. Thanks again, Rick Wilson. __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com ------------------------------ Date: Sun, 4 Aug 2002 21:39:23 -0500 To: "kr net" From: "JIM VANCE" Subject: Speed brake actuator Message-ID: <000601c23c29$9caffc60$33000a0a@oemcomputer> ------=_NextPart_000_0011_01C23BFF.66007340 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The 80's model GM products have three separate motors to actuate the = three axes of the seat. The newer cars have one motor with solenoid = clutches--they weigh about three pounds. The total travel is 6.4 inches in 11 seconds. At 12 volts, the drive = draws 2.5 amperes no-load, and stalls at the stop at 7 amperes. The drive motor and flexible cable weighs 22 ounces, and the slide = weighs 23 ounces. You end up with three drive motors, six flexible drive cables, and two = actuators. Jim Vance ------=_NextPart_000_0011_01C23BFF.66007340-- ------------------------------ Date: Sun, 4 Aug 2002 21:33:51 -0500 To: "kr net" From: "JIM VANCE" Subject: Aileron trim using a mirror motor Message-ID: <000501c23c29$9bb5bde0$33000a0a@oemcomputer> ------=_NextPart_000_0007_01C23BFE.A03BC9C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable The mirror motor drives a 1/4-28 screw. By drilling out the back side = of the case and using all-thred, you can have any travel that you need. = The alll-thred must be constrained from turning. The two-motor assembly weighs 3.8 ounces. Jim Vance ------=_NextPart_000_0007_01C23BFE.A03BC9C0-- ------------------------------ Date: Mon, 5 Aug 2002 05:45:26 -0700 To: "kr net" From: "Daniel Heath" Subject: RE: KR> Aileron trim using a mirror motor Message-ID: If you are going to consider using this for trim, consider that the assembly already has built in stops and if you can get the travel without drilling out the back, that will make it much more simple. We haven't installed ours yet, but we will certainly post the results and installation when we do. Daniel R. Heath See our KR2 at: http://kr-builder.org See our EAA Chapter 242at: http://WWW.EAA242.ORG --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.325 / Virus Database: 182 - Release Date: 2/19/2002 ------------------------------ Date: Mon, 5 Aug 2002 08:54:52 +0200 To: From: "Serge F. VIDAL" Subject: Vents: don't do it wrong Message-ID: <00ba01c23c4e$bb1f46e0$7bf521c4@co.za> Whatever you do on vents, don't do what I did! I bought some NACA airscoops from the Aircraft Spruce catalogue. That was a good idea. But I had to put them on the fuselage sides, just aft of the instrument panel. That was a crap idea. No positive pressure there, it is already after the fuselage taper. So, they don't work, period. If you are in the building stage, these NACA vents are a good thing to install, but put them aft of the instrument panel, and make them open and close with a piano wire. Serge VIDAL KR2 ZS-WEC Johannesburg, South Africa ------------------------------ Date: Mon, 5 Aug 2002 09:26:03 -0500 To: From: "Mark Langford" Subject: tufting feedback, duct flow, updraft cooling Message-ID: <009001c23c8c$086ec3c0$5f0ca58c@mlangford> KRnetHeads, Just to keep y'all up to date with my tufting request, Dean Selby did exactly that on Saturday, and reports that all of his tufts (he completely covered the top of the cowling with them) laid down tight against the cowling, except for right up against the center of the windshield base, which lifted maybe a quarter of an inch. That's some pretty attached flow! He got similar results in a maximum climb, which is not what I would have expected judging by the image I refered to last week, but Don's comments below help put that in perspective. Others are welcome to do the tufting and report back as well. More data points would be good. Also, Don Reid has written a program that shows pressure distribution graphically, although it was intended for use with airfoils. I digitized my cowling outline, along with the rest of the fuselage to give it "closure" and sent a data file of the points to Don. He ran it and produced the images at: http://home.hiwaay.net/~langford/pressure0.gif http://home.hiwaay.net/~langford/SurfaceV0.gif http://home.hiwaay.net/~langford/pressure6.gif http://home.hiwaay.net/~langford/SurfaceV6.gif Don's explanation of what you're seeing is: ------------------------ >>You have to look at all four pictures, two at a time. For example, take the alpha=0 case. The surface velocity is shown as v/V, which represents the ratio of surface velocity to free stream velocity. From Bernouilli's equation, when v/V is greater than 1.0, the pressure is lower than in the free stream (negative pressure coefficient) and when v/V is less than 1.0, then the pressure is higher than in the free stream (positive pressure coefficient). At alpha=0, the low velocity/high pressure regions are at the leading edge, the front of the canopy, and what is generally called the pressure recovery region at the back. A negative pressure coefficient is shown as a blue and positive pressure coefficient is shown as red. Look at the surfaceV and pressure coefficient displays and compare the two. Airfoils show exactly the same behavior. At low alpha, the pressure coefficient on the bottom surface is often negative, but when the airfoil is generating positive lift, the negative pressure coefficient on the top surface is more negative than on the bottom surface and the integral over the surface of the airfoil is positive lift. What the two alpha=0 pictures show is that in cruise conditions, cooling inlet in the front and outlet on the bottom is efficient. You have a positive pressure inlet and discharge to a low pressure region. The vast majority of airplanes designed for high speed cruise are this configuration. You can discharge to the top surface, but is needs to be not too far back toward the canopy. I picked alpha=6 to give you since that is a reasonable climb angle. The high pressure region has moved down on the underside like you expect and the higher velocity airflow across the upper surface in creating a low pressure region. For this case, you can make an efficient cooling system for the climb condition.<< -------------------------------- The discontinuities in the curves above are the result of discontinuities in my CAD file. The real thing is smoother, I hope. If I do this again, I'll make sure the curves are actually tangent, not just TLAR ("that looks about right"). The high pressure at the spinner is due to the inlet being blocked off entirely. This also looks like a handy tool to determine where the high and low pressure areas along the side of the KR are, so when I get a chance I'll digitize a top view and let him run it through the same process. That should give us a good idea of where to put those NACA inlets for cabin cooling purposes, but from the images above, I'd say it'd be hard to beat the base of the windshield, if you want a real blast! This also goes to show you hard it to seal a the base of a hinged canopy from air and rain while flying. Phillip Matheson sent me a photo of Aub's Australian KR that is already flying with updraft cooling (see http://home.hiwaay.net/~langford/updraft_KR.jpg ). The outlets are pretty far forward on the cowling, which matches the data in the pressure distribution images. I talked to Troy the other night, and he is commited to the updraft system, even though it will require an entirely different cowling. If all goes well, you'll get to see it at the KR Gathering... Mark Langford, Huntsville, AL mailto:langford@hiwaay.net see KR2S project at http://home.hiwaay.net/~langford ------------------------------ Date: Mon, 5 Aug 2002 05:31:46 -0500 To: "'krnet@mailinglists.org'" From: "van Rooyen, Hennie(SF02)" Subject: FW: KR2 heavier engine support idea > -----Original Message----- > From: van Rooyen, Hennie(SF02) > Sent: Friday, August 02, 2002 4:45 AM > To: 'krnet@mailinglists.org' > Subject: KR2 heavier engine support idea > > Hi all, > > I had the following idea - If it's been suggested before, I apologise as > I'm unaware of it. > > If you are planning to use one of the heavier engines for your KR, might > it not be an good idea to run a tube from the front of the forward spar > along the fuselage on each side to the back of your top wirewall engine > mount? I'm convinced that it will provide added strenght under high > positive g manouvers. > > I am NOT suggesting that the existing attach method does not do the job > properly, but doing it this way will certainly make me feel safer without > a significant weight penalty. Just an idea though if I may express it > here... > > Regards, > Hennie ------------------------------ Date: Mon, 5 Aug 2002 05:27:30 -0500 To: "'krnet@mailinglists.org'" From: "van Rooyen, Hennie(SF02)" Subject: The AS5046 airfoil Hi Larry, 1. "From where will you get the *other* 8hp? A 503 is only good for 52, isn't it?" No Larry, actually 53. By removing the fan and force cooling air from the prop intake like any other aircraft. I've done it before, it works! I'll also fit bigger carbs and install tune pipes (long ones) under the belly. The biggest Hp limitation on a two stroke is the same as any other engine - HEAT. By forcing air through the engine by much higher than the normal 40mph microlight speed, would cause it to run cooler and it should easily cope with only another 8Hp! 2. "And at cruise, closer to 39-40?" Now Larry, how can you make a statement like this? Please look at your specs for the first KR2 with 60Hp. 60Hp is 60Hp, no matter where it comes from. Plus mine will be lighter, less angle of attack in flight will cause less drag and using a superior airfoil...I'm sorry, this statement makes no sense to me at all...Why would my engine deliver any less Hp in cruise than a VW without a turbo. Then the VW also produces 39-40 Hp in cruise and it works fine for a light weight KR, so it should work fine for me also. 3."Hmmm... I'm guessing these are thirsty... 180hp 2stroke? yup, probably pretty thirsty." A two stroke is thirsty by nature - however, in all my microlight flying the results using 25litres of fuel: a. One up - 2 hours b. Two up - 1,5 hours. This does not compare too bad with the VW's figures. I have no idea what the Arrow engine will consume, but then I take it for granted that the Corvair also uses a lot more than the VW. Speed comes with a price tag! 4. "Uhm... an F-16 AND a C-150 demonstrate significant differences with 2up/full Fuel conditions, yet yours will not?? This will be interesting." Larry, I'm talking about the cg problems that most KR2 flyers are experiencing. I've read a few posts even here where it was stated that the KR2 couldn't be trimmed for level flight flying solo. The cg change has been the biggest complaint on the KR2 over all these years, even more so than the sensitive elevator! I've saolved that on my aircraft. 5. "Yes, wonder why that fuse tapers? Hmmm. wonder why EVERY tailcone isn't Square at the bottom? Hmmm.. wonder why each and every >200mph plane out there has a rounded tailcone... hmmmm.... oh, except the Mustang2/Thorp t-18, 200hp/200mph... you might wanna check into some aero studies on wing root fairing and fuselage boundary layer." Larry, you'll not gain more than 3mph or so from this effect. And then just about everyone is willing to throw away that 3mph by widening the fuselage for marginal increase in comfort only. You should come and sit in mine - I promise you'll change your mind on the spot! So, I may loose 6mph or so, which the new airfoil plus slight upwards full span flaps will give back to me. 6. "Though inspection is easier... wonder why EVERY high performance plane doesn't use tubes?? Check into flutter failure modes... Re-examine your item" Now Larry, how can a balanced surface attached to a tube with no cable or any other slack be more prone to flutter? Honest, I'm not trying to be nasty here, but this does not make too much sense. Not that I expect to reach 200 mph with my initial engine installation, but it's nice to know I'm safe for later power upgrades. 7. "Pilatus-type split flaps (which have holes in them, BTW) are little more than air brakes. They produce very little in the way of useful low speed lift and are considered inefficient for the complexity. Drag=Lift. The trick is to get Lift in a unified and useful direction. Hence, flaps. There is a very big difference between decreasing lift and decreasing stall speed." No comment - I saw a sketch that shows the layout I've mentioned and it seems like a nice way to go for me. I don't want too much drag by deploying the first part of the flap range, as I want to use it for take-offs also. On all production aircraft (or almost all) the normal thing is to use one notch of flaps for take-off, thus flaps must be able to generate lift without too much drag during the first few degrees of travel. 8. "You might remember you're going from about 3#/sq.ft. wing loading to around 6 or more. Unless, with your longer wings, you're increasing the wing area, then your ride gets worse and your handling more microlight-like. "Coming down like a parachute" is no accommplishment -- 'landing like a rocking chair' IS. " Larry, if you were with me in my emergency landings in microlights, you would have understood better. By using spoilers, I can choose a landing spot and put it down there for sure without overshooting. I once landed with a hanglider pilot on my passenger seat in a mountain with lots of boulders and other obstacles. I put it down without bending a tube. Was it not for the spoilers, I would have been dead. 9."[U]nsure or the strength of this arrangement"?? "So I built new spars"?? Uhhh.... this has the 'kindergarteners with handguns' sort of feel to it, sorry. Learn to run the numbers. Learn what they mean. KNOW what your vehicle's engineered limits (all of them) are. Are you setting up a stress riser? Do you know what that is? Before you "design" anything, you might want to brush up a bit on some of these lessons (learned the hard way throughout history). Just a though " Larry, my post reads that I've slightly INCREASED the dimensions on all my wooden parts. Plus, using a GAW-1 airfoil would allow for quite a thick (deep)spar. As you know the strenght of the spar goes up with the square of the height, so I KNOW I'm safe in all I did. Nobody (as to my knowledge) beafed up the longeron sizes by stretching the fuselage to the KR2S or even accepting the bigger engines. I know that there is a SLIGHT alteration on the wood structure behind the firewall, but nothing major. Also, builders are increasing the standard wing lenght by up to four feet without spars or beefing up the existing spars! And that with those heavy engines. I'm sure I'm safe in whatever I've done. Look at the lenght of the KR1B wing! I'm not even going close to that but more than likely 24 ft or so as that's the lenght of my current spars. I honestly see no kindergarten stuff here... 10. "otsa ruck :-) Let us know how it goes and if we can help." Larry, I dunno if "otsa ruck" means lots of luck - if it does then thank you very much for the help offered! I see radical changes being made to most KR's on the net. Just as Mark Langford expressed his idea of a more successful version of the KR (and I'm sure Mark will achieve EVERY single thing that he's after), so am I also entitled to my opinion of "experimenting" with this design? You are welcome to reject my ideas just as much as I thought that I was welcome to share them here. I've seen turbine powered Kr's, Continental powered KR's - none of these were EVER planned or allowed for by Ken Rand, yet people with initiative did it and now it's a common thing. So it's O.k. to keep on increasing the empty weight of this aircraft against the designer's intention. I'm going the opposite way, back to the original empty designed weight (might even be less) and I'm being doubted doing so. I'm sure Ken would be pleased if this all works out as his main idea was to keep it as light and simple as possible. Regards, Hennie ------------------------------ Date: Mon, 5 Aug 2002 05:34:50 -0500 To: "'krnet@mailinglists.org'" From: "van Rooyen, Hennie(SF02)" Subject: FW: Suggestion for a wing fold mechanism > -----Original Message----- > From: van Rooyen, Hennie(SF02) > Sent: Friday, August 02, 2002 7:30 AM > To: 'krnet@mailinglists.org' > Subject: Suggestion for a wing fold mechanism > > Hi all, > > Here's my idea for a wing fold mechanism for the KR series. I hope it is > understandable as this is the best I could do with text only. > > Step 1. Make the bracket below and fasten over the existing inboard > forward spar wing attach brakets. Use the same bolts if you can. > This bracket and hole wil protrude out of the top section of > the wing. Not to worry, you'll fair this nicely with a small teardrop > shape > using foam and resin. > > ADD THIS BRACKET OVER THE EXISTING BRAKETS, ON BOTH SIDES OF > THE FWD SPAR CAP > I > I > V > _ > _ _ > _ 0 _ WING FOLD_UP HINGE POINT, FWD SPAR ONLY > - NOT USED AS AN ATTACH FITTING! > I I > -------------------I---------------I-----------I > -------------------I---------------I-----------I----------- > I I I I > I I I 0 I TOP WAF > I I I I > -------------------I---------------I-----------I----------- > I I I > WING FRONT SPAR TOP I (INNER SPAR) > I I I > I I I > I I I > -------------------I---------------I-----------I----------- > I I I I > I I I 0 I BOTTOM > WAF > I I I I > -------------------I---------------I-----------I----------- > WING FRONT SPAR BOTTOM I > ----------------------------------------------- > > > Step 2. Make this L shaped bracket below and fasten over the existing > outboard forward spar top wing attach brakets. Use the same bolts if you > can. > Make sure to dril a hole in line with the existing wing attach > bolt as this is stil used to fasten the wing. > > > > ADD THIS BRACKET OVER THE EXISTING TOP OUTER SPAR TOP WAF ON BOTH SIDES > > _ > _ _ > _ 0 _ > I I > -------------------------------------------------------------------------- > ----- > I I > I EXISTING OUTER FWD SPAR TOP WAF > I > I------------------------------------------------------------------------- > ----------- > I I > I > I I 0 MAKE > SURE OF NEW HOLE I OVER AND IN LINE WITH EXISTING HOLE FOR NORMAL > ATTACH BOLT > I I > I > > I------------------------------------------------------------------------- > --------------------------- > > I > > I OUTER WING FRONT SPAR TOP I > > I > > I > > I > > ---------------------------------------------------------- > I > I > I 0 > I BOTTOM WAF > I > I > > ---------------------------------------------------------- > > I > > ----------------------------------------------- > > > > Step 3. Now alling everything and put bolts through the normal attach > holes. > > Step 4. Now permanently put bolts through the brackets on both sides of > the spar cap protruding through the top of the wing. > Do not tighten too much as this is going to be your permanent > hinge > > Step 5. Now make a teardrob shaped permanent fairing around the stuff > sticking out the top of the wing. > > When ready to use, simply loosen all eight wing attach bolts and swing the > wing up and against the canopy using the swivel point sticking > through the top of the wing. Viola, no more painful wing detach and > asssembly efferts. > > > > I hope you understand the above. > > Regards, > Hennie > > > ------------------------------ Date: Mon, 5 Aug 2002 08:06:50 -0500 To: Alex Swavely , krnet@mailinglists.org From: "van Rooyen, Hennie(SF02)" Subject: RE: KR> re design of kr---Hennie van Rooyen Hi Alex, Thanks for the first decent reply in days on this subject. Yes, I clearly stated that I do not expect to have the same cg shift problems that others do. I reply to all as my post do not seem to apear on this forumn and this way at least you will receive it. Regards, Hennie -----Original Message----- From: Alex Swavely [mailto:kr@swavely.net] Sent: Friday, August 02, 2002 2:25 AM To: krnet@mailinglists.org Subject: Re: KR> re design of kr---Hennie van Rooyen On Thu, 1 Aug 2002, M&C wrote: > With this in mind I've never flown an aircraft that performed the same > with two people as it does with only one person aboard with no fuel or > full of fuel. I am going to play Devil's Advocate here and state that I believe Hennie was most likely referring to avoiding an adverse (toward the rear of the envelope) CG shift when loaded at max by placing as much of the variable load upon the designed CG. --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , NOT "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp or http://www.bouyea.net/ for the Word files ------------------------------ Date: Mon, 5 Aug 2002 07:47:39 -0500 To: M&C , krnet@mailinglists.org From: "van Rooyen, Hennie(SF02)" Subject: RE: KR> re design of kr---Hennie van Rooyen Hi Mike, I use reply to all as none of my post apprear here since Friday morning. Cloudsuck is a term most used by hanglider pilots and describes what happers if a very light aircraft flies too close to a cloud base. The strong upwards rising air current in the cloud then literaly "sucks" you into the cloud and if it is a cumilus cloud, chances are you'll end up at 40 000ft as they've discovered doing a ortopsy on hanglider pilot's bodies after such incidents. Yes, I'm purely referring to cg shift as is quite clear in my post. "so I'll have no loading cg problems like most do" I think it is quite clear what I meant to say... Regards, Hennie -----Original Message----- From: M&C [mailto:aviator@brick.net] Sent: Friday, August 02, 2002 1:13 AM To: krnet@mailinglists.org Subject: KR> re design of kr---Hennie van Rooyen HENNIE, I was reading about your redesign of the KR2 and how you could kill the lift by the use of spoilers. You mentioned in redesign no. 16 that it got you out of a "cloud suck". I've never heard it put that way before. Could you explain this phenomenon or is this a term common to microlights? I must admit I've never flown any sort of microlight but I have been flying aircraft for over 35 years. With this in mind I've never flown an aircraft that performed the same with two people as it does with only one person aboard with no fuel or full of fuel. I'm stumped and I'm from Missouri-- you know, "The show me state" !!!!!!!!!! Mike Turner --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , NOT "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp or http://www.bouyea.net/ for the Word files ------------------------------ Date: Mon, 5 Aug 2002 08:02:03 -0500 To: Ronald Freiberger , Rick Wilson , KRNET@MAILINGLISTS.ORG From: "van Rooyen, Hennie(SF02)" Subject: RE: KR> designing airplanes Hi Ronald, Yes, indeed I intend to rename it. If you see the photo, you'll not even reckognize the KR in it exept for the type of construction. I've been involved with the KR's in the following ways: 1. I purchased a partially completed KR2 in the beginning 90's. This is what got your Danny Livingstone building as he was inspired by my project. Just before it was finished and after starting high speed taxi tests, I had to relocate for my work to a construction site where I could no longer build, let alone store my aircraft somewhere. So I swopped it for a 2 seater microlight with instruments and BRS system and this was a good deal for me as I ended up logging 320 hours in that aircraft. 2. I later puchased a KR1, redesigned the whole canopy and cowling. 3. I later swopped my racing boat for two KR2's. one with a Continental 100hp engine with slight damages and another partially completed one with a 4 cylinder Porche engine. I am not a newbie to KR's, so regardless of all your opinions, I'n not stupid as eveyone tries to suggest. There was an agent in South Africa for the KR2. He always used to reprimand me for modifying my KR's. Today he's buried, I'm still here... I was exited on discovering this forumn. After building for so long on my own, the prospects of sharing all of this with others who I though has the same passion for experimental aircraft as I do. WHAT A MISTAKE THAT TURNED OUT TO BE. If I increased the empty weight to 1200 lbs with the same airframe and a V8 Catipillar engine, I would more thasn likely received a warm welcome here. Sorry guys, I'm fananatic for moving back towards the designede empty weight and hp requirements and risk loosing my life because of it??? Regards, Hennie -----Original Message----- From: Ronald Freiberger [mailto:ron.martha@mindspring.com] Sent: Friday, August 02, 2002 12:13 AM To: Rick Wilson; KRNET@MAILINGLISTS.ORG Subject: RE: KR> designing airplanes Maybe he could call it a Heinie 1. That's why I named my first plane a RON'S 1. Some say all homebuilts ought to have unique names. Only Virg is building to plans. Ron Freiberger... mailto:ron.martha@mindspring.com -----Original Message----- From: Rick Wilson [mailto:rwdw2002@yahoo.com] Sent: Thursday, August 01, 2002 6:46 PM To: KRNET@MAILINGLISTS.ORG Subject: KR> designing airplanes Hennie, If you do decide to design and build an airplane please do all of us kr owners a favor and refer to it as something other than a kr, after all, with all the changes you speak of it will bear little resemblance to a kr. When statistics are compiled at least it won't be listed as a kr "incident". Thanks and good luck, Rick Wilson. KR2-0200 rwdw2002@yahoo.com __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , NOT "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp or http://www.bouyea.net/ for the Word files --------------------------------------------------------------------- To post to the list, email: krnet@mailinglists.org , NOT "reply all" To UNsubscribe, e-mail: krnet-unsubscribe@mailinglists.org For additional commands, e-mail: krnet-help@mailinglists.org See the KRNet archives at http://www.maddyhome.com/krsrch/index.jsp or http://www.bouyea.net/ for the Word files ------------------------------ End of krnet Digest ***********************************