From: owner-krnet-l-digest@teleport.com[SMTP:owner-krnet-l-digest@teleport.com] Sent: Thursday, January 22, 1998 2:41 AM To: krnet-l-digest@teleport.com Subject: krnet-l-digest V2 #21 krnet-l-digest Thursday, January 22 1998 Volume 02 : Number 021 ---------------------------------------------------------------------- Date: Wed, 21 Jan 1998 07:04:13 -0800 From: Tom Crawford Subject: KR: Stalls Something I thought I would share with everyone. Most people say that when it comes to Experimental airplanes, there are "builders" and there are "flyers." Well, while I was building my KR2, I began to suspect that I was a "builder" because I enjoyed building it so much. I almost suspected that when I finished building it, I might be tempted to start building something else right away. I was wrong. I LOVE flying this airplane. I am afraid that all the other projects I have been thinking about are gonna have to wait a while. Maybe a long while. Just a couple flight testing notes- I added unfiltered ram air\ filtered carb heat to the plane at the same time I installed the wheelpants. On the next flight, I noted that my top speed had increased by 30 MPH. WOO HOO! I suspect that most of it came from the extra air. EGT's had been a little cool, but now are about right on. On stalls- I find that my power off stall is a real non-event. At about 48 MPH indicated, I begin to suspect a stall. I wouldn't call it a buffet, but the plane really starts to mush and the ROD is about 500 FPM as previously noted in another post. Ailerons are still effective at this point. I have taken it down to 45 MPH indicated without any "stall." At this point I decided this is as slow as I would like to fly for now, and will explore it further at a later date. Tom Crawford tomc@afn.org Gainesville, FL N262TC ------------------------------ Date: Wed, 21 Jan 1998 04:26:12 -0800 From: enewbold@sprynet.com Subject: Re: KR: Huntsville Gathering - Which local airport? As time draws nearer for the Huntsville Gathering, I need to finalize my flight plans. Which of the airports did you say to fly into? Was it M35? Thanks. Ed Newbold, enewbold@sprynet.com Columbus, OH ------------------------------ Date: Wed, 21 Jan 1998 08:02:40 EST From: KMcken7414 Subject: Re: KR: MS Flight Simulator Mike, On FS5, there is a pull down window, where you can make an experimental aircraft. All you have to do is put in the #'s ie wing span, tail area, etc. The only draw back is that it is only for high wing ac. Keith ------------------------------ Date: Wed, 21 Jan 1998 07:36:02 -0600 (CST) From: Steven A Eberhart Subject: Re: KR: MS Flight Simulator On Wed, 21 Jan 1998, KMcken7414 wrote: > Mike, > On FS5, there is a pull down window, where you can make an experimental > aircraft. > All you have to do is put in the #'s ie wing span, tail area, etc. The only > draw back is that it is only for high wing ac. > > Keith > A couple years back one of the contributors on the Europa mail list put together a Europa type for Microsoft Flight Simulator. It required an add on software package for FS but had performance very similar to the Europa. If I get some time I will dig back through the Europa- archives and try to find who it was. They actually did a solid model of the Europa so it not only flew like the Europa but looked like one also. Steve Eberhart newtech@newtech.com ------------------------------ Date: Wed, 21 Jan 1998 06:22:11 PST From: "Oscar Zuniga" Subject: KR: Stalls/Flite testing Two Tango-Charlie wrote: >Just a couple flight testing notes- > >I added unfiltered ram air\ filtered carb heat to the plane at the >same time I installed the wheelpants. On the next flight, I noted >that my top speed had increased by 30 MPH. WOO HOO! Now that is a worthwhile improvement! How did you do the ram air? Do you have a manual bypass "manifold pressure boost" a la Mooney, or is the ram air now on all the time? The Mooney setup is great because you run filtered air during ground ops, climb, descent, then use the ram air at cruise. Just be sure to put that on your checklists for cruise and descent. BTW-my brother had a M20E, and flew it down in Texas during the time there was a volcano eruption in Mexico. There was enough ash in the air that the engine gulped some when he was running the ram bypass. Not good. >On stalls- This is the kind of thing I like to hear about. I know that no two fly alike, but there have to be similarities in the breed, and it's good to hear how the thing handles. Thanks for the pirep on the flight testing. Now if you get tired of flying it in the pattern, just call for a relief pilot on the Net! Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Wed, 21 Jan 1998 06:33:58 PST From: "Oscar Zuniga" Subject: KR: EA81 Engine/cowling Douglas wrote: >Does anyone have any information or suggestions for engine mounting the >EA81 engine? > >Also can the standard KR2 cowling be used or adapted to fit over the >EA81 engine? > Hi, Douglas I'm planning the EA-81 in the KR-2S, but haven't found a pre-designed ready to use mount. Ross Aero says that they have built up one of these combos, but they are one-offs; they don't stock anything. Stratus can make one, or may have one, which uses the "bed type" mounts under the heads, bolting to a conventional 4-point mount like you would use for other engines. The problem is that you don't want the heavier EA-81 hanging out as far as a lighter engine would, so you need to keep it close to the firewall if possible. That almost means a custom mount. The short answer is, if you can weld or know somebody who can, you'll probably need to make your own. I've heard that the Soob can be mounted with the prop shaft centerline right on the 'stock' centerline (top of longerons); that's with a PSRU. I don't know where the thrust line should be with the direct-drive setup. [Mims- have you looked at this for the direct drive turbo?] Regarding the cowling- I am trying to do some 3-views on AutoCAD with this setup, but don't have any accurate cowling dimensions. I may go over to Paul Martin's and measure his cowling (Rand-Robinson premold) so I can draw it up in CAD and monkey with it. If so, I'll post here and make the .DWG available to anybody who's interested. Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Wed, 21 Jan 1998 06:44:08 PST From: "Oscar Zuniga" Subject: KR: Taylor heritage of KR MikeT wrote: >Looks like the various sizes stayed almost the same, but the gross weight went >up substantially. Is there any evidence from the plans that the fuselage and >spar were beefed up to warrant this increase in gross? > I'll post my findings when I get a chance to study it. Too busy reading my EAA "Wood" book that I got! That, together with getting this month's Sport Aviation and Experimenter, and my new subscription to Contact!, keeps my every minute in the library very busy. Oscar Zuniga Medford, Oregon ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ------------------------------ Date: Wed, 21 Jan 1998 06:49:48 -0800 From: Micheal Mims Subject: Re: KR: Shoulder Harness Mod from R-R At 10:47 PM 1/20/98 EST, you wrote: >I know many people here do not subscribe to the KRNewsletter, (which is much improved, by the way), so I'm summarizing this month's big story:>>>> Mike thanks for posting this! I will ask Janette if I can scan it and post it on the site! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Oh My,.......Its 1998!! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Wed, 21 Jan 1998 06:54:47 -0800 From: Micheal Mims Subject: Re: KR: Stalls At 07:04 AM 1/21/98 -0800, you wrote: I have taken it down to 45 MPH indicated without any >"stall." At this point I decided this is as slow as I would like to fly >for now, and will explore it further at a later date. > >Tom Crawford Tom good job and thanks for posting! This is excellent stuff and that extra 30 mph had to be worth a beer or two at the end of the day eh! :o) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Oh My,.......Its 1998!! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Wed, 21 Jan 1998 07:02:12 -0800 From: Micheal Mims Subject: Re: KR: EA81 Engine/cowling At 06:33 AM 1/21/98 PST, you wrote: I don't know where the thrust line >should be with the direct-drive setup. [Mims- have you looked at this >for the direct drive turbo?] > Well the EA81 looks like it is very close to the size of a VW so I don't see any reason you couldn't use the stock cowling. Thrust line in the same place as the VW should work out also. If you plan to use a reduction then I have no idea and I think you could be wasting your money! :o) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Oh My,.......Its 1998!! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Wed, 21 Jan 1998 07:22:43 -0800 From: Douglas Dorfmeier Subject: Re: KR: EA81 Engine/cowling Micheal Mims wrote: > > At 06:33 AM 1/21/98 PST, you wrote: > I don't know where the thrust line > >should be with the direct-drive setup. [Mims- have you looked at this > >for the direct drive turbo?] > > > > Well the EA81 looks like it is very close to the size of a VW so I don't see > any reason you couldn't use the stock cowling. Thrust line in the same > place as the VW should work out also. If you plan to use a reduction then I > have no idea and I think you could be wasting your money! :o) > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Micheal Mims > Oh My,.......Its 1998!! > > mailto:mikemims@pacbell.net > http://home.pacbell.net/mikemims The Stratus EA81 comes with a 2.2:1 reduction drive that moves the prop drive to the top of engine. From looking at the picture I received from Stratus, I would say it is about 10 to 12 inches higher than a direct drive. I will ask Reiner to let me know just how much higher it really is. ------------------------------ Date: Wed, 21 Jan 1998 10:02:45 -0800 From: David Moore Subject: Re: KR: EA81 Engine/cowling If you check with RR, There is a builder in Fla. that pulled a VW out (broken crank) and installed a Soob with very little change in the cowl. From the article I read he is very happy with the Soob. Dave Moore At 07:02 AM 1/21/98 -0800, you wrote: >At 06:33 AM 1/21/98 PST, you wrote: > I don't know where the thrust line >>should be with the direct-drive setup. [Mims- have you looked at this >>for the direct drive turbo?] >> > >Well the EA81 looks like it is very close to the size of a VW so I don't see >any reason you couldn't use the stock cowling. Thrust line in the same >place as the VW should work out also. If you plan to use a reduction then I >have no idea and I think you could be wasting your money! :o) >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >Micheal Mims >Oh My,.......Its 1998!! > >mailto:mikemims@pacbell.net >http://home.pacbell.net/mikemims > > > David Moore Turnkey1@MSComm.Com Hesperia, Calif. ------------------------------ Date: Wed, 21 Jan 1998 17:16:46 -0800 From: wolfpacks@juno.com (Linda & Paul Martin) Subject: KR: Progress report I fired up the engine on Jan. 2nd. It's good to hear the KR come to life after 2 years of silence. It was louder than I expected due to some short exhaust pipes (I'm still re-routing them around the new nose gear) and the starting fluid I shot into the carb. Made a note to wear ear plugs next time. Next comes some glass work around the new main gear and a little panel wiring. It's been up around 28 degrees (F) in the garage lately so I'll get to use the heater for a change. Threading small nuts is hard with ski gloves on. Paul M. Ashland, OR ------------------------------ Date: Wed, 21 Jan 1998 17:19:26 -0800 From: wolfpacks@juno.com (Linda & Paul Martin) Subject: KR: Oregon EAA Fly-in/Air Fair KR flyers/builders are invited to Medford, Oregon, June 5,6,&7th for the State EAA gathering. Several local members are Oshkosh, Sun & Fun, etc. major award winners and will be there including the T-38 boys, Express, Lanceair, Kitfox... groups. Even the Cherokee, Cessna, etc. owners clubs are being invited ;-). Looks like over 100 planes so far. Oscar may be there too (they might allow bonfires). I'd guess Ross will have his 40 hrs. flown off by then and be able to attend, right Ross? Camping, barbecue, breakfasts, free food for those flying in, free admittance and parking for everyone. I hope some other KR's will be there besides mine, there are several in our area. I can house a few KR folks/overnighters here. Should we make this into a Northwest KR gathering? Oh no, did I just volunteer for something? Paul M. Ashland, OR ------------------------------ Date: Wed, 21 Jan 1998 21:14:13 EST From: leperkins@juno.com (Lloyd Perkins,Jr.) Subject: KR: FLIGHT TRAINING Hello All , I am interested in providing flight training in my KR-2 here in Va.... At one time someone was working on a flight training sylabis for the KR-2 .. Did it get finished???? I am A Certified Flght Insructor and an A/P. All those interested should contact me and let me know . I think 35.00 per hour for me and the Airplane is resonable... Dont you agree?? Thanks, Lloyd E-MAIL LEPERKINS@JUNO.COM ------------------------------ Date: Wed, 21 Jan 1998 21:14:13 EST From: leperkins@juno.com (Lloyd Perkins,Jr.) Subject: Re: KR: NEED SPECS Thanks Ron, It is flyable but it has been sitting for two years. It was finished by Max Caulkin. (whoever he is.) I am going to disassmble the acft and put it in my garage and go through it myself. The acft comes from NC. Do you know the lengths of wing panels?? and the distance between the wheels??? Is there a set of plans for a trailer for the KR-2. Thanks, LLoyd On Tue, 20 Jan 1998 19:47:31 -0700 Ron Lee writes: >At 09:25 PM 1/20/98 EST, you wrote: >>Hello All ,. >> I need the lenghs of the wing panels on a KR-2 and the distance >between >>the wheels..... I have bought a KR and need to transport it . What >kind >>of trailer is everyone else using??? >>Thanks >>LLoyd >> >Great Lloyd!!! Where did you get it and it is flyable or a project? > >Ron Lee > ------------------------------ Date: Wed, 21 Jan 1998 18:48:16 -0800 From: Micheal Mims Subject: Re: KR: NEED SPECS At 09:14 PM 1/21/98 EST, you wrote: Do you know the lengths of wing panels?? and the distance between the wheels??? >>>> Well you have some good questions but there are so many variables, does it have the retracts or fixed gear? If fixed is it Dan Diehl gear or scratch built? Are the wings scratch built or are they from Dan also. The answers to your questions all depend on what gear, what wings and who knows how many other variables. The phrase "No two Homebuilt Airplanes are alike" is VERY applicable to the KR series. If you have the retracts I guess your wheels would be about 5 to 6 feet apart, if the wings are scratch built they (the outer panels) would be about 6.5 feet long. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Micheal Mims Oh My,.......Its 1998!! mailto:mikemims@pacbell.net http://home.pacbell.net/mikemims ------------------------------ Date: Wed, 21 Jan 1998 19:13:10 -0800 From: Douglas Dorfmeier Subject: Re: KR: EA81 Engine/cowling Douglas Dorfmeier wrote: > > Micheal Mims wrote: > > > > At 06:33 AM 1/21/98 PST, you wrote: > > I don't know where the thrust line > > >should be with the direct-drive setup. [Mims- have you looked at this > > >for the direct drive turbo?] > > > > > > > Well the EA81 looks like it is very close to the size of a VW so I don't see > > any reason you couldn't use the stock cowling. Thrust line in the same > > place as the VW should work out also. If you plan to use a reduction then I > > have no idea and I think you could be wasting your money! :o) > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Micheal Mims > > Oh My,.......Its 1998!! > > > > mailto:mikemims@pacbell.net > > http://home.pacbell.net/mikemims > The Stratus EA81 comes with a 2.2:1 reduction drive that moves the prop > drive to > the top of engine. From looking at the picture I received from Stratus, > I would say it is about 10 to 12 inches higher than a direct drive. I > will ask Reiner to let me > know just how much higher it really is. I talked to Reiner at Stratus today and he told me that the @.2:1 reduction drive he uses places the prop drive at the right height for the standard KR2 cowling. However, the bottom half will need to be expanded slightly to accomodate the oil pan with an he describes as being like a shark's mouth to allow ample air flow past the oil pan. ------------------------------ Date: Wed, 21 Jan 1998 21:05:22 -0600 From: "Mark Langford" Subject: KR: Huntsville directions Huntsville Gathering III fans, I put a map to my house from Huntsville on my site at http://fly.hiwaay.net/~langford/map.gif . I learned after I scribbled it out that if you're coming from the North on I-65, the exit number may be 1 (instead of 2), at the big green sign that says Huntsville and Ardmore, and it may mention Tennessee state road 7, as well. If anybody has trouble printing that out, I'll send real directions, but the map should get you here. The airport of choice would be M82, otherwise known as Madison County Executive, whatever that means. It was just plain North Huntsville when I did my training there. Phone number is 205-851-9902, or 205-683-7895 (cellular, near airport excursion time). It appears as though the weather just might cooperate after all for the flying KRNetHeads. I'll just stay at the house until somebody calls, then I'll come pick you up. You can scope out Lionheart while you wait on me. It's in the only hangar there. And it looks like we're up to 12 folks headed this way, 5% of KRNet! Anybody else is welcome. Just bring beer. I'll need something to help you forget all of the scary things you see before you can remember to report me to other KRNetters. Enter at the basement door. Anybody who's going to stay a little while should see the Space and Rocket Museum (205-837-3400) if at all possible. It's plum full of good stuff. If you look at my map and you're travelling East on I-65, it's the next exit after Rideout Road. See ya Saturday, Mark Langford, Huntsville, AL email at langford@hiwaay.net KR2S project construction at http://fly.hiwaay.net/~langford ------------------------------ Date: Wed, 21 Jan 1998 21:53:55 -0600 From: "Mark Langford" Subject: Re: KR: Taylor heritage of KR MikeT nyc wrote: > Looks like the various sizes stayed almost the same, but the gross weight went > up substantially. Is there any evidence from the plans that the fuselage and > spar were beefed up to warrant this increase in gross? Stu told me that Ken had a buddy at work design the spar using finite analysis. That might help explain some of the spacing of the verticals and their dimensions. If true, I'd say they were beefed up, but it would be interesting to see what the Monoplane spar looks like. I asked a pretty sharp stress analyst at work to figure the load carrying capacity and all he could think of was Patran, but then he does shuttle stuff, not wood... Mark Langford, Huntsville, AL email at langford@hiwaay.net KR2S project construction at http://fly.hiwaay.net/~langford ------------------------------ Date: Wed, 21 Jan 1998 19:25:41 -0800 From: Douglas Dorfmeier Subject: KR: Ivoprop Our member in South Africa had said that he was using an inflight adjustable prop that he said cost about $7,000US. It appears that the Ivoprop I had looked at is a different animal. Unless you go with their Magnum model which doesn't come in the size to fit a KR, they do not have a prop that will work for the KR. The inflight adjustable prop that is available in the size range usable for the KR is designed for aircraft with a top speed of less the 100mph according to the company. I would like to hear from our South African friend about how he mounted his engine which I believe, from talking to Reiner, is the Stratus EA81 and how he adapted his cowling to fit. I didn't save his email address, but it may well be that there is enough interest in EA81 installs that this could be of general interest. ------------------------------ Date: Wed, 21 Jan 1998 20:26:22 -0800 From: Peter Hudson Subject: Re: KR: Spins Hi gang, That was me. I built a scale KR-2 and could flat spin it at will. It was unrecoverable but with a slow enough decent rate to prevent damage on impact. This should not be taken to suggest the full sized KR-2 would act the same. At the last discussion there were a number of pilots who spin their KRs regularly. I attribute the model behavior to scale effects. (any scale modeller will tell you you need to increase the tail volume for dynamically similar flight characteristics.) I intend to stall and spin mine when it's done (in a progressive manor) as well as a few loops and rolls etc. (not at gross weight) - -Peter Hudson- I forget who wrote: << I think that Rick Junkin did some playing with a scale model, and > found that it would flat spin easily. There were also some anticdotal > discussions on this about a year ago. >> Rick wrote: > Nope, wasn't me. I haven't put anything about spins in my test plan yet > because I'm not going to recommend it until after I spin mine. ------------------------------ Date: Wed, 21 Jan 1998 20:44:45 -0800 From: "John F. Esch" Subject: Re: KR: Oregon EAA Fly-in/Air Fair Let me know as the date gets closer (I tend to forget). I will drive down in my camper or borrow an 150 and fly down. John F. Esch Salem, OR KR-2S http://www.cyberis.net/~sesch Linda & Paul Martin wrote: > KR flyers/builders are invited to Medford, Oregon, June 5,6,&7th for > the > State EAA gathering. > > Several local members are Oshkosh, Sun & Fun, etc. major award winners > > and will be there including the T-38 boys, Express, Lanceair, > Kitfox... > groups. Even the Cherokee, Cessna, etc. owners clubs are being > invited > ;-). Looks like over 100 planes so far. Oscar may be there too (they > > might allow bonfires). I'd guess Ross will have his 40 hrs. flown off > by > then and be able to attend, right Ross? > > Camping, barbecue, breakfasts, free food for those flying in, free > admittance and parking for everyone. > > I hope some other KR's will be there besides mine, there are several > in > our area. I can house a few KR folks/overnighters here. Should we > make > this into a Northwest KR gathering? > > Oh no, did I just volunteer for something? > > Paul M. > Ashland, OR ------------------------------ Date: Wed, 21 Jan 1998 23:34:02 EST From: Horn2004 Subject: Re: Re: KR: NEED SPECS =0AIn a message dated 1/21/98 8:29:54 PM, you wrote:=0A=0A<>=0A=0ADon=92t know the man personally, but I believe h= e was a well respected KR=0Abuilder in the 1980s. His KR was featured in = several newsletters. Maybe some=0Aof the folks (Steve Bennett, Adrian Car= tera, E. Koppe) might be able to give=0Ayou more info. on the man or his = KR.=0A=0ASteve Horn=0Ahorn2004@aol.com=0ADallas, Tejas=0A ------------------------------ Date: Thu, 22 Jan 98 7:15:10 ÿÿÿ From: steveb@aviation.denel.co.za Subject: KR: MLG Position?? Hi KRNetters Rego, through Mark, asked for the main wheel axle position from the forward face of the main spar. Marvin said that his were 6and 1/2" behind the front of the main spar. I have been giving this some real serious thought and I still have a number of unanswered questions. Maybe somebody can set me right here. The manual (if correct) recommends operating the CG between 8" and 16" aft of the root leading edge. Personally I prefer 30% chord which is 14" aft of the LE. With a tricycle configuration, the main wheels should be behind the aft CG when the aircraft is pitched at (angle of attack related to 0.9Cl) plus 3 degrees. Ref The Design of the Aeroplane by Darrol Stinton. From various data sources on the RAF48 wing, lets call this angle 15 degrees. If I were to assume the CG to be 3" above the top of the main spar and the vertical height from the CG posn to the axle is 24.5". Furthermore a prop clearance of 7" on a 52" prop. Then, simple trig would show me that the axle should be more like 10" behind the forward face of the main spar. Placing the axle at 6 and1/2" behind the fwd face of the main spar, translates to the CG being at 22% chord. This is the mean of the 15% and 30% chord. I get the impression that the 6 and 1/2 " would set the axle infront of the aft CG posn. My initial conclusion therefore is that you would not be able to execute a full stall attitude landing. However, I heard something about angular inertia forces as a result of the momentum of the aircraft and the arm from the axle to the cg position. Is this maybe where the wheels fell off (so to speak) If this angular inertia forces should be brought into consideration; does anybody have a publication reference for me. I can only see all sorts of complicated factors such as induced drag as a result of spin up forces on the wheel having to be quantified. Any comments on the subject?? Steve in South Africa steveb@aviation.denel.co.za ------------------------------ Date: Thu, 22 Jan 1998 05:44:48 GMT From: bbland@busprod.com (Brian Bland) Subject: KR:Place to list items you want to sell I have set up a message board for anyone that has any items for sale. You can access it by clicking on "KR Stuff For Sale" at my webpage. Brian J. Bland, PP, A&P Claremore, OK Building stretched and widened KR-2S=20 Currently skinning the boat with plywood KR-2SBuilder@bigfoot.com http://www.KR-2S.home.ml.org ------------------------------ Date: Thu, 22 Jan 1998 01:18:31 -0800 From: Ross Youngblood Subject: KR: Taildragger Training in Phoenix I've had a couple of people ask where I went flying at Christmas when I was visiting my family in the Phoenix area. Here is the webpage address for those interested. I'm trying to figure out how I can sneek back over for a 4-day weekend to get some more flying in. The weather is not so hot here in Oregon this time of year. http://www.aerobatics.com/fly/home.html - -- ------------------------------ Date: Thu, 22 Jan 1998 01:19:13 -0800 From: Ross Youngblood Subject: KR: Tramahawk[Fwd: BOUNCE krnet-l@lists.teleport.com: Non-member submission from ["Jim Sellars" ]] This is a multi-part message in MIME format. - --------------90A413B229DB02FD1C431525 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit - --------------90A413B229DB02FD1C431525 Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline Received: by mail1 for krnet (with Cubic Circle's cucipop (v1.21 1997/08/10) Thu Jan 22 01:10:16 1998) X-From_: krnet-l-owner Mon Jan 19 10:31:13 1998 Return-Path: owner-krnet-l@lists.teleport.com Received: (from daemon@localhost) by smtp4.teleport.com (8.8.7/8.7.3) id KAA12787; Mon, 19 Jan 1998 10:31:12 -0800 (PST) Date: Mon, 19 Jan 1998 10:31:12 -0800 (PST) From: owner-krnet-l@teleport.com Message-Id: <199801191831.KAA12787@smtp4.teleport.com> To: owner-krnet-l@teleport.com Subject: BOUNCE krnet-l@lists.teleport.com: Non-member submission from ["Jim Sellars" ] >From krnet-l-owner Mon Jan 19 10:31:09 1998 Received: from mail1.auracom.net (mail1.auracom.net [165.154.140.21]) by smtp4.teleport.com (8.8.7/8.7.3) with ESMTP id KAA12765 for ; Mon, 19 Jan 1998 10:31:08 -0800 (PST) Received: from front-office (ts4-d247.mon.auracom.com [207.179.141.247]) by mail1.auracom.net (8.8.5/8.8.5) with SMTP id NAA19242 for ; Mon, 19 Jan 1998 13:33:04 -0500 (EST) From: "Jim Sellars" To: Subject: Re: KR: Spins and Tomahawks Date: Mon, 19 Jan 1998 14:31:55 -0400 Message-ID: <01bd2508$8518c100$f78db3cf@front-office> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 4.71.1712.3 X-MimeOLE: Produced By Microsoft MimeOLE V4.71.1712.3 Hello Folks: I have about 75 hours in the PA-38, and can tell you that the best thing that can be said about the thing is that is is very tough. We have a flight school here in Moncton, that used them very heavily for many years. What heavy student ham hands can do to a little airplane is what they write about in the Bible. But this little airplane came back kicking every time. Yes very underpowered but the hershey bar wing really gives up all at once when it stalls. Decending turn spins and climbing turn spins are like a top at full pull. We have do demonstrate prophiciency in spins to get a private licence in Canada. This plane definitely makes you pay attention. We have a nick name for the PA-38 here the "Trauma Hawk". Many a Cessna flying tiger messed his pants after his first spin ride in the little "T" tailed bird. Regards; Jim - -----Original Message----- From: Micheal Mims To: krnet-l@teleport.com Date: Saturday, January 17, 1998 2:15 AM Subject: Re: KR: Spins and Tomahawks >At 11:53 PM 1/16/98 EST, you wrote: >>I recently rented a Tomahawk, and the instructor was afraid for me to STALL >it. I never went back for another flight, even though he signed me off to do so. >> >> > >I think the PA-38 would have been a great little plane with a few minor (yea >right) mods. For one it is way underpowered and two that T tail thing has >got to go! I understand the T tail was purely for marketing, seems a market >survey of student pilots showed the T tail looked cool! Oh well that >marketing scheme cost a few lives and makes the airplane a little weird in >the spin recovery dept. It seems the T tail makes the rudder more effective >(none of it is blanked out by the horizontal stab) in a spin, so effective >that during spin recovery you can actually start a spin in the other >direction if your not on your toes! Other than those two things I liked the >cockpit (nice and big) the fighter plane like view out the bubble canopy an d >the controls, they felt pretty good once you were used to them. In my >opinion (and yes its worth every cent you paid) it is not a good trainer and >at best with more HP would have been a great primary IFR training platform. >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >Micheal Mims >Oh My,.......Its 1998!! > >mailto:mikemims@pacbell.net >http://home.pacbell.net/mikemims > > - --------------90A413B229DB02FD1C431525-- ------------------------------ Date: Thu, 22 Jan 1998 02:14:14 -0800 From: Ross Subject: KR: Radio Noise (Was Flight testing) Tom Crawford wrote: > > Drum roll please--- > > It's the Compufire! Anyone had to fix this problem? How did you do it? > Any ideas? Having to switch off the Comp. and run on the mag every time > I want to use the radio is possible, but a major inconveinience. There are two possiblities that I can see. 1) The High voltage potential put out by the COMPU-FIRE to your spark plugs, is getting "broadcast" from the spark plug wires. You might play with different plug wires, or buy some shielding for the outside, and install this.... you might want to talk to COMPU-FIRE, as it might be possible that ground sheilding could cause a short, if there is a nick in the insulation on your plug wires... the higher potentials are more likely to "arc" through the air or on dirt. I learned that this is a common cause of automotive coil failures in electronic ignition modules. 2) The COMPU-FIRE manual indicates that the unit can require large quantities of current for short periods of time. The manual indicated that each side is capable of 6A, and that if the engine is stopped with the rotor in the correct position you could have as much as 12A steady state current. I suspect that when the engine is running the current may spike briefly during normal operation, and that these spikes are not well liked by your radio. I don't know if you have a handheld, or if the radio is powered by the airplane, but if it is... this is probably the reason you are having difficulty. Here are some things you *might* want to try... I don't know if they will help but they might be worth it. 1) Insure the COMPU-FIRE module is well grounded. Add a ground braid. With 6A flowing, it needs someplace to go... improving ground may reduce switching noise (assuming the unit is switching current). 2) By the same token, a larger gague line to the unit, might be helpful, but this will probably not be as big a bank for the buck as using a SHIELDED line from your 12V power to the COMP-U-FIRE. This makes me think I neeed to consider doing this ahead of time. 3) Your voltage regulator might be having trouble regulating the voltage under load... that is with the COMPU-FIRE unit on there may be more gazoutas, then gazintas, in the electron department. In this case with the COMPU-FIRE switching, you might get more voltage spikes. (Wild Guess here). Playing with a 10uf to 100uf capacitor between your radios +12 and ground might help if this is going on. If things improve, then your voltage regulation is not so hot, or your system may be over taxed. I don't know if I'd leave the capacitor in permanently, but if you do, put it on the radio side of your fuse, as someday, it might short out, and poof, the fuse will keep things from getting nasty. It would help to know if you are powering your radio off the airplanes electrical or not... most of my ideas were assuming that this was the case, and are things I'd try to figure out what to do next. -- Regards Ross ------------------------------ Date: Thu, 22 Jan 1998 02:28:40 -0800 From: Ross Subject: Re: KR: NEED SPECS LLoyd, My KR-2 is 5'6" Wheel to Wheel (Retract), and 7'2" from stub fitting to stub fitting. With the engine OFF, it fits nicely in a Ryder truck, but you need two or three people to lift it. With the engine on... I'm looking for a trailer. - -- Ross Lloyd Perkins,Jr. wrote: > > Hello All ,. > I need the lenghs of the wing panels on a KR-2 and the distance between > the wheels..... I have bought a KR and need to transport it . What kind > of trailer is everyone else using??? > Thanks > LLoyd ------------------------------ Date: Thu, 22 Jan 1998 02:38:36 -0800 From: Ross Subject: Re: KR: Oregon EAA Fly-in/Air Fair Paul, Hey I will run this up the flag pole at the Next EAA meeting here in Corvallis, it would be WAY cool if I could fly down! Geez what a concept! -- Ross Linda & Paul Martin wrote: > > KR flyers/builders are invited to Medford, Oregon, June 5,6,&7th for the > State EAA gathering. > > Several local members are Oshkosh, Sun & Fun, etc. major award winners > and will be there including the T-38 boys, Express, Lanceair, Kitfox... > groups. Even the Cherokee, Cessna, etc. owners clubs are being invited > ;-). Looks like over 100 planes so far. Oscar may be there too (they > might allow bonfires). I'd guess Ross will have his 40 hrs. flown off by > then and be able to attend, right Ross? > > Camping, barbecue, breakfasts, free food for those flying in, free > admittance and parking for everyone. > > I hope some other KR's will be there besides mine, there are several in > our area. I can house a few KR folks/overnighters here. Should we make > this into a Northwest KR gathering? > > Oh no, did I just volunteer for something? > > Paul M. > Ashland, OR ------------------------------ Date: Thu, 22 Jan 1998 02:41:42 -0800 From: Ross Subject: Re: KR: FLIGHT TRAINING Lloyd, The person thinking about a flight sylabus was me...(Ross). I think your rate is quite good, where in Va are you? I think the only possible issue is my weight. At 210# we might be overweight... depending on fuel etc. My father lives near Charlottesville so I can swing over and visit him along the way. I think at a minimum some flight time would be a great idea. -- Ross Lloyd Perkins,Jr. wrote: > > Hello All , > I am interested in providing flight training in my KR-2 here in Va.... > At one time someone was working on a flight training sylabis for the KR-2 > .. Did it get finished???? I am A Certified Flght Insructor and an > A/P. All those interested should contact me and let me know . I think > 35.00 per hour for me and the Airplane is resonable... Dont you agree?? > Thanks, > Lloyd > E-MAIL LEPERKINS@JUNO.COM ------------------------------ Date: Thu, 22 Jan 1998 02:43:33 -0800 From: Ross Subject: Re: KR: Spins Thanks Peter, I brought up your model post. -- Ross Peter Hudson wrote: > > Hi gang, > > That was me. I built a scale KR-2 and could flat spin it at will. It > was unrecoverable but with a slow enough decent rate to prevent damage > on impact. This should not be taken to suggest the full sized KR-2 > would act the same. At the last discussion there were a number of > pilots who spin their KRs regularly. I attribute the model behavior to > scale effects. (any scale modeller will tell you you need to increase > the tail volume for dynamically similar flight characteristics.) > > I intend to stall and spin mine when it's done (in a progressive manor) > as well as a few loops and rolls etc. (not at gross weight) > > -Peter Hudson- > > I forget who wrote: > << I think that Rick Junkin did some playing with a scale model, and > > found that it would flat spin easily. There were also some anticdotal > > discussions on this about a year ago. >> > > Rick wrote: > > Nope, wasn't me. I haven't put anything about spins in my test plan yet > > because I'm not going to recommend it until after I spin mine. ------------------------------ Date: Thu, 22 Jan 1998 02:44:24 -0800 From: Ross Subject: KR: N541RY Progress update Well I went and spent $80 on a crimping tool so my nifty MOLEX connectors will be done right. The cheap crimping tool does OK, but the nifty one holds the pins for you and makes everything go MUCH faster. (With my wife & I both in electronics, this has somthing to do with the justification for such a tool). At any rate, I wired up some more "stuff", tonight was putting the finishing touches on the headset jacks which will be behind the cockpit. I got a nice brass plate at the hardware store for $2.00 cut it to size, and drilled it for the headphone & mic jacks. This is now done. This then is wired up to a nifty mil-spec harness that snakes behind the seat, along the fuselage side, and to a 15 pin molex connector. This is all part of my plan to make the panel easily removable. I'm considering shelling out $10 or so for large mil-spec screw type connector for the primary wiring from the firewall, if not then I will probably not have a totally quick disconnect panel, as the Alternator and battery wiring is #10/#12 wire and is not suited for molex connectors. A lot depends on timing and $$$.. I can always do this later I suppose. I built up my RST antenna over the weekend, and just "potted" the balen end of the antenna to the aft deck by FLOXING it in place. The idea is to keep vibration from shaking the antenna apart over time, and the COAX end with the little ferrite beads is sort of heavy. To save $$$ I bought a 25' 50ohm Coax with male BNC's at each end, this has been cut in half, then two lengths of 1' were cut from this and soldered to the back of the Terra Avionics tray. They have a nasty little connector arrangement, that requires careful attention to the Transponder manual to figure out how to solder it in. I had never seen this type of RF connector before (but I work with high speed digital stuff, so what do I know), at any rate, if you buy just the COM radio... you will not have a clue, as the documentation for it is wrong, and both COM & XPonder have the same connector. Thats it for tonight! -- Ross ------------------------------ End of krnet-l-digest V2 #21 ****************************