From: krnet-bounces@mylist.net To: John Bouyea Subject: KRnet Digest, Vol 346, Issue 228 Date: 12/3/2004 9:00:18 PM Send KRnet mailing list submissions to krnet@mylist.net To subscribe or unsubscribe via the World Wide Web, visit http://mylist.net/listinfo/krnet or, via email, send a message with subject or body 'help' to krnet-request@mylist.net You can reach the person managing the list at krnet-owner@mylist.net When replying, please edit your Subject line so it is more specific than "Re: Contents of KRnet digest..." Today's Topics: 1. RE: Bent Spars = Big Flaps? (Stephen Jacobs) 2. spar carbon fiber (Colin & Bev Rainey) 3. Re: spar carbon fiber (GavinandLouise) 4. Re: spar carbon fiber (Donald Reid) 5. Re: spar carbon fiber (GavinandLouise) 6. Re: and a KR question (Orma) 7. Re: a KR question (jscott.pilot@juno.com) 8. Eureka - I found it (Edward Seaman) 9. R?f. : KR> Eureka - I found it (Serge VIDAL) 10. See your point (Colin & Bev Rainey) 11. VW 2100 (Jerry J Allen) 12. Re: VW 2100 (Tim Hoversten) 13. RE: VW 2100 (Mark Jones) 14. KR1>alierons (RENOSADLER@aol.com) 15. Re: VW 2100 (Orma) 16. Re: Intake Manifolds (paulwasp@webtv.net) 17. Re: VW 2100 (gleone) 18. Performance (fun friday) (Steven Phillabaum) 19. Re: spar carbon fiber (Robert Morrissey) 20. RE: spars (Glynnis Young) 21. Re: spars (Martindale Family) ---------------------------------------------------------------------- Message: 1 Date: Fri, 3 Dec 2004 07:05:54 +0200 From: "Stephen Jacobs" Subject: RE: KR> Bent Spars = Big Flaps? To: "'KRnet'" Message-ID: <000001c4d8f5$cb79f0d0$da64a8c0@stephen> Content-Type: text/plain; charset="us-ascii" a flap that starts at the fuselage and extends outboard of the stub wing. This creates the potential for some very effective flaps. +++++++++++++++++ One of the primary idea's behind the bent spar is to move the WAF's OUTWARDS. The centre section is then one-piece (canting up for the dihedral where it exits the fuselage) and stretched to about mid span. Then you have ample room for flaps on the centre section (and ailerons on the outboard section). QED. The rear spar is the snag - you are correct is assuming that it sweeps at the WAF intersection. On my dwgs the rear spar now sweeps from the centre line of the aircraft with a constant sweep (and dihedral) to the tip. It will mount to the fuse much the same way the GP4 rear spar mounts. For the information of our intrepid watchdog (with the short bio) - I am not crazy and I have no death wish. Everything that I do from the main spar to the elevator hinges will be checked by someone who knows exactly what he is doing. Steve J ------------------------------ Message: 2 Date: Fri, 3 Dec 2004 05:31:58 -0500 From: "Colin & Bev Rainey" Subject: KR> spar carbon fiber To: "KRnet" Message-ID: <004801c4d923$51ea0330$2d432141@RaineyDay> Content-Type: text/plain; charset="iso-8859-1" I would still make up 2 samples and test each with and without the carbon fiber to test their different load carrying abilities. I think you may find it interesting. The "cuff" of carbon fiber will move the immediate loading of the spar out board to the bare spar, while the carbon fiber will carry it at the connection of the WAF. Similar to a broken bone although the break is healed better than original bone it is weaker right next to the previous break. Your additional material will reinforce at the joint, but how will that cause the load transfer just after it. The abrupt ending of the carbon fiber may cause a more concentrated force application to the spar, instead of the wider force transfer from the WAF. Colin & Beverly Rainey Apex Lending, Inc. crainey@apexlending.com 407-323-6960 ------------------------------ Message: 3 Date: Sat, 4 Dec 2004 08:42:39 +1000 From: "GavinandLouise" Subject: Re: KR> spar carbon fiber To: "KRnet" Message-ID: <001401c4d989$65fad1e0$0100000a@vic.bigpond.net.au> Content-Type: text/plain; charset="iso-8859-1" Enough about spars already!!! this has been flogged a thousand times. There must be a structural engineer out there somewhere who would be only too happy to answer any questions about this issue. So maybe we can put it to rest, and only focus on the facts of this issue as documented by someone who really knows. Gav ------------------------------ Message: 4 Date: Fri, 03 Dec 2004 05:51:34 -0500 From: Donald Reid Subject: Re: KR> spar carbon fiber To: KRnet Message-ID: <6.1.0.6.2.20041203054724.01b5df00@mail.peoplepc.com> Content-Type: text/plain; charset="us-ascii"; format=flowed At 05:42 PM 12/3/2004, you wrote: >Enough about spars already!!! this has been flogged a thousand times. >There must be a structural engineer out there somewhere who would be >only too happy to answer any questions about this issue. I am a licensed professional engineer and I gave my short answer yesterday. To repeat: "If you don't know what you are doing, don't do it." This is not the correct forum to design a critical wing structure. Most of the ideas that have been proposed have been anywhere from silly to dangerous. One more time: "If you don't know what you are doing, don't do it." Don Reid - donreid "at" peoplepc.com Bumpass, Va Visit my web sites at: AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: http://aerofoilengineering.com KR2XL construction: http://aerofoilengineering.com/KR/KR2XL.htm Aviation Surplus: http://aerofoilengineering.com/PartsListing/Airparts.htm EAA Chapter 231: http://eaa231.org Ultralights: http://usua250.org VA EAA State Fly-in: http://vaeaa.org ------------------------------ Message: 5 Date: Sat, 4 Dec 2004 08:56:21 +1000 From: "GavinandLouise" Subject: Re: KR> spar carbon fiber To: "KRnet" Message-ID: <000901c4d98b$4f1e8be0$0100000a@vic.bigpond.net.au> Content-Type: text/plain; charset="iso-8859-1" Thanks Don. Gav ----- Original Message ----- From: "Donald Reid" To: "KRnet" Sent: Friday, December 03, 2004 8:51 PM Subject: Re: KR> spar carbon fiber > At 05:42 PM 12/3/2004, you wrote: > >Enough about spars already!!! this has been flogged a thousand times. > >There must be a structural engineer out there somewhere who would be > >only too happy to answer any questions about this issue. > > I am a licensed professional engineer and I gave my short answer > yesterday. To repeat: "If you don't know what you are doing, don't do it." > > This is not the correct forum to design a critical wing structure. > Most of > the ideas that have been proposed have been anywhere from silly to dangerous. > > One more time: "If you don't know what you are doing, don't do it." > > > > Don Reid - donreid "at" peoplepc.com > Bumpass, Va > > Visit my web sites at: > > AeroFoil, a 2-D Airfoil Design And Analysis Computer Program: > http://aerofoilengineering.com > > KR2XL construction: http://aerofoilengineering.com/KR/KR2XL.htm > Aviation Surplus: > http://aerofoilengineering.com/PartsListing/Airparts.htm > EAA Chapter 231: http://eaa231.org > Ultralights: http://usua250.org > VA EAA State Fly-in: http://vaeaa.org > > > > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 6 Date: Fri, 3 Dec 2004 07:26:17 -0500 From: "Orma" Subject: KR> Re: and a KR question To: "KRnet" Message-ID: <01dc01c4d933$4aa17030$4b32d445@ROBBINS1> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original About the glued up sides. My KR was started before the Eighties and the glue is still in tact. Check all the glue joints for completeness and only replace the one's that don't look good. If they all look good, use the sides. Orma Southfield, MI N110LR celebrating 20 years Flying, flying and more flying http://www.kr-2.aviation-mechanics.com/ ------------------------------ Message: 7 Date: Fri, 3 Dec 2004 14:55:58 GMT From: "jscott.pilot@juno.com" Subject: Re: KR> a KR question To: krnet@mylist.net Message-ID: <20041203.065642.13405.41420@webmail18.lax.untd.com> Content-Type: text/plain David, The glued joints in your fuselage sides should be fine. Additionally, if the T-88 in the bottles appears to be cloudy or crystalized, put the bottle in some warm water and it will return to it's previous state, much like warming crystalized honey. It should also be OK to use. -Jeff -- David Lininger wrote: Some years ago (>10) I started building my KR2. I managed to get the fuse sides built before other things interferred and I had to stop working. I know that the T88 I bought back then probably should not be used for the plane, but what about the glue joints I made back then? The sides have never been exposed to weather, but they have been flat on the worktable in the shed all this time. Should I start over, or will these be okay to continue? If I can use these sides yet, I want to at least get to the boat stage during the spring and summer building season (no heat or a/c in the shed). -- 73, David, kb0zke Rev. 2:10c ------------------------------ Message: 8 Date: Fri, 3 Dec 2004 15:22:37 +0000 (GMT) From: Edward Seaman Subject: KR> Eureka - I found it To: KRnet Message-ID: <20041203152237.35382.qmail@web25304.mail.ukl.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 The KR as such is nothing much, but the concept generally results in a stunning wee bird - it offers wonderful potential and brings out the best in the "experimental" component amongst us. Witness N19MMR, N41768, N891JF, N4DD, N902G, N1213W, N??TP. The jury is still out on 53ML, but my guess is that this variant will do the fleet great justice. Add the Yeehaa of them all, old big foot (N211LF) and what do we have - anything but a KR - we have a collection of brilliant airplanes that have ALL been inteligently adapted to suite a variety of tastes and desires. There are many, many more. In short - the KR is a concept, the resultant airplanes are the innovative expressions of imaginative and creative craftsmen. Sounds a bit poetic, but it is true. Sadly, 90% of the aggro around a KR stems from the need for changes. We all agree that the stock KR2 or even 2S, built as per plan and within the weight, would be a great day, VFR, hand start, around the patch airplane. Adrian Carter (C-FAFY) demonstrated this (and some)- he even made good use of the original RR folding legs (and no KR nett). However, as evidenced by everything I have seen, the typical KR builder wants something else (more). Yes - we need to lean over sometimes and we need to "experiment" sometimes, but when one of the respected members of the group makes a statement like: The only potential good result that I can see coming from this recent set of discussions is that most of the planes will never be finished. Well that essentially screws that discussion - not so? Not sure hoe he differentiate between the guy /gal that runs out of cash, looses a job, someone dies, divorce - any one of a hundred reason for quitting - and then pegs the cause to a modified mainspar. This is sad. I know where the guy is coming from and he is mostly correct in a world of litigation and in the world of "minding my own business" - a world that the pioneers of aviation would never understand - ask Wilbur (or Orville). The other part of minding my own business is really doing exactly that. If you feel safe in your ivory tower and you have no need for help from anyone, why do you read the posts - if not to seek an opportunity to contribute? With great respect, I know that you shared your composite u/c design with those that are planning a 1400lb airplane. Not much help coz none of us have a 1400lb main spar (like you do). Yes, you exonerated yourself, but I call that a cop out. This will probably cost me dearly, but what have you actually contributed lately - criticism does not count. The brief bio does not for count much either. Even the insufferable Colin (and Beverly) Rainey tries to contribute - poor misguided soul. Never mind, at least he tries. I take my cue from LF, ML, MJ, TP, DH and the like - they are the backbone of the KR as it stands today. They wil hedge, duck and dive - but eventually they will help. Actually, that is not true - only applies to the the guy with the over-active Labrador - but he will always be constructive if you are honest with him (and patient) Some of them hold you in awe, so I followed suite. I want to build an airlane. I am a 500 hout PPL and an engineer (certified, degreed - whatever) so I fully appreciate your concerns. I have the money ready - even for a QB RV8/9 kit, but that would be a bit like having haemerroids - every other asshole has them. (Sorry Dana - I suspect that you may stiil be around) The last comment from the esteemed member (with the brief bio) really canned it for me. Eureka, I have found my way forward - same price, same performance, same media, the only snag is that the support group is foreign - so no KRnett. It is not a KR, but all the variants are close - Anything from a single seat, 2 in tandem, two side-by-side, VW /Vair /0-200 or even IO-360. No mods required, the cabin (on the side-by-side models) is wider than a C172 and most of them offer conventional gear, or the training gear, or folding legs. Plans cost a few bob more, but then they are the creations of Claude Piel (or Giuseppe Vidor) - no mods required. (simmilar pedigree to the SF260, Ferrari, Masserati) Incidently: Quote: "Ken Rand and Stu Robinson where not experts in airplane structures, but they did not need to be. They copied an existing design and did not screw around with it" end quote. Wow - from a 35hp single seat to a 65hp two seater without screwing with the design - fuck me gently George. At your mercey ML - a man must do what a man must do. ___________________________________________________________ Moving house? Beach bar in Thailand? New Wardrobe? Win £10k with Yahoo! Mail to make your dream a reality. Get Yahoo! Mail www.yahoo.co.uk/10k ------------------------------ Message: 9 Date: Fri, 3 Dec 2004 16:55:08 +0100 From: "Serge VIDAL" Subject: R?f. : KR> Eureka - I found it To: KRnet Message-ID: Content-Type: text/plain; charset="iso-8859-1" And what did you find exactly, may we know? Serge Vidal KR2 ZS-WEC Paris, France Edward Seaman Envoyé par : krnet-bounces+serge.vidal=sagem.com@mylist.net 2004-12-03 16:22 Veuillez répondre à KRnet Remis le : 2004-12-03 16:23 Pour : KRnet cc : (ccc : Serge VIDAL/DNSA/SAGEM) Objet : KR> Eureka - I found it The KR as such is nothing much, but the concept generally results in a stunning wee bird - it offers wonderful potential and brings out the best in the "experimental" component amongst us. Witness N19MMR, N41768, N891JF, N4DD, N902G, N1213W, N??TP. The jury is still out on 53ML, but my guess is that this variant will do the fleet great justice. Add the Yeehaa of them all, old big foot (N211LF) and what do we have - anything but a KR - we have a collection of brilliant airplanes that have ALL been inteligently adapted to suite a variety of tastes and desires. There are many, many more. In short - the KR is a concept, the resultant airplanes are the innovative expressions of imaginative and creative craftsmen. Sounds a bit poetic, but it is true. Sadly, 90% of the aggro around a KR stems from the need for changes. We all agree that the stock KR2 or even 2S, built as per plan and within the weight, would be a great day, VFR, hand start, around the patch airplane. Adrian Carter (C-FAFY) demonstrated this (and some)- he even made good use of the original RR folding legs (and no KR nett). However, as evidenced by everything I have seen, the typical KR builder wants something else (more). Yes - we need to lean over sometimes and we need to "experiment" sometimes, but when one of the respected members of the group makes a statement like: The only potential good result that I can see coming from this recent set of discussions is that most of the planes will never be finished. Well that essentially screws that discussion - not so? Not sure hoe he differentiate between the guy /gal that runs out of cash, looses a job, someone dies, divorce - any one of a hundred reason for quitting - and then pegs the cause to a modified mainspar. This is sad. I know where the guy is coming from and he is mostly correct in a world of litigation and in the world of "minding my own business" - a world that the pioneers of aviation would never understand - ask Wilbur (or Orville). The other part of minding my own business is really doing exactly that. If you feel safe in your ivory tower and you have no need for help from anyone, why do you read the posts - if not to seek an opportunity to contribute? With great respect, I know that you shared your composite u/c design with those that are planning a 1400lb airplane. Not much help coz none of us have a 1400lb main spar (like you do). Yes, you exonerated yourself, but I call that a cop out. This will probably cost me dearly, but what have you actually contributed lately - criticism does not count. The brief bio does not for count much either. Even the insufferable Colin (and Beverly) Rainey tries to contribute - poor misguided soul. Never mind, at least he tries. I take my cue from LF, ML, MJ, TP, DH and the like - they are the backbone of the KR as it stands today. They wil hedge, duck and dive - but eventually they will help. Actually, that is not true - only applies to the the guy with the over-active Labrador - but he will always be constructive if you are honest with him (and patient) Some of them hold you in awe, so I followed suite. I want to build an airlane. I am a 500 hout PPL and an engineer (certified, degreed - whatever) so I fully appreciate your concerns. I have the money ready - even for a QB RV8/9 kit, but that would be a bit like having haemerroids - every other asshole has them. (Sorry Dana - I suspect that you may stiil be around) The last comment from the esteemed member (with the brief bio) really canned it for me. Eureka, I have found my way forward - same price, same performance, same media, the only snag is that the support group is foreign - so no KRnett. It is not a KR, but all the variants are close - Anything from a single seat, 2 in tandem, two side-by-side, VW /Vair /0-200 or even IO-360. No mods required, the cabin (on the side-by-side models) is wider than a C172 and most of them offer conventional gear, or the training gear, or folding legs. Plans cost a few bob more, but then they are the creations of Claude Piel (or Giuseppe Vidor) - no mods required. (simmilar pedigree to the SF260, Ferrari, Masserati) Incidently: Quote: "Ken Rand and Stu Robinson where not experts in airplane structures, but they did not need to be. They copied an existing design and did not screw around with it" end quote. Wow - from a 35hp single seat to a 65hp two seater without screwing with the design - fuck me gently George. At your mercey ML - a man must do what a man must do. ___________________________________________________________ Moving house? Beach bar in Thailand? New Wardrobe? Win £10k with Yahoo! Mail to make your dream a reality. Get Yahoo! Mail www.yahoo.co.uk/10k _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 10 Date: Fri, 3 Dec 2004 10:59:29 -0500 From: "Colin & Bev Rainey" Subject: KR> See your point To: "KRnet" Message-ID: <005501c4d951$12b867f0$2d432141@RaineyDay> Content-Type: text/plain; charset="iso-8859-1" ED I do not see your point that applies to this forum. What I have tried to express to builders is to be prepared for rule changes and build safely so that they can fly a long time safely. I think that purpose is shared by Mark L and Mark J, and everyone else who shares this forum. Your expletives are unnecessary since we all have walked the long path as adults and appreciate the trials. In fact they are rude! If the design doesn't fit then so be it. If you have the knowledge change it, if not see someone who does, or pick a design that fits you. You can still show up at the gathering or Sun n Fun or where ever and all will greet you, because you are one of us...a builder and pilot. But don't slander the only crowd that embraces you. We are only 500,000 in a nation of over 245,000,000 people! Of that less then half are not commercial pilots. 1% are weekend fun guys that just love to fly! I commend all of us for pursuing our dreams and flying for the love of it. Anyone who wants to contact me off net feel free anytime. I do fly a KR2 N96TA is a KR2 plans built, and has 4 hrs on her so far. Good luck to all, and FLY SAFE! Colin & Bev Rainey KR2(td) N96TA Sanford, FL crainey1@cfl.rr.com http://kr-builder.org/Colin/index.html ------------------------------ Message: 11 Date: Fri, 3 Dec 2004 11:14:21 -0600 From: "Jerry J Allen" Subject: KR> VW 2100 To: Message-ID: <000201c4d95b$b73ebd10$77b62140@allenjj> Content-Type: text/plain; charset="iso-8859-1" I have a VW 2100 engine ..when i give full power she cuts out over 3200 RPM and quits ? it is not carb ice.has anyone had this prob. ........also when I pull mix control it will not shut down the engine. I have a Elaision carb . thanks Jerry ------------------------------ Message: 12 Date: Fri, 3 Dec 2004 09:31:27 -0800 (PST) From: Tim Hoversten Subject: Re: KR> VW 2100 To: Jerry J Allen , KRnet Message-ID: <20041203173127.91271.qmail@web54008.mail.yahoo.com> Content-Type: text/plain; charset=us-ascii Is it hard starting too? I have a 1915 cc with Zenith carb that wouldn't quit, thought it was a carb problem, until the aluminum mag drive puck disintegrated - check your timing as well. Tim --- Jerry J Allen wrote: > I have a VW 2100 engine ..when i give full > power she cuts out over 3200 RPM and quits ? > it is not carb ice.has anyone had this prob. > ........also when I pull mix control it will not > shut > down the engine. I have a Elaision carb . > thanks Jerry > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to > KRnet-leave@mylist.net > > please see other KRnet info at > http://www.krnet.org/info.html > ===== Tim Hoversten Portage, WI timhoversten@yahoo.com __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo ------------------------------ Message: 13 Date: Fri, 3 Dec 2004 12:05:47 -0600 From: Mark Jones Subject: RE: KR> VW 2100 To: 'Jerry J Allen' , 'KRnet' Message-ID: <370D915E4564D611B0530050DABB9FC2025ED0E7@SIC-EXCHANGE> Content-Type: text/plain; charset="iso-8859-1" Jerry, I have an Ellison on a Corvair and have experienced the same problem. Last night I was talking with another KR flyer who also experienced the same thing and he tried everything possible. When all else failed, he simply richened his mixture and his problem never happened again. I am going to try it this weekend and see if that is also my problem. When I pull mixture control my Ellison will not shut down my engine either. Just turn the swithch off.Good Luck. Mark Jones (N886MJ) Wales WI -----Original Message----- Behalf Of Jerry J Allen Sent: Friday, December 03, 2004 11:14 AM I have a VW 2100 engine ..when i give full power she cuts out over 3200 RPM and quits ? it is not carb ice.has anyone had this prob. ........also when I pull mix control it will not shut down the engine. I have a Elaision carb . thanks Jerry _ ------------------------------ Message: 14 Date: Fri, 3 Dec 2004 14:15:59 EST From: RENOSADLER@aol.com Subject: KR> KR1>alierons To: krnet@mylist.net Message-ID: <9e.1b016487.2ee2156f@aol.com> Content-Type: text/plain; charset="US-ASCII" I have seacherd through the archives about the length to cut your ailerons on a KR1; as is in Richard Shriley's KR1 but no length mention, ive been told anywhere from 4.5ft. to 6' my outboard wings are 5ft long any suggestions thanks Bill... ------------------------------ Message: 15 Date: Fri, 3 Dec 2004 14:40:26 -0500 From: "Orma" Subject: Re: KR> VW 2100 To: "KRnet" Message-ID: <020001c4d96f$f0e7b210$4b32d445@ROBBINS1> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Hello Jerry I have a type 4, 2300. and my prior engine, 1910cc. Both engines had trouble running over 3000 RPM. Joe at revmaster told me that a lot of the larger engines have this problem. The solution is to add more fuel. That may mean to add a fuel pump, or increase the mixture, to get it to increase RPM. Now I don't have any problems going up to 2600 RPM. Orma Southfield, MI N110LR celebrating 20 years Flying, flying and more flying http://www.kr-2.aviation-mechanics.com/ ------------------------------ Message: 16 Date: Fri, 3 Dec 2004 17:58:52 -0500 From: paulwasp@webtv.net Subject: KR> Re: Intake Manifolds To: krnet@mylist.net (KRnet) Message-ID: <19634-41B0EFAC-421@storefull-3232.bay.webtv.net> Content-Type: Text/Plain; Charset=US-ASCII Hi, all; I'm still looking for VW single port manifolds for KR.....Left, right and bottom crossover pipes. Paul KR2s primed, engine hanging. ------------------------------ Message: 17 Date: Fri, 3 Dec 2004 16:42:35 -0700 (Mountain Standard Time) From: "gleone" Subject: Re: KR> VW 2100 To: "KRnet" Message-ID: <41B0F9EB.00000E.04060@YOUR-FD6NVJCER4> Content-Type: Text/Plain; charset="iso-8859-1" Another possibility is a larger carb'. I seem to remember a discussion a while back on the Type 4. Being the base engine is fuel injected, I would think there are some high performance racing shops that might be able to help in that area. Nice thing about fuel injection is the reliability at altitude. I might be all wet so if I am, feel free to flame me. (Hey, I'm into whips and chains!) Gene Leone, Worland, Wyoming "Michael Moore is a living example to NEVER trust ANYONE who's bigger around than they are tall!" -------Original Message------- From: Orma Date: 12/03/04 12:43:40 To: KRnet Subject: Re: KR> VW 2100 Hello Jerry I have a type 4, 2300. and my prior engine, 1910cc. Both engines had trouble running over 3000 RPM. Joe at revmaster told me that a lot of the larger engines have this problem. The solution is to add more fuel. That may mean to add a fuel pump, or increase the mixture, to get it to increase RPM. Now I don't have any problems going up to 2600 RPM. Orma Southfield, MI N110LR celebrating 20 years Flying, flying and more flying http://www.kr-2.aviation-mechanics.com/ _______________________________________ Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net please see other KRnet info at http://www.krnet.org/info.html ------------------------------ Message: 18 Date: Sat, 4 Dec 2004 2:24:08 +0000 From: Steven Phillabaum Subject: KR> Performance (fun friday) To: Message-ID: <3khdin$e3lv5e@mxip02a.cluster1.charter.net> Content-Type: text/plain; charset=ISO-8859-1 Hello Gang, At the airport yesterday to fly the 172 spam can. The order wiser gentleman in the hanger next to my lease plane was restoring SOMETHING. I asked what it was. He looked at me and asked if I was building something. YES, I answered. A KR. With a dumb look he asked Why the heck? My reply was; 180 mph cruise, Low stall for a fast plane, less than the normal 7 gal per hr. and STABLE. (ask Bill Clapp) He said nothing, walked back in the hanger and shut himself in. Guess I will have to get him some coffee for some talk. I can't wait for the new "KR on steroids" to make a change in the attitudes. My wife thinks I'm already not around enough (in the garage) as it is. Just wait till the bird gets air bound. Fly in's I will be attending. Everyone please lets get barnstorming (to steal and old phrase) P.S. THE THIRD PART YOU MAKE REALLY DOES LOOK BETTER THAN THE FIRST ONE. Building my Horizontal Stabilizer. Steven Phillabaum Auburn, Alabama ------------------------------ Message: 19 Date: Fri, 3 Dec 2004 22:05:08 -0500 From: "Robert Morrissey" Subject: Re: KR> spar carbon fiber To: "KRnet" Message-ID: <000a01c4d9ae$11ce82e0$0201a8c0@phoenix> Content-Type: text/plain; charset="iso-8859-1" ----- Original Message ----- From: "GavinandLouise" Subject: Re: KR> spar carbon fiber > > So maybe we can put it to rest, and only focus on the facts of this issue as > documented by someone who really knows. > Gav I am quite concerned about all the useless discussion about KR spars and wing attach fittings. From reading the net for a year it is my understanding that there are many KRs flying and yet no spar or WAF failures to date. A KR flier has removed his WAFs, inspected the wood spar attachment area and WAFs for hole size, pitting, and surface rust. The only "problem" is surface rust and stain on the wood. THIS IS GOOD INFORMATION and gives a solid data point for all of us. This wing has a well designed spar and WAF attachment design. As you customize the KR to meet your personal needs consider not changing the basic primary structure and not needlessly adding weight. Weight is the enemy of any really good aircraft. While engineering production line repaires for F-4 and F-15 acft structure for McDonnell Acft never once did I design a repair of a non- defective area or to increase the repair strength greater then that designed into the aircraft. But all my major and minor repairs ensured minimal acft weight increase, minimum impact on aerodynamics, and installability of the repair. Having the Stress and Aero Dept at my beck and call made my job easy, and they designed two really fine aircraft.. The KR design is also a really fine aircraft, and affordable. bob morrissey camrwm@earthlink.net > ------------------------------ Message: 20 Date: Sat, 4 Dec 2004 04:46:21 +0000 (GMT) From: Glynnis Young Subject: RE: KR> spars To: KRnet Message-ID: <20041204044621.28844.qmail@web86909.mail.ukl.yahoo.com> Content-Type: text/plain; charset=iso-8859-1 It is not so much the strength of the WAF's that concerns me, it is drilling all those holes in the spar (cap). Even the landing gear mounts require holes drilled in the upper and lower spar cap ....... my intention is to add a wider pillar between the caps where the undercarriage mounts, add a 2mm 4130 "back-plate" behind the spar - then drill the mounting holes through the pillar - not the spar caps. This way the legs are sort of clamped to the spar without any holes in the load bearing caps - maybe even one size up on the ply web between the legs (and the necessary precautions against stress risers). =========== Without any other deviation from the plans - this makes sense to me. One of the builders suggested that changes to spar were silly or even dangereous, I wonder if this change would be viewed in that way. Staples: I note that all builders remove the staples after the adhesive has cured, so they are really just there for a snug fit while the adhesive sets. If a satisfactory alternate method of clamping the parts together is avaiable, can I assume that the staples are not essential? Reason for asking - I plan to pre-bent the boat side-frame when the ply is bonded to the ladder so that there is less stress when the sides are assembled. This means clamping everything during the cure, so I will not have access to the ourside if I want to see glue join (on the inside) to make sure the clamping pressure is right all over. Thanks G --------------------------------- ALL-NEW Yahoo! Messenger - all new features - even more fun! ------------------------------ Message: 21 Date: Sat, 4 Dec 2004 15:58:11 +1100 From: "Martindale Family" Subject: Re: KR> spars To: "KRnet" Message-ID: <001801c4d9bd$daee1960$c19fecdc@athlon2400> Content-Type: text/plain; charset="iso-8859-1" Folks I have the Dan Diehl brackets attached according to plan in my taildragger. I can assure you from personal experience that the legs will break before the spar and even so it takes a massive effort to achieve...like a stalled three point landing some ten feet up followed by three bounces and a busted prop. The KR spar is a bloody strong affair I can tell you. Your spine would snap before it does. John The Martindale Family 29 Jane Circuit TOORMINA NSW 2452 AUSTRALIA phone: 61 2 66584767 email: johnjanet@optusnet.com.au ----- Original Message ----- From: "Glynnis Young" To: "KRnet" Sent: Saturday, December 04, 2004 3:46 PM Subject: RE: KR> spars > It is not so much the strength of the WAF's that concerns me, it is > drilling all those holes in the spar (cap). Even the landing gear > mounts require holes drilled in the upper and lower spar cap ....... > > my intention is to add a wider pillar between the caps where the > undercarriage mounts, add a 2mm 4130 "back-plate" behind the spar - > then drill the mounting holes through the pillar - not the spar caps. This > way the legs are sort of clamped to the spar without any holes in the > load bearing caps - maybe even one size up on the ply web between the > legs (and the necessary precautions against stress risers). > > =========== > > Without any other deviation from the plans - this makes sense to me. > One of the builders suggested that changes to spar were silly or even dangereous, I wonder if this change would be viewed in that way. > > Staples: > > I note that all builders remove the staples after the adhesive has > cured, so they are really just there for a snug fit while the adhesive sets. If a satisfactory alternate method of clamping the parts together is avaiable, can I assume that the staples are not essential? > > Reason for asking - I plan to pre-bent the boat side-frame when the > ply is bonded to the ladder so that there is less stress when the sides are assembled. This means clamping everything during the cure, so I will not have access to the ourside if I want to see glue join (on the inside) to make sure the clamping pressure is right all over. > > Thanks > G > > > > --------------------------------- > ALL-NEW Yahoo! Messenger - all new features - even more fun! > _______________________________________ > Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp > to UNsubscribe from KRnet, send a message to KRnet-leave@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html ------------------------------ _______________________________________________ See KRnet list details at http://www.krnet.org/instructions.html End of KRnet Digest, Vol 346, Issue 228 *************************************** ================================== ABC Amber Outlook Converter v4.20 Trial version ==================================