From: "KR-net users group digest" To: "kr-net digest recipients" Subject: kr-net digest: March 07, 2000 Date: Wednesday, March 08, 2000 12:04 AM KR-NET Digest2 for Tuesday, March 07, 2000. 1. Re: Wheel shimmy 2. Re: Wheel shimmy 3. Don Reid's KR article stash... 4. Re: Wheel shimmy 5. KR2S structural analysis 6. More Engine Questions 7. Re: More Engine Questions ---------------------------------------------------------------------- Subject: Re: Wheel shimmy From: "Richard Parker" Date: Tue, 07 Mar 2000 05:44:20 PST X-Message-Number: 1 It might be a good thing to put on a preflight inspection list. I had a dampener come loose once in my Archer and upon landing at State College PA it shook so bad i thought I was going to go into the grass. The King Air that was on my A*S commented afterwards that he didnt think I would get it to stop because he could see it. Mind you he was so close he could probably read my registration sticker. Rich Parker Graham Schott wrote: > >I have a KR2 with Dan Diehl tri gear > >Yesterday I had WHEEL SHIMMY on landing like you >wouldn't believe. I was landing an asphalt runway. > >I landed on the mains, touched the nose wheel,( i >always do but I try not to ) then slowed down. When >the front wheel touched it shimmied. I couldn't lift >it so I braked, hard. It stopped but Hell, It >frightened me. > >HELP > >My beast is acting up > The nut that applies tension (friction) to the front wheel is adjustable. Tighten it up a little. Mine did the same thing at first. It needs to be a little tighter than you think it should be. I have had no problems since. -- Tom Crawford Gainesville, FL N262TC Mailto:toys@atlantic.net http://www.tomshardwoodtoys.com ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ---------------------------------------------------------------------- Subject: Re: Wheel shimmy From: Manager Bill Date: Tue, 07 Mar 2000 07:47:54 -0700 X-Message-Number: 2 We old riders of English motorcycles remember the shimmy dampener on the steering head. It was a simple friction knob with a couple of leather washers. For slow work with lots of maneuvering, such as in TT-track or desert racing, we kept the knob loose. For highway cruising, which is more like the takeoff and landing run of the KR, the knob was screwed down fairly tight. This would be a simple mod for a nosewheel. ---------------------------------------------------------------------- Subject: Don Reid's KR article stash... From: "Mark Langford" Date: Tue, 7 Mar 2000 19:06:30 -0600 X-Message-Number: 3 KRNetHeads, I was just stumbling around on my desktop and unearthed Don Reid's KR articles at http://users.erols.com/donreid/kr_SA.htm ( I used Web Copier to collect them all onto my machine for posterity). This is an invaluable resource, folks! I've just finished rereading the first and second ones (Ken's debut at OSH, and Fred Keller's show winning KR, built from a single piece of spruce using a CIRCULAR SAW!). Even if you've read these before, it's a great way to pass a few hours and learn a bit of KR history. And Fred's circular saw business makes one wonder why we fuss over all these little details that we like to fuss over on KRNet... Mark Langford, Huntsville, Alabama mailto:langford@hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford ---------------------------------------------------------------------- Subject: Re: Wheel shimmy From: The Muses Date: Tue, 07 Mar 2000 19:27:42 -0600 X-Message-Number: 4 At 07:49 AM 03/06/2000 -0500, you wrote: >Graham Schott wrote: >> >> I have a KR2 with Dan Diehl tri gear >> >> Yesterday I had WHEEL SHIMMY on landing like you >> wouldn't believe. I was landing an asphalt runway. >> >> I landed on the mains, touched the nose wheel,( i >> always do but I try not to ) then slowed down. When >> the front wheel touched it shimmied. I couldn't lift >> it so I braked, hard. It stopped but Hell, It >> frightened me. >> >> HELP >> >> My beast is acting up >> > >The nut that applies tension (friction) to the front wheel is >adjustable. Tighten it up a little. Mine did the same thing at first. It >needs to be a little tighter than you think it should be. I have had no >problems since. > > >-- >Tom Crawford > Tom is right! Adjust the fiction nut so that the nose gear returns slowly to straight ahead after defecting the wheel to the left and/or right and releasing the wheel. Bobby Muse N122B - Wimberley, TX mailto:bmuse@mindspring.com ---------------------------------------------------------------------- Subject: KR2S structural analysis From: HAshraf@aol.com Date: Tue, 7 Mar 2000 20:40:28 EST X-Message-Number: 5 I got this e-mail from Steve. I do not know where he got my address and whether he is trying to sell these services. Please contact him directly if your are interested. Haris Ashraf << Subj: structural analysis Date: 3/7/00 3:59:03 PM US Mountain Standard Time From: stivfer@libero.it (steve) To: hashraf@aol.com I'am a student in mechanical engeneering and i 've made a structural analysis on kr2s wings , engine mounth and control cinematism using software packges as mathematica and Nastran. Then i can offer a complete 3d model created in CAD (BENTLEY microstation95 and SOLID EDGE) of all components. If you are interested please contact me .Thanks Steve >> ---------------------------------------------------------------------- Subject: More Engine Questions From: "Dan Villeneuve" Date: Tue, 7 Mar 2000 21:20:04 -0800 X-Message-Number: 6 Again, all of this may sound stupid to all of you, but I'm new to this and still in the research phase. Now for my questions. All of the VW powered homebuild planes are based off from the stock 1600cc VW (some more modified than others), correct? The only real differences in the engines is the bore and stroke, correct again? If I am correct so far couldn't you build an engine with a bore of 94mm and a stroke of 82mm? Great Plains advertises 70hp on the 2180cc VW with engine specs of 82x92...in that theory couldn't this engine be built and come close to 80hp (or achieve it with a little more massaging)? I'm trying to find reasons to stick with the VW, but I'm leaning toward the Corvair engine and I would appreciate any help given. This all also brings me to another question. I have noticed the max speed of the KR-2S is 200mph, can the VW push it to that speed? Is that the max speed of the air-frame or the engine. If it is the air-frame and the VW can push it to that, why is everyone talking about going with the Corvair? Well, thats enough for now, thanks for any information ahead of time. ---------------------------------------------------------------------- Subject: Re: More Engine Questions From: "Parley Byington" Date: Tue, 7 Mar 2000 21:40:49 -0800 X-Message-Number: 7 Dan The Vne speed of 200 mph is due to the structure of the aircraft as designed, I have not heard of any VW that can pull the bird that fast straight and level. I have pushed mine to 200 mph in a slight power dive while checking for flutter and other abnormalities. This is to be done very carefully and in small increments, I used 5 mph increases and followed the instructions of some well trained test pilots and recommendations of the FAA handouts on the subject. The fastest I have achieved with my turbo charged 1835 VW was 185 IAS. I did not hold this speed for more than 10 seconds due to rapid cyclinder head heating. This speed was achieved at 4000 rpms and 41 inches of manifold pressure. Needless to say this is pushing the engine pretty hard. I normally fly at around 3300 to 3600 rpms and 33 to 35 inches of manifold. This gives me a speed of between 150 and 165 mph IAS. Hope these numbers help. Regards Parley (N54PB) parley@anv.net Henderson, NV -----Original Message----- From: Dan Villeneuve To: KR-net users group Date: Tuesday, March 07, 2000 9:20 PM Subject: [kr-net] More Engine Questions snip >Corvair engine and I would appreciate any help given. >This all also brings me to another question. I have noticed the max speed >of the KR-2S is 200mph, can the VW push it to that speed? Is that the max >speed of the air-frame or the engine. If it is the air-frame and the VW >can push it to that, why is everyone talking about going with the Corvair? >Well, thats enough for now, thanks for any information ahead of time. > >--- >You are currently subscribed to kr-net as: parley@anv.net >To unsubscribe send a blank email to leave-kr-net-17599G@telelists.com > --- END OF DIGEST --- You are currently subscribed to kr-net as: johnbou@ipinc.net To unsubscribe send a blank email to leave-kr-net-110995W@telelists.com