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#1
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VW Redrive Mounted on the Case's Generator Pad?
Philippe's moteur--- http://mdlaurent.free.fr/index.htm
reminds me of the Smith fellow from Kansas who came to Oshkosh in the 90's* with his own design low-wing homebuilt and flew it constantly in the ultralight area. It was a 2-place. That little tube and rag airplane would really perform. Everybody who saw it was fascinated. The welding looked like it had been done by a farmer's stick-welder. The VW engine had a kevlar belt redrive, with several belts turning on a jerry-built contraption fastened to the generator mounting boss. It was in the air more than all the other ultralights. It seems like it had a nosewheel. Not taking anything away from the builder/designer. He's got to be sharp as a tack. Anybody remember that guy and his airplane? *Maybe he's still attending, with his funky little homebuilt. But I figured that case would crack with all that load there at the generator mount. Wondering if it ever did. And what ever happened to his design and to him. In the 80's and early 90's I used to fly a J-6 Karatoo (designed by Jesse Anglin) with a Soob & kevlar belt redrive. It was very smooth and fun, but not yet dialed in-- wasn't getting enough rpm's --- when the owner sold it firewall forward and replaced it with an 1835 cc VW engine with a Max Peters redrive (kevlar belt) and a 78" prop. (I had been flying with the owner's trophy wife when the Soob engine did one of those scary little hesitation burps, and the aircraft mushed, almost into some pines. He was on the ground watching in horror.) Now this latter combo of taildragger and hi-revving VW really had some oomph and would outclimb and outrun my Taylorcraft. But it vibrated something awful. Sooner or later something was going to come apart. The owner didn't have it cowled and baffled right so it would seize up, from overheating, sometimes in a climb. Owner finally gave up before getting IT dialed in and sold it to a huge man who couldn't fly it because he couldn't get in it. So it sat outside on a sod field where the prop rotted off and it still sits there, looking like a plucked chicken. I still have a brand new Peters redrive for the VW, complete. It is beefy. Wanna try it on something? I bet the vibes can be solved. The J-6 only vibrated at high power settings, where the engine was turning about 3300 rpm. If you backed it off about 100 rpm, the vibration would stop. I flew the Karatoo about 100 hours, all over the mountains of WNC, and to air shows to show it for the owner, places like Hickory and Franklin and Spartanburg. Never had to land it in a cow pasture, but do remember eerie silence --- the engine seized over Lake James. Memory of dreading the swim. As it turned out, we had just enough altitude to bounce it off the beach onto the runway at Marion, NC's sod airfield. That was the last time I flew it. I kinda miss the old gal, although her wooden slab seat was a tailbone-buster. One time I got her into a departure stall and she came right out of it, and none too soon. Somebody had fiddled with her one mag and had retarded the timing instead of advancing it. I kept pulling back on the stick thinking, "Why the hell won't this thing climb?" Until she let go and dropped a wing. That was the second time I got out of an airplane and kissed the ground. Happy Holidays. |
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VW Redrive Mounted on the Case's Generator Pad?
Not taking anything away from the builder/designer. He's got to be
sharp as a tack. Anybody remember that guy and his airplane? This what you are remembering? http://www.culverprops.com/ |
#3
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VW Redrive Mounted on the Case's Generator Pad?
Yep, Leon, I believe that's either it or a derivative. Thanks for the
link. |
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VW Redrive Mounted on the Case's Generator Pad?
Thanks, John. Yes, that's it and it brings back some great memories.
Great photos too. |
#6
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VW Redrive Mounted on the Case's Generator Pad?
On Fri, 25 Nov 2005 01:05:29 GMT, John Ousterhout
wrote: I believe that Gene Smith of Valley Engineering built it. He uses it as a demo for his VW engine conversions with the Valley Engineering Redrive. That's what Dick Starks switched his Taube to, after the crash with the A-75. http://www.culverprops.com/engines.htm He also had an article in KITPLANES about it, a few years back. Ron Wanttaja |
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VW Redrive Mounted on the Case's Generator Pad?
"Ron Wanttaja" wrote That's what Dick Starks switched his Taube to, after the crash with the A-75. What was the cause of the crash with the A-75? Engine failure, if so, what? T(h)anks again! -- Jim in NC |
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VW Redrive Mounted on the Case's Generator Pad?
On Fri, 25 Nov 2005 19:14:52 -0500, "Morgans" wrote:
"Ron Wanttaja" wrote That's what Dick Starks switched his Taube to, after the crash with the A-75. What was the cause of the crash with the A-75? Engine failure, if so, what? If I dismember correctly, the fundamental problem was that the A-75 just didn't have enough oooompppph for the draggy Taube. Can't remember if the Continental just overheated or if someone mushed it into the corn. In either case, he swapped it for a VW with the Valley Engineering PSRU and is now turning a 96 inch diameter prop with 60 inches of pitch. He claims it provides 70% more thrust than the old engine. Hmmm, lengthen the gear legs on the Fly Baby.... :-) Ron Wanttaja |
#9
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VW Redrive Mounted on the Case's Generator Pad?
"Ron Wanttaja" wrote If I dismember correctly, the fundamental problem was that the A-75 just didn't have enough oooompppph for the draggy Taube. Can't remember if the Continental just overheated or if someone mushed it into the corn. In either case, he swapped it for a VW with the Valley Engineering PSRU and is now turning a 96 inch diameter prop with 60 inches of pitch. He claims it provides 70% more thrust than the old engine. Hmmm, lengthen the gear legs on the Fly Baby.... :-) Wow! It is hard for me to get my brain wrapped around the fact that a VW could be stronger than an A-75, even with a redrive! I always heard that a VW was only good for around 40 horsies for extended periods of time. Can't a 75 in good condition beat that? It would make more sense to add a redrive to the 75, than go down to the VW. Has it ever become common practice to put redrives on pancake engines? (other than the 470 geared from the factory, and it's ilk) I don't ever recall seeing one with a redrive, or hearing about one. What is the displacement of the A-75, anyway? If you don't know off the top of your head, just say so, and I'll go a-googlin'! g -- Jim in NC |
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