Steve Wittmans "Olds" V8 Tailwind Airplane
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GO grandpa !!!!!!!
2 years ago 4
All Comments (29)
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Two things got me thinking,why doesn't someone build a "stroked" v-8 with an R-V cam and bring down the RPM's to 2800 ,that should be easy ,and 2nd no one in air boats seem to be wringing their hands over using an automotive conversion that's direct drive,yes I know a planes in the air and a boat is not but their are more similarities than differences.
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@mctim64 what kind of problems was he having? and thanks for the info. that is an intriguing conversion.
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Does anyone out there recall hearing of incident involving tailwind where lost aileron function due to mechanical breakage and pilot flew and landed using rudder and throttle, it may not have been tailwindthough. i bet was pucker factor of 10
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damn thats a fast tailwind
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is there anyway we could get some info on the engine and conversion?
straighttailpilot 4 months ago
@straighttailpilot
Aircraft Spruce Specialty sells plans on how to convert the Olds engine.
mctim64 4 months ago
@mctim64 no, I know that. I just meant what engine is used. is it a car engine? what is it comparable to? an 0320? 0360?
straighttailpilot 4 months ago
@straighttailpilot
It's an Olds 215 aluminum V8 from the early '60s. This particular one is a 267ci using a 300 Buick crankshaft. I would guess the HP to be like an O-360. The prop is direct drive But I believe it is a cut down C-150 of 60" dia and is turned at a higher rpm than most aircraft engines. When I was thinking of building one I had two Olds engines but after hearing stories of Mr. Wittmans ignition problems with his I thought an O-320 might be a better choice.
mctim64 4 months ago
@straighttailpilot
The 215 Olds in the car came in 150 hp with a 2bbl, 185 hp with a 4bbl and 215 hp with a 4bbl and turbo charger. These ratings were at much higher rpm than you would want to spin a prop. I would think a 267ci with a Marvel up draught 1 bbl turning 3200 rpm might be good for 160+.
mctim64 4 months ago
Inverted v8-was it a direct drive or reduction drive I wonder? Anybody know?
MrZeddy100 6 months ago
@MrZeddy100
Direct drive, I have the plans and prints for the mods.
mctim64 6 months ago