VW Reality
Bill Daniels wrote:
Well, I'm not going to build a Hyabusa flat 8 but if I were, I'd be thinking
about a planetary gear PSRU. Planetarys have a lot of gear tooth engagement
and are happy with high RPM sun gears. A fairly small planetary can get 4:1
reduction which would reduce 9000RPM to a very usable 2250.
The propeller thrust bearings would be on the ring gear - the engine
crankshaft would see only torque loads. This little screamer would produce
about 280HP in stock trim from an engine about the size of an O-200.
Bill D
I think we would be back to the same problem, the engine can't dissipate
that much heat. Motorcycles don't run at peak output any more than car
engines do and the sustainable power level would be considerably lower.
Not that a Suzuki V8 wouldn't be fun, I don't think it has what it
takes to be a good aircraft engine.
The more I think about it, the less I think any auto engine conversion
is going to do the job well. I'm looking for an old but rebuildable
airplane engine that I can rebuild rather than spend all my money on an
engine I can't trust. I don't mind it not having the certificate and I
don't think that's all that important on an home built anyway.
Tony
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