REFLECTOR:CONFUSION
Scott Derrick
reflector@tvbf.org
Wed, 16 Jul 2003 08:23:52 -0600
Alan's a good guy and knows a great deal but he's also got an ego as big
as the state of Florida. He's very attached to his ideas.
I completely agree that with a IO540 your climb performance will be good
either way.
But, for all around performance you can't beat a constant speed prop.
No way, no how. You can tune a fixed pitch prop to beat a constant
speed in one phase of flight: climb, flat out, etc.. But your not
building a racer. I wish I could afford a CS prop for my Std RG., I'd
buy it today.
> He recommended a three-blade performance prop made by Performance Props
> in Arizona. He said it should be put on a five inch extension and it
> will fit perfectly with the cowl he designed.
I'd recommend a Catto if your were going fixed pitch.
> He said the fixed pitch also helps with cooling because it can get
> closer to the big cowl openings on each side of the prop and it will
> actually ?suck out? air creating a cooling effect.
Maybe, maybe not. I think this kind of thing requires a 1,000 hours of
tweaking to get it right.
> He also said that the exhaust pointing straight out the back through two
> ports (bottom left and right) will actually cause a venturi effect
> inside the cowl ... which will force cool air to exit around it ? again
> aiding in the cooling of the engine.
Same comment as above.
Scott