Dale Williams wrote:

I'm finally getting ready to assemble rx-7 to go into my w8 tailwind. Would
like to use my existing motor mount and gear legs with modifications to use
rx-7. This would mean a 60" diameter prop. I've been flying this prop/90 hp
cont. combo for 40 years. I really hesitate to increase gear length because
of the excellent results I have had in the past.

Please sign me up for  acre .

Thank You,

Dale Williams

Wow a 60 inch prop should turn 8000 engine RPM for take off using a 2.85:1
gear box. With a p-port that would be close to 275 HP. Quite spectacular.
Paul Lamar

And if you don't enlarge the ailerons and rudder, your first takeoff could
be really spectacular :)
Bulent

I don't really understand increasing the aileron size?
Dale

Tracy Crook has a bit of a problem taking off in his RV4 with a 76 inch
prop and a 210 HP rotary with a 2.85:1 gear box. The airplane wants
to head for the fence unless you hold it on the ground for a while.

Paul Lamar
 
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