Doug,

What does a 76" leave as clearance - 6"?

What is the 3 blade clearance?

What is recommended ( in the real world) in tricycle and tail dragger?

George (down under)

 

Ed Wrote:

 

"When He put my 74x88 Performance Prop on he got as high as 6100 rpm one time but each time got at least 6000 rpm...".

 

Sam's prop actually measured 76 inches long (if I remember right) which is quite a bit longer than I would want to run on a nose gear equipped RV.  A 76" prop leaves very little clearance off the ground and will undoubtedly result in a considerable amount of blade tip erosion over time.  

 

If my IVO prop doesn't really work out I think I will give the CATO 3 blade version a try since there are quite a few RVers flying it and it will get the tips off the ground a bit more...at a cost of a couple knots of top end of course!

 

Doug Lomheim

RV-9A, FWF / Canopy

OK City