I could swear that I change it from 15 to 10 degrees, but can't find a record of doing that.  I also noted that it took quite a lot of throttle to get 4000 rpm for the video tests, so I'm thinking I never did change it.  Can't wait to try it with a more reasonable pitch. 

Rusty (gotta go fly the Wauchula gyro now)

This could just be silly, but how about reducing the torque the engine can produce at lower revs, by backing off the timing and over-leaning the injection system. Once through the problem RPM, then back to ideal power settings. Sell the gyro. We raced on 20 degrees

BTDC both leading and trailing for years. Idle settings as low as 13 degrees leading and 5 ATDC trailing have been used.

 

The idea of running with no pitch was to eliminate blade stiffness as a part of the problem.

 

A friend had one of those props on his ultra-light and it touched the chassis on run up, where the wood prop of the same diameter did not.

 

 He cut off two inches and all was well. But they are very flexible.  

 

Lynn E. Hanover

 

 

 

 

 

 

 

 

 

 

 

 

Sell the Gyro