What-Now-Ski
Member
Two screws from the middle of the propeller hub sheared off and nicked the leading edge of my composite Catto propeller. The plans call for AN526 screws with a nylon washer, however AN515-8R8 screws with a 960L washer were used. The plane (RV-7) & engine (IO-360) has 40 hours on it and the highest RPM reached that day was 2750 RPM.
My question?s are:
1. What caused this and how do I prevent it from happening again?
2. How do I repair the leading edge of the prop? (A call to Catto has already been placed, but no answer yet)
[URL=http://img707.imageshack.us/i/frontleadingedge.jpg/]
[/URL]
[URL=http://img576.imageshack.us/i/3ofthewayout.jpg/]
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My question?s are:
1. What caused this and how do I prevent it from happening again?
2. How do I repair the leading edge of the prop? (A call to Catto has already been placed, but no answer yet)
[URL=http://img707.imageshack.us/i/frontleadingedge.jpg/]
![](/community/proxy.php?image=http%3A%2F%2Fimg707.imageshack.us%2Fimg707%2F1070%2Ffrontleadingedge.th.jpg&hash=1db92ad420c6846485c0cc1dd5d243f7)
[URL=http://img576.imageshack.us/i/3ofthewayout.jpg/]
![](/community/proxy.php?image=http%3A%2F%2Fimg576.imageshack.us%2Fimg576%2F5300%2F3ofthewayout.th.jpg&hash=a710e7d0825ab17576c486b95fb5fff8)