Quote Originally Posted by herman pahls View Post
I have been warned that my WD prop may be exceeding the Rotax recommended mass moment of inertia (MMI) and causing premature damage to the gear box and sprague clutch.
So I started shopping for props with less MMI.
Hi Herman,
Have you measured the MMOI of your current WD prop configuration to know if you're inside of the 6000 Kgcm^2 limit? I'm not sure why prop manufacturers don't provide this information, but it doesn't seem to be widely available. I've heard that a three blade 68" taper tip is under.