luciens
Second Officer
United States
Offline
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Resurrecting this thread, as my P4P has these same stress cracks on all 4 arms now after maybe 30 flights. The problem, though, is obviously faulty design - the motors are hard mounted to the airframe with no shock mounting. Compounding it is the super stiff and inflexible shell and arms. Anything that spins a prop has to have some form of "give" in the mount; vibration and Coriolis force, etc., has to go somewhere if there isn't something to absorb it in the installation. All you folks familiar with full scale aircraft design know what I mean.
The cracks are a kind of "built-in" shock mounting that sort of developed by themselves, I guess you might say.
Might be an opportunity for a 3rd party to develop a soft mount for the motors on the P4 series? I'm thinking about something myself, but mine is already damaged and wouldn't be a useable test bed.... |
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