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Permalink Reply by Tony Heaton on September 11, 2012 at 3:44pm

Did you visually inspect all propellers for cracks or other defects before use?  Did you check the propeller adapters for sharp protrusions that could be cutting the prop hub?  Are you over tightening the prop adapters and crushing the prop hub?  Are you using the correct shaft adapter?  Are the propellers that break always on the same motor?

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Permalink Reply by lot on September 12, 2012 at 11:21am

Hi, thanks for your response!

Yes, I inspect the propellers but I can't see anything, also the prop adapters looks normal. I didn't balanced the propellers.

The propellers brake from different motors. I 'm thinking that maybe I over tightening the prop adaters as you suggest.

I attach a picture if it helps.

Thanks!

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Permalink Reply by Tony Heaton on September 12, 2012 at 11:44am

The picture leads me away from the over tightening theory. The breaks seem to be very smooth.  I'm leaning towards defective propellers.  I'm not an expert in injection molding of plastic but all of those breaks look very suspicious to me.

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