Thread: New Product Change Sun 12 blade 90mm
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Old Nov 19, 2012, 06:11 AM
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Canada, ON, Burlington
Joined Jan 2009
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You need one flat spot to keep the rotor from changing position on the motor shaft. If you have a perfectly dynamically balanced rotor and it twists just a few degrees it will be out of balance, sometimes quite a bit. As I have stated before, try the adapter in all 4 possible positions on the one flat spot to find the straightest position. If the adapter has any play then epoxy is needed to steady it in one position.
TN I think your adapter may have twisted on the motor shaft causing the imbalance that made the blades rub.
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