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03.14.2010, 02:15 PM
We found that the standard size 3.17mm shaft did not hold up well in our 550s, so we retooled with the 5mm shaft/bearings. Now, the HVs hold up very well on 2S in the 4x4s.
Some motor companies have holes in the motor cans or internal fans because their motors run very hot. We prefer closed cans because debris inside the cans causes more problems.
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