Feigao Bearing Question
 

I am wondering if I were to replace the bearings inside the Feigao motor and replace them with something like these would I be able to push the limits of these motors a little further or would they atleast be more efficient?

http://www.offshoreelectrics.com/pro...5c-yzz%235-nb2

Higher quality bearings are always better for more efficiency, but there's only so much you can do to improve overall efficiency. Gains will probably be small. If anything, it will heat up slightly less.