View Single Post
Old 10-20-2013, 09:19 AM
  #1  
noffey
Member
My Feedback: (2)
 
Join Date: Feb 2009
Location: Albany, OR
Posts: 30
Likes: 0
Received 0 Likes on 0 Posts
Default grinding noise in outrunner at mid rpm

I have a Tacan Bigfoot 60 outrunner, that has a grinding noise about midrange in rpms. From 0-4000 it is smooth. From 7000 up it is smooth. The mid range is very noisy and grinding like it is destroying itself. Is it bearings, or maybe bent shaft?