Strange monster stock problem
I'm having a very strange problem with my monster stock. It makes a screeching noise when you run it, and if you spin it by hand (only if you spin it pretty hard). I checked that it was shimmed correctly a bunch of times because I thought it was one of the shims scraping against one of the bushings. After having no success with shimming it differently, I took all the shims out to make sure that that was the problem. When run very slowly it runs normally, but once you apply any more throttle the arm shoots all the way down in the can and starts scraping on the bushing pretty hard making a screeching noise. What is causing this? When I broke in the brushes I didnt have this problem, although it wasn't getting much power so it probably wouldnt have happened anyway. It started when I put the motor in my car and gave it some throttle with the wheels off the ground just because I was curious to see how fast it spooled up compared to my 19T. When I did this the bushing in the endbell started coming loose I pushed it back in but I figured that the loose bushing was the problem. Now that I recall, the pinion would stick out farther when it made the noise, so the same thing was happening. I secured the bushing by putting a tiny bit of CA in the endbell where the bottom of the bushing rests (not the sides because that could cause misalignment) and then I put the bushing on the arm and tapped the motor together.
Any help would be appreciated
(I also put this in the stock motor forum but I need to run the motor tomorrow and Im not sure I will get a response soon enough, with it there.)
Last edited by AE Racer; 01-27-2005 at 06:30 PM.