Quote:
Originally Posted by Essex2Visuvesi
Its the black gear so 0.5 pitch, pretty sure they are the right pinions as they came out of a tamiya packet yesterday lol 
the noise seems to be coming from the belt pulley shaft, tho i might swap out the spur gear for a new one, just to be sure |
one of your shaft bearings could be worn out and have too much play causing the gears to not mesh properly.