Talk:V911 Common problems and solutions/@comment-69.249.34.189-20140130053510/@comment-50.136.180.46-20140201232537

pinion may be slipping on motor shaft. If you can move the pinion up and down the shaft, it is probably too loose. a small drop CA glue or Loctite may fix the problem. Careful not to get the glue in the pinion teeth.