Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

on a Mongoose Motivator, when I spin the pedals the wheel does not engage. I removed the chain and lubricated it but it still does not work.

share|improve this question
Does the cassette turn? – joelmdev Aug 17 '13 at 18:54
If the chain is properly installed and the rear cog is turning with the chain then something has come apart inside the rear hub. You need to take it to a bike shop. – Daniel R Hicks Aug 17 '13 at 21:59
From a quick Google, the Mongoose Motivator appears to be a BMX bike. If the back gears are spinning but the wheel isn't moving, then there's probably a problem with the freewheel. Perhaps the pawls are stuck. – Kibbee Aug 18 '13 at 11:45
The pawls might also be worn or powdered. Does the freewheel make the typical ratcheting sound if you spin the wheel? – arne Aug 20 '13 at 8:07

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.