Belt line

Belt Drive

Belt line

Tolerances and checking belt alignment

Check the belt alignment before every ride to ensure that the timing belt is running correctly on the sprocket.

If you notice the timing belt slipping off the sprocket while checking the belt alignment, the timing belt must be replaced no matter what, as the carbon fibers in the timing belt may already be damaged.
 
  1. To do this, position your bicycle or e-bike in such a way that the rear wheel can rotate freely, e.g. by having another person help you by lifting the back of your bicycle or e-bike by the frame.
  2. Make the rear wheel spin by turning the pedals several times.
  3. Stand behind the bicycle or e-bike and check (visual inspection) whether the timing belt is running in a constant straight line that is centered on both sprockets. The timing belt must be aligned as follows:
    1. The timing belt slightly touches the flanged wheels at the front and rear sprocket.
    2. Under no circumstances may the timing belt extend beyond one of the sprockets.
    3. The timing belt may not run against flanged wheels at an angle.
  4. Contact a bicycle retailer if you notice any discrepancies.