Author Topic: Chain and sprocket periodicity  (Read 603 times)

Chain and sprocket periodicity
« on: July 22, 2019, 08:45:38 pm »
OK, so the track bike has 96 links of chain (48") and an 18T sprocket.  This means that, regardless of chainring size, the same sprocket teeth hit the same bit of chain for every 3 laps the chain makes and (importantly) the inner links of the chain, which are the ones that make noise against the sides of the teeth, always hit the same nine teeth.

If your chain is suddenly noisier after a wheel or chain removal, try refitting the wheel so the chain is one tooth along on the sprocket (use the master link as an index, and any engraving on the sprocket).  it may suddenly become quiet again.
And Darkness and Decay and the Coronavirus held illimitable dominion over all.