Why Does Bicycle Chain Keep Coming Off. In the first half dozen rides on a new bike your shift cables stretch the most. Hippley explains It takes cable tension to open a derailleur which shifts your chain between gears.
When riding you put a lot of pressure on your chain. This stress causes the chain to pull off the sprocket. First however lets look at the bike setup and be sure it is correct.
Lastly the length of the chain can cause the chain to pop off if it is too long or short.
There are many causes to a bike chain coming off. Modern one-by drive-trains with a single chainring use double-wide chainring teeth profiles which are much better at retaining the chain. As we move the chain away from the centre line of the bike the pedalling gets harder When we talk about how many speeds a bike has Bike Gears Explained Yellow Jersey 6 Different ways your Bicycle Chain keeps coming off. It can also be cause by a new chain not being worn in enough worn down sprocket teeth having too tight of a tension or having the wrong size of chain installed.
