My Mountain Bike Chain Keeps Slipping. The chain may be slipping due to an increased buildup of dirt or grime; a basic cleaning and lubrication procedure will often alleviate the slipping problem. Abby Hippley, mechanic, bike builder and former demo driver for Santa Cruz Bikes says, "Your chain—more accurately the cables that connect your shifters to your derailleurs to move the chain.
Look over the chain for excess wear or bent links. To tighten a loose chain on a hub- or fixed-gear bike, first use a wrench to loosen the axle nuts on the rear wheel. Most modern mountain bikes have derailleur gears.
In this article, I will try to discuss how to fix a bicycle chain that has fallen off and I hope it will help you a lot and gives your possible solution.
However, if this is the issue, replacing the derailleur will stop the chain slipping.
Fixed you chain slowly pedal the bike with one hand. A worn chain is essentially the stretching of the chain so. A worn down chain is the third cause of slipping.