Why Does My Bike Keep Jumping Gears. When I stand on my pedals the chain keeps jumping on. When the first cog shifts correctly continue to move through the gears in your cassette fine tuning with the barrel adjuster as you go.
Often a skipping bike chain is due to a cable stretch. 2nd gear was so badly worn that it would jump teeth. In the first few rides on a new bicycle the cables stretch the most.
It happens all the time and there are plenty of reasons for it.
Often a skipping bike chain is due to a cable stretch. First of all and to save a lot of time effort and money do an oil change and look to see if there are any visible signs of metal. 2nd gear was so badly worn that it would jump teeth. I purchased a 18 speed bicycle with shimano gears having revo shifters yesterday.
