Chain skipping under pressure - new chain?

danielsbrewer

Hello,

I have a Specialized globe sport hybrid bike 2007. When I am in the "middle gear" (i.e. middle at the front and back) the chain "skips" when I apply a lot of pressure (normally when I start off at a junction). What I mean is that the chain loses grip for a bit and my pedal suddenly jolts to the floor.

Does this mean I need a new chain? or do I need to replace more?
What sort of chain do I need to buy?

Thanks

cjcp

Sounds like your rear gear cable needs adjusting/gears need a tune.

nicklouse

if it is all original and is a often used gear combo you may have worn this too far.

the free body drive system may also be on the way out.

To the LBS and expect to need to replace the drive train if it is the original.

0scar

I had the same thing on the gears I used the most (3x6 and 3x8). It can be quite dangerous to keep using them as they can chuck your feet off the pedals and onto the road. As this happens when you are using them the hardest you will straddle the top tube and come off. If that happens on Elephant & Castle roundabout you will die.

Check for chain stretch or a worn cassette and replace what needs replacing.

the_hundredth_idiot

cjcp wrote:

Sounds like your rear gear cable needs adjusting/gears need a tune.

+1 A minute or two of fiddling could save you a lot of pain (I went over the handlebars when my gears slipped a the wrong time ) and save an expensive trip to the bike shop. Worth checking this before taking mroe dramatic steps.

supersonic

Check the condition of you middle chainring.