Hi,

I'm trying to adjust the low limit screw on my rear derailleur. I have tightened it as far as it can go and the chain is still falling off the innermost gear into the spokes. Does anyone have any recommendations on how to fix this?

I have a Trek bike with one of the those massive megadrive gears if that makes any difference.

Thanks

Perhaps you have too much cable tension. You might also want to check the derailleur hanger and make sure it's not bent.