Chain jumping

kernel_gadaffi

The chain still keeps jumping off the inner ring on my Felt Z100, it's a triple chainring and have seen some "chain catcher/keepers" made by Dog Fang, Krex and others that work but apparently only with doubles, is anyone running one on a triple and if so, which one?

The tube on my bike is 31.8.

Steve O'C

I had the same problem with my wife's bike, a Specialized Sirrus triple. Tried a Deda Dog Fang but I could never adjust it correctly, then got an N Gear Jump Stop which seems to be a much better design and works fine.

I got mine from here http://www.billys.co.uk/english/group.php?prod=chng-js

Ordered it online and it was delivered the next day.

Twostage

Can't you prevent it by adjusting the low limit screw ?

kernel_gadaffi

Can't you prevent it by adjusting the low limit screw ?

Nope, tried that, will keep fiddling with it and hopefully I'll get it sorted.

keef66

My 105 triple came with a Dog Fang fitted. Never dropped the chain off the inside.

kernel_gadaffi

I've just bought a Dog fang from Infinity Cycles and will fit it later, fingers crossed.

kernel_gadaffi

Nope, wrong size!

smidsy

If the front mech is correctly adjusted there is no reason for it to fall off the inside.

Does it do it consistently or is it just the odd time when changing gear (perhaps under full load) ??

kernel_gadaffi

It does it consistently, but today however, it hasn't done it at all, I've (very slightly adjusted) the low limit screw and it seems to have done the trick, I tried it the other day and it seemed to have no effect, bikes I think are like women, never the same two days running!!!