Chain Dumping off small front chainring

[Rickshaw Phil]

Another vote for it being a worn chainring. This was the issue when I last had the same problem.

 

[PpPete]

Dog fang will not stop it dropping off.

My experience also.
I use one of these. http://www.ebay.co.uk/itm/New-KREX-CNC-Chain-Catcher-Clamp-For-ROAD-MTB-31-8mm-Black-/140857146913

 

[boydj]

I had this problem, but only when I was already using either of the two largest cogs at the rear. Anticipating that the granny ring might be needed and changing to that before going too far up at the back usually prevented chain drop. I have installed a chain-catcher to prevent the problem completely. No amount of tweaking the limit screw could avoid the problem.

 

[woohoo]

Co-incidence or otherwise, I haven't had a chain drop off the small chainring after I fitted a dog fang. It had happened a few times before. The guys in my LBS tell that some manufacturers e.g. Bianchi fit them as standard.

 

[derrick]

Co-incidence or otherwise, I haven't had a chain drop off the small chainring after I fitted a dog fang. It had happened a few times before. The guys in my LBS tell that some manufacturers e.g. Bianchi fit them as standard.

If you derailier is set up right you don't need a dog fang, the dog fang will protect your frame if the chain does drop of.

 

[mrbikerboy73]

+1 ^^^

 

[Tom B]

Dog fang will not stop it dropping off.

MIL got a dog fang, chain just chopped through it and it got in the way of putting it back on in the middle of a sportive.

I'd rather cure the issue of it coming off... New granny wheel would be my best bet.

 

[Racing roadkill]

Don't use the granny ring, works for me.

 

[Tom B]

Don't use the granny ring, works for me.

My "fix broken things" Ocd would not live with that!

 

[woohoo]

If you derailier is set up right you don't need a dog fang, the dog fang will protect your frame if the chain does drop of.

^^^ -1

 

[Fifelad]

New chain rings to be fitted...........result to follow watch his space.......

 

[jagman.2003]

Whilst on a MTB ride commute a colleague had his chain constantly falling off due to a chain with a damaged link.
Maybe worth looking for a link out of line.

 

[Fifelad]

Success folks, for now anyway, 120 odd miles done and no chain dump after new chain rings fitted.