Ming the Merciless
There is no mercy
- Location
- Inside my skull
Sounds like the OP just had a badly adjusted front mech. It shouldn’t have been regularly dropping onto the BB.
How To Avoid Dropping Your Chain When Changing Down On The Front.
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matticus
Guru
You can make one from a chunky-sized zip-tie around the seat-post. Trim to length, then optionally tune by angling the cut end.
Lighter than the commercial ones
Lighter than the commercial ones
- Location
- London
Big fan of dog fangs here. I gouged a serious amount out of a nice ally dale frame with a few drops. Now fit them to my steel builds.
A dahon sports bike with a 3 speed hub linked to a 7 speed rear mech with just a single big front ring used to drop the chain all the time off the front. where no changing went on. Sorted that with a dog fang. Had the idea that this was a built-in issue as I noticed that dahon fitted one as standard on later models.
A dahon sports bike with a 3 speed hub linked to a 7 speed rear mech with just a single big front ring used to drop the chain all the time off the front. where no changing went on. Sorted that with a dog fang. Had the idea that this was a built-in issue as I noticed that dahon fitted one as standard on later models.
- Location
- London
Ta.
But ha, that's what I know as a dogfang - I thought the reference was to some device which allowed the mech to maybe handle a bigger range encompassing a smaller front ring than it might normally handle. I got nattering to a bloke on a ride a while ago who had a massive drop/range on his front mech and was surprised that it was possible. So I thought maybe he had been using some clever device.
Would probably have benefited from a narrow wide chainring in the first place.
matticus
Guru
I don't understand why these work, but having recently fitted one to my "1 by" commuter, I've been amazed at their effectiveness
- Location
- London
Sorry, don't know what one is. You may well be right, whatever it is, dahon somewhat notorious for chucking clever bits together without adequate testing.
fossyant
Ride It Like You Stole It!
- Location
- South Manchester
Narrow/wide chainrings only work on 1x drivechains. The wider tooth is aligned with the link that has the outer chain link, narrow tooth for the inner.
matticus
Guru
Really?? Does that mean it's just luck that I installed it right?? Happy days!
You can't install them incorrectly, the chain won't engage unless with the correct teeth.
