Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the January Giveaway for a Trifox Carbon MTB Riser Handlebar


Another chain skipper!
#1
Hi Guys, as i couldn't find my exact situation i thought i'd best post up.

i recently replaced my chain and have since been having a right nightmare when riding as it keeps jumping forward on every downstroke.

the chain isn't skipping gears or anything it is just lurching forward, i have checked for loose cranks, bottom bracket etc and they are all fine. when trying to diagnose the problem thou it is very difficult as the problem only appears under load. when i was testing it out thou i could look down and see that the rear derailleur lowest jockey wheel was pulling forward 2-3 inches and then suddenly jerking back and this was what was causing my chain to skip and making the bike unridable really. i commute 30 miles every day.

i rang evans cycles and spoke to the bloke there who said it was because i hadn't replaced my rear cassette at the same time as replacing the chain but i doubt it is the cassette as that was working perfectly fine with my old chain...

any ideas guys as I'm properly stumped here....
  Reply
#2
Chains and cassettes tend to wear into each other and it is quite common to get skipping after replacing one and not the other as the cog teeth and chain don't line up anymore. This isn't the only possible reason, but it is very common. I suspect the jockey wheel movement is being caused by the chain slipping and not the other way around.
  Reply
#3
Dave is correct
Nigel
  Reply


Forum Jump:

[-]
10 Latest Posts
Trifox carbon frames
Today 01:33 AM
My Bicycle memories
Yesterday 04:19 PM
2021 Pro Road Cycling
Yesterday 04:18 PM
Bicycle renovation suggestions.
Yesterday 03:30 PM
Can someone identify this Bottom Bracket...
Yesterday 01:21 AM
11-42 cogs on Road bike?
01-24-2021 12:24 PM
Big Basso, Tiny Colnago
01-23-2021 08:11 PM
NewBikeShopper (intro & opinion request)
01-20-2021 01:57 AM
1983 Trek 720
01-20-2021 12:23 AM
brakes
01-19-2021 11:25 PM

[-]
Top 5 Posters This Month
no avatar 1. Criminal
19 posts
no avatar 2. RollOn
6 posts
no avatar 3. Yevhen
5 posts
no avatar 4. NewBikeShopper
4 posts
no avatar 5. Jon Morgan
3 posts