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


Slippage!
#1
I am a novice bike mechanic and need some of your expert advice. When I ride under, even minimum, pressure the drive train slips until I am pedaling with no forward momentum. Is there a simple solution to this that I am missing???
glrcoach

  Reply
#2
Can you see where the drivetrain is slipping? If your derailleurs are set up correctly ( http://bikeride.com/part/derailleur/ ) then it could be a stretched chain (see: http://bikeride.com/chain-wear/ or http://sheldonbrown.com/chains.html ). Did you change anything?

  Reply
#3
The pedals turn and the chain moves, as it should, but there is no pull on the back wheel cassette. It's an old (10yrs) Saracen MTB which was working fine until this suddenly started doing this. I've cleaned and dismantled the cassette and it looks okay. I wondered if it was a bottom bracket problem? The chain is good.

  Reply
#4
Thanks for the quick reply, Joe.
The pedals turn and the chain moves, as it should, but there is no pull on the back wheel cassette. It's an old (10yrs) Saracen MTB which was working fine until this suddenly started doing this. I've cleaned and dismantled the cassette and it looks okay. I wondered if it was a bottom bracket problem? The chain is good.

  Reply
#5
Sounds like the freehub on the rear wheel may have given out. This is the cylinder that the cassette slides on to. It has the ratchet that allows you to coast, but catches when you pedal. If so, you can try dripping some lube into it as it might just be gummed up.
The other common issue is the chain slipping over the top of the teeth of the cassette, but what you describe doesn't sound like that. Either way, not a bottom bracket issue. That just allow the pedals to rotate.

  Reply
#6
Thanks Dave. Think I agree with you about the freehub. Can you buy and replace or is a new rear wheel the solution?

  Reply
#7
That depends on the hub. If you have a Shimano freehub than you can exchange the freehub bodies. Other brands can sometimes be a bit tricky.

  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
4,356
08-31-2020, 01:52 AM
Last Post: Jesper
 
14,367
12-23-2013, 04:58 PM
Last Post: cny-man
 
10,815
04-24-2011, 02:54 AM
Last Post: Cbusbikenewb
 
9,049
08-25-2009, 09:12 AM
Last Post: Joe_W
 
12,767
03-31-2009, 03:32 AM
Last Post: aitch

Forum Jump:

[-]
10 Latest Posts
Safest bike helmets
Yesterday 10:13 AM
Braking: What is your GoTo braking metho...
Yesterday 09:54 AM
Tour de FRANCE 2025
Yesterday 08:57 AM
Tubeless vs. tubes: What are the pros an...
Yesterday 02:23 AM
Pros & Cons of presta valve vs schrader ...
07-10-2025 11:58 AM
Raleigh Sports Serial Number
07-09-2025 11:10 AM
The great thing about trikes
07-09-2025 10:12 AM
Full Moon Ride - Sunshine Coast
07-08-2025 10:46 PM
Continued learnings from bikepacking
07-08-2025 10:40 PM
What are the pros and cons of using a 26...
07-08-2025 10:35 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Flowrider
23 posts
no avatar 2. GirishH
22 posts
no avatar 3. meamoantonio
18 posts
no avatar 4. enkei
15 posts
no avatar 5. Jesper
14 posts