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

New: Take part in the July Giveaway for VTUVIA SN100 Camouflage Fat Tire E-Bike $1679


Chain slipping on a self-repaired bike
#1
I'm stuck with a problem of chain slipping on my old bike that i wanted to fix myself.

I changed the whole drivetrain and maybe this is as simple as a mismatch since i have about zero experience in bike maintenance, i tought you would know for sure.

Here are the components i chose to put on based on 8 speed compatibility and cheapness:
Front Derailleur: Shimano Acera FD-M360-6
Rear Derailleur: Shimano Acera RD-M360-SGS
Front Chainset: Shimano Acera M361 triple set square taper (42-32-22)
Cassette: Shimano Acera HG41 (11-30)
Chain: Sram 8 speed PC850
Stock 8 speed shifters (replaced wires)

To be more precise every rear gear tend to make more or less my chain slip forward when i press the pedals (even moderatly), being a bit more slippery at the smallest cog then at the middle cog.
Slipping happens as regular as clockwork, always after the same amount of pedaling.
I have no problems with staying in speed or with shifting (altought my tuning could be better) and only find answers for that when i try to google my way out of this slippery chain problem.

Could it be:
-inaccurate rear derailleur alignment?
-chain has one excessive link?
-mismatch in components?
-rough rear indexing?

Thanks for any advice.
  Reply
#2
Go here and make sure your derailleur is adjusted properly. http://www.parktool.com/blog/repair-help/rear-derailler-adjustments-derailleur
Also make sure your derailleur hanger is straight.
Craig Domingue - East Texas Hick
  Reply
#3
Need a better description - under what conditions does it slip - front/rear combo(s), pedal pressure, shifting to larger or smaller cogs?
  Reply
#4
Alright, this topic could be closed because will eventualy bring that bike to a pro since i almost finished to waste it.

Thank you for your answers cradom and cny-man.

I checked the (rear) indexing which was already good, every gear went up and down smoothly and stayed in place.
I could not check the rear derailleur alignement since dont own the proper tool, so got the bike out for a test run.
Since i had no trouble shifting on the rear cogs i planned a skipping test on every gear to bring more details about my problem.
At that point i went to the speed 1-1 and started pedaling while hitting the brakes to stress the drivetrain and see how it would skip, but it didnt, the chain broke open and i quickly noticed the rear derailleur was against the rear cogs as the hanger was badly bent inward.

I'm not sure i want to replace to hanger and finish the tunnings myself since this repairing experience is getting worse and worse.
  Reply
#5
If you post more details please don't describe gears as "1-1." We need either tooth counts (48-13) or relative position/size (smallest rear cog, 3rd rear cog in, large chainwheel (front) etc.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
3,223
12-01-2020, 02:10 AM
Last Post: Jesper
 
8,226
06-17-2013, 05:25 AM
Last Post: capner2112
 
7,961
06-02-2012, 02:15 PM
Last Post: xerxes
 
8,307
04-13-2012, 08:44 AM
Last Post: Jarvan2011

Forum Jump:

[-]
10 Latest Posts
Weak spring tension on the derailleur wi...
Today 12:25 AM
Woodsplitter in Pittsfield, Vermont
Yesterday 06:19 AM
New Stator For My Ride1up Core 5
08-10-2022 08:49 PM
Jumps a Gear
08-09-2022 07:14 PM
Rode my First Double Century in June
08-08-2022 11:42 PM
2022 road cycling season
08-08-2022 04:03 PM
Cycling photos while on holiday
08-08-2022 01:17 PM
Vairas vintage bicycle brand
08-08-2022 11:45 AM
New user
08-08-2022 11:38 AM
Harvest Rush Gravel Grinder! $1,000 cash...
08-08-2022 09:15 AM

[-]
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. ichitan
20 posts
no avatar 2. Jesper
19 posts
no avatar 3. ReapThaWhirlwind
17 posts
no avatar 4. dinh thaihoang
11 posts
no avatar 5. JamesKim
5 posts