New: Take part in the April 2020 Giveaway for a brand new GIORDANO™ bicycle

Welcome guest! Register or sign in to participate in the cycling discussions.


Chain skip
#1
I've  a 9speed DA that is fine going up & down the gearing, but put a load on 1st, 2nd & sometime, the chain skips. I cannot get my indexing right to get rid of it, any thoughts?
  Reply
#2
Most common cause of this is worn chain and rear gear cluster (cassette).
You can measure for chain stretch and visually inspect cassette, but this kind of skipping can happen even before there is a huge amount of obvious wear on the parts. Usually recommended to replace both parts at the same time unless you have a strong reason to think only one is worn.
  Reply
#3
(10-09-2015, 04:42 PM)DaveM Wrote:  Most common cause of this is worn chain and rear gear cluster (cassette).
You can measure for chain stretch and visually inspect cassette, but this kind of skipping can happen even before there is a huge amount of obvious wear on the parts. Usually recommended to replace both parts at the same time unless you have a strong reason to think only one is worn.

+1

Other possibilities (less likely):
* a stiff link in the chain.
* inadequate chain lubrication.
* weak RD spring.
* chain too long.
Nigel
  Reply
#4
(10-09-2015, 06:19 PM)nfmisso Wrote:  
(10-09-2015, 04:42 PM)DaveM Wrote:  Most common cause of this is worn chain and rear gear cluster (cassette).
You can measure for chain stretch and visually inspect cassette, but this kind of skipping can happen even before there is a huge amount of obvious wear on the parts. Usually recommended to replace both parts at the same time unless you have a strong reason to think only one is worn.

+1

Other possibilities (less likely):
* a stiff link in the chain.
* inadequate chain lubrication.
* weak RD spring.
* chain too long.

Chain is new. Likely i didnt cut the length correctly, first time using a removable link chain. Or it is the cassete, it has about 3k mileson it?
  Reply
#5
Check the length first. But putting a new chain on an old cassette (even one without that many miles) is a very typical cause of the sudden appearance of chain skip under load. Chains and cassettes "wear into each other" and it's common to have problems when you change one but not the other.
  Reply
#6
(10-09-2015, 12:38 AM)mastermartymo Wrote:  I've  a 9speed DA that is fine going up & down the gearing, but put a load on 1st, 2nd & sometime, the chain skips. I cannot get my indexing right to get rid of it, any thoughts?

Maybe a dumb question but are you using a 9 speed chain? They are different then a ten 8 speed chain I'm told. Slightly thinner I believe.
"Where ever we go, there we are"
  Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  Chain skip from chainrings? larsonian 6 9,329 04-05-2013, 02:44 AM
Last Post: larsonian
  Too much force on pedals makes it skip and not move wheel jelee8804 21 23,944 09-13-2012, 04:12 PM
Last Post: DaveM
  Rear derailleur chain skip fredjunk2005 4 9,665 05-13-2012, 07:48 PM
Last Post: Joe_W
  Pedals skip while in 7th cog (highest gear) Tricericops 2 11,905 07-24-2011, 01:03 AM
Last Post: RobAR
  Crank skip brad 5 6,351 07-18-2011, 08:42 AM
Last Post: Joe_W
  Shift/skip every 1 1/2 revolutioins LeeS773 1 5,182 08-10-2010, 02:06 PM
Last Post: xerxes
  Rear skip/autoshift on skewr tension change Paul_Bags 1 7,526 03-25-2009, 06:54 PM
Last Post: DaveM
  Chain skip joeydvivre 1 5,977 10-29-2008, 02:42 AM
Last Post: Alex Ramon

Forum Jump: