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PostPosted: Wed Jul 03, 2013 2:48 am 
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Joined: Fri Aug 11, 2006 2:30 am
Posts: 260
I shortened my chain, now it skips. Reasons why I shortened my chain: the original chain length was when I had a 40t large chain ring, now I only have a 30t. So I adjusted the chain length. When I had the original chain length, I thought it was too much chain and that's why I was getting chain suck.

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Scott Spark LTD 8.15kg

Giant NRS (Retired)
http://weightweenies.starbike.com/forum/viewtopic.php?f=1&t=104531


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PostPosted: Wed Jul 03, 2013 3:51 am 
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Joined: Thu Oct 13, 2011 5:25 pm
Posts: 168
Is the chain and/or chainring new-ish? Typically worn chainrings cause chainsuck.

Is it possible in the process of shortening the chain that you created a stiff link?

Also, on triples (and really, doubles), chains are typically shorter than ideal, to accommodate for the huge spread. Your chain may now be too short, exacerbating chainline issues.


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PostPosted: Wed Jul 03, 2013 6:58 am 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 2620
New chainring, old chain? That could cause an issue.
Combined with less engagement on the 30T as compared to the 40T.


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PostPosted: Wed Jul 03, 2013 9:13 am 
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Joined: Fri Aug 11, 2006 2:30 am
Posts: 260
Everything is about the same age. The chain is a KMC X10SL.

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Scott Spark LTD 8.15kg

Giant NRS (Retired)
http://weightweenies.starbike.com/forum/viewtopic.php?f=1&t=104531


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PostPosted: Wed Jul 03, 2013 11:44 am 
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Joined: Wed Jan 18, 2012 4:23 pm
Posts: 670
Location: Midlands, United Kingdom
Did you size the chain as per the relevant guides (SRAM/Shimano/Parktools - different techniques same result) or did you 'use the force'?

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PostPosted: Wed Jul 03, 2013 8:47 pm 
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Joined: Fri Aug 11, 2006 2:30 am
Posts: 260
http://www.aptosbiketrail.com/4325/meas ... chain.html

_________________
Scott Spark LTD 8.15kg

Giant NRS (Retired)
http://weightweenies.starbike.com/forum/viewtopic.php?f=1&t=104531


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PostPosted: Thu Jul 04, 2013 8:26 am 
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Joined: Wed Jan 18, 2012 4:23 pm
Posts: 670
Location: Midlands, United Kingdom
Yup, right method, so something else is worn out!

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Budget 26" HT build viewtopic.php?f=10&t=110956


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PostPosted: Thu Jul 04, 2013 3:19 pm 
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Joined: Fri Oct 14, 2011 4:36 am
Posts: 100
Like Socratease mentioned, you may have created a stiff link when shortening the chain.


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PostPosted: Thu Jul 04, 2013 6:12 pm 
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Joined: Wed Nov 01, 2006 4:55 am
Posts: 681
Location: Vancouver, British Columbia, Canada
Did you use a missing link to put the chain back together in the area you shortened, or just push a rivet back in? If you used a rivet, there is likely a tight link like others have mentioned.


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