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[Closed] Singlespeed mtb chain length problem.....

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[#4268446]

I've got a decade virsa prestige frame built up as a singlespeed hardtail:

[img] [/img]

Having just had it stripped and serviced im having a bit of a problem, it was running 34T + 16T before and now on 32T + 16T with a new chain, but having a chain length/tensioning issue.

Its on sliding horizontal dropouts and the chain was too slack, so take a link out of it and now...... its too short and is way overtensioned on the cogs, so whats the answer.... a half link or a different sized chain.!?

Slightlyconfused.com

Any suggestions (and dont say put a mech and gears on it!

Thanks in advance!


 
Posted : 16/08/2012 7:30 pm
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assuming your using a 1/8th chain, i would opt for a half link.


 
Posted : 16/08/2012 7:36 pm
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Sounds like you've found a magic ratio, but in a bad way! ๐Ÿ™‚


 
Posted : 16/08/2012 7:38 pm
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Half link for sure.


 
Posted : 16/08/2012 7:39 pm
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Sorry but what is a 'magic ratio' .......!????


 
Posted : 16/08/2012 7:47 pm
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Dont know if its 1/8 or 3/32 : despite reading this! :

[url=http://] http://sheldonbrown.com/gloss_ch.html [/url]


 
Posted : 16/08/2012 7:52 pm
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Ive got that frame built up as a singlespeed too!

Ive had all sorts of issues with the chain. Didnt get on with the sliding drop outs at all so I now have it with the mech hanger drop outs and a basic roller type tensioner, chain length isnt really as issue then.


 
Posted : 16/08/2012 8:37 pm
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A half link is the way to go and, in my opinion,[url= http://www.billys.co.uk/english/group.php?prod=ch-gu-slinklink ] this [/url] is the best there is - use it with two connecting links.


 
Posted : 16/08/2012 8:42 pm
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Old chain was stretched, new one is not... Yet.
Use a half link for a while then ditch it(as they are the weakest link) and once your chain has stretched a bit, it will be groovy.


 
Posted : 16/08/2012 10:51 pm
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Thanks, has anyone got any pictures of a half link installed?

EDOT: DOH!!!! found it: [url= http://velosolo.co.uk/faq.html#d12 ]http://velosolo.co.uk/faq.html#d12[/url]


 
Posted : 17/08/2012 7:15 pm
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Are you happy with your gear ratio? If not one tooth up or one down on your rear cog might solve the issue.

A sliding dropout with too little movement to deal with a single link difference doesn't sound too hot to me.


 
Posted : 17/08/2012 7:23 pm
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Another vote for plus or minus one on the sprocket here. I run 32/17 or you could go 32/15 or 33/16 etc


 
Posted : 17/08/2012 8:43 pm
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If 34:16T works the 36:18T will also work with exactly 1" extra chain and retain the dropouts in the same position. Half links are a faff.


 
Posted : 17/08/2012 9:18 pm
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gibbonarms - Member
Sorry but what is a 'magic ratio' .......!????

It's a specific combination of chainring, sprocket and frame size (specifically chain stay length) that means you can run singlespeed without a tensioner.

Until, of course, your chain stretches ๐Ÿ˜€


 
Posted : 18/08/2012 7:05 am
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easy - just get a different length chain as you suggest.


 
Posted : 18/08/2012 7:47 am
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And the answer was.......

A half link chain in pimped out white colour!!!!


 
Posted : 06/09/2012 10:25 am