Thorn Cycles Forum

Technical => General Technical => Topic started by: ahconway on March 15, 2007, 11:31:30 PM

Title: Chain tension
Post by: ahconway on March 15, 2007, 11:31:30 PM

I've noticed that the chain on my Raven AT is looking kind of slack.

How do I know what the proper tension should be? And adjust, am I better off removing a link from the chain or adjusting the BB?

Andrew C
www.velofellow.com

Title: Re: Chain tension
Post by: geocycle on March 16, 2007, 10:44:52 AM

See P9 of owners handbook  http://www.thorncycles.co.uk/thornpdf/ThornBikeOwnerManual2Web.pdf

PS I've been sufferring from 'chain tension' for the last 3 weeks caused by an irritating tick on the down pedal stroke!

Title: Re: Chain tension
Post by: stutho on March 16, 2007, 12:19:05 PM

Hi Andrew,

Wow I can't believe you have never needed to adjust the tension!  

Definitely best to adjust the BB first.  Only remove a link if the BB is in the max position and you still have a loose chain.  You probable know this but I say it anyway: It is MUCH better to have a chain that is slightly loose rather than a chain that is too tight.

Title: Re: Chain tension
Post by: ahconway on March 16, 2007, 12:59:22 PM

I know! But I haven't put as many miles on the bike as I would have liked/expected. I suppose that's what happens when you have two babies and move half way round the world!

Title: Re: Chain tension
Post by: tynevalleycommuter on March 16, 2007, 01:14:59 PM

You might get more miles in if you get your wife to have the babies in future![;)]

(sorry, couln't resist the opportunity!)