Fitting a new chain - How to find out correct length req'd ?

doogie":1uthgdee said:

I once read that to find out the correct length of chain when fitting a new one was to feed the chain through the gears bypassing the rear mech, make sure the chain is on the outer front ring and on the biggest rear gear. Then bring both ends of the chain together untill taught - add another 2 to 3 links and then shorten the chain to that length.
Once the chain has been shortened it is then re fed through the rear mech and around front and rear gears and rejoined. Voila.

Is this the correct way to do it ? :?

Click to expand...

orange71":28py2spm said:

And I do it another way

Feed the chain through both mechs onto largest cog at the back and largest ring at the front and ensure you have enough chain that the rear mech has a bit of slack in it so it wouldn't jam if you chose that gear combination.

Click to expand...

Andy B":3bjvt754 said:

Bypassing rear mech, big ring/big ring +1 or +2 full links extra, depending on rear mech cage length.

Alternatively measure it against the old chain taking into account chain stretch.

Click to expand...

heathy":2at02qri said:

Or you could do the same as me, i get my LBS to do it

Click to expand...

Pickle":1bnp99zd said:

heathy":1bnp99zd said:

Or you could do the same as me, i get my LBS to do it

Click to expand...

Ditto

+ setting my gears up.......+ fitting cables

Click to expand...