Question about octalink chainset

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mac man
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Question about octalink chainset

Postby mac man » Mon Apr 29, 2013 15:53 pm

My bike has what appears to be an octalink BB. It currently has a deore chainset which is fairly knackered. Will any other Octalink chainset fit? Just not sure if there are any differences in the splines etc. Seen an 'as new' Deore chainset on the eBay for £40 which would do the job nicely. Just don't want to order and find it doesn't fit.

Can only do online ordering as I'm currently living in Spain and the nearest bike shop is miles away, and my Spanish ain't too great either.
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supersonic
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Re: Question about octalink chainset

Postby supersonic » Mon Apr 29, 2013 15:59 pm

Depends on the length of the bottom bracket axle on there.

There are two versions of octalink two, though v1 is mostly seen on road bike stuff and old xtr.

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welshkev
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Re: Question about octalink chainset

Postby welshkev » Mon Apr 29, 2013 16:28 pm

Yo necissita un octalink chainset para esto por favor? :lol:
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Re: Question about octalink chainset

Postby mac man » Mon Apr 29, 2013 17:31 pm

supersonic wrote:Depends on the length of the bottom bracket axle on there.

There are two versions of octalink two, though v1 is mostly seen on road bike stuff and old xtr.


OK... it's deffo V2. Just taken the cranks off and checked on the http://sheldonbrown.com/bbsize.html

Axle length looks to be 115/116mm

Crank length measured from centre of pedal axle to centre of bb axle is 175mm.

So would this work? http://www.chainreactioncycles.com/Mode ... elID=58156

And is there much advantage over buying another Deore crankset?

I was going to get some new chainrings, but it seems cheap enough to get a whole new chainset...
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Re: Question about octalink chainset

Postby supersonic » Mon Apr 29, 2013 17:39 pm

You need look for the crankset in Shimano Tech Docs to find out what axle length is needed. Can be a bit of a pain, but only way to be sure!

I'd consider a whole new system:

http://www.merlincycles.com/bike-shop/m ... et-bb.html

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Re: Question about octalink chainset

Postby mac man » Tue Apr 30, 2013 08:36 am

supersonic wrote:You need look for the crankset in Shimano Tech Docs to find out what axle length is needed. Can be a bit of a pain, but only way to be sure!

I'd consider a whole new system:

http://www.merlincycles.com/bike-shop/m ... et-bb.html


Hmmm... I think I might just stick with just getting a middle chain ring, as this is the one that's knacked good and proper. The new chain won't run on it at all, but the outer and granny seem to run fine.

If Octalink is so old school I might as well wait till the BB goes before replacing everything. Least now I can afford some blingy pedals :lol:
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Re: Question about octalink chainset

Postby mac man » Tue Apr 30, 2013 10:01 am

Just been looking at chainrings... seem to be plenty of those to choose from as well. So how do I know which to buy? CRC do 2 Deore... http://www.chainreactioncycles.com/Sear ... +chainring
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nicklouse
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Re: Question about octalink chainset

Postby nicklouse » Tue Apr 30, 2013 10:06 am

take a punt you have a 50% chance that you will need to take a file to it.

bolt holes will be right.
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Re: Question about octalink chainset

Postby mac man » Tue Apr 30, 2013 10:17 am

nicklouse wrote:take a punt you have a 50% chance that you will need to take a file to it.

bolt holes will be right.


LOL... my metalwork skills have seen better days. I'll take the chainset to bits and see which of the 2 looks most like the current one.
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nicklouse
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Re: Question about octalink chainset

Postby nicklouse » Tue Apr 30, 2013 10:20 am

dont bother the diference is only about a mm on the shoulders that sit on the cranks. inner and outer rings are different. Shimano change which is the bigger as and when they feel like it.
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Re: Question about octalink chainset

Postby mac man » Tue Apr 30, 2013 13:23 pm

nicklouse wrote:dont bother the diference is only about a mm on the shoulders that sit on the cranks. inner and outer rings are different. Shimano change which is the bigger as and when they feel like it.


Just bodge it then :lol:
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Re: Question about octalink chainset

Postby nicklouse » Tue Apr 30, 2013 13:25 pm

or not. like I said it is 50/50.
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