Changing cassette ratios...

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Finlaz22
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Joined: Sat Oct 20, 2012 08:31 am

Changing cassette ratios...

Postby Finlaz22 » Wed Jan 02, 2013 11:10 am

Is it ok to switch from a 12-26 to an 11-28 by only swapping cassettes? Or does a different chain need to be used etc?
It's running shimano 2300 8spd (obviously swapping 8spd for 8spd).
Thanks!

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smidsy
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Joined: Tue Jan 17, 2012 20:52 pm

Re: Changing cassette ratios...

Postby smidsy » Wed Jan 02, 2013 11:13 am

No problem in theory as long as your rear mech can take a 28. Check out Shimano tech docs on their website for confirmation.

Chain should be fine as it is advised to avoid big ring big sprocket combos anyway - even shimano size the chain on big chainring small cassette sprocket.
Yellow is the new Black.

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Rolf F
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Re: Changing cassette ratios...

Postby Rolf F » Wed Jan 02, 2013 11:20 am

You are increasing the range of gears the rear mech has to manage by 3. You ideally would want another pair of links in there but if the current chain is on the long side it might be fine.

Whilst you shouldn't really end up in big - big combinations, it can happen so it makes sense to make sure that the gear train can handle it.

You may as well get a new chain for the new cassette. It's a consumable and you can keep the old chain for the old cassette should you want to use it again (and you would away from hilly country!).
Faster than a tent.......

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Finlaz22
Posts: 151
Joined: Sat Oct 20, 2012 08:31 am

Re: Changing cassette ratios...

Postby Finlaz22 » Wed Jan 02, 2013 12:04 pm

Looks like it should be fine, thanks didn't realise about the techdocs techdocs.shimano.com/media/techdocs/content/cycle/SI/2300/SI_5XA0A_001/SI-5XA0A-001-ENG_v1_m56577569830673817.pdf


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