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[Closed] short cage mech on fat bike?

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[#6791368]

Im sure ive read somewhere that this is a no-no? but thinking id like to swap the Deore RD-M615 mech that comes as standard on a genesis carbou with a short cage Zee mech i already have... will i explode?


 
Posted : 19/01/2015 2:03 pm
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It's the size of the cassette that dictates the mech length not the frame


 
Posted : 19/01/2015 2:20 pm
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oh thanks. i believe its a CS-HG50 11-36T - so that should be alright then...?


 
Posted : 19/01/2015 3:06 pm
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11-36 is going to be a bit of a stretch for a short cage. I think 28 is the biggest you can run with a short. Medium will work (ish), the max spread is really 11-32.

Edit: Yep, [url= http://www.shimano.com/content/sac-bike/en/home/components1/mountain/zee/rd-m640-ss.html ]28 for the DH spec, (Short) and 36 for the freeride (medium)[/url]


 
Posted : 19/01/2015 3:11 pm
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I am running a 34 N/W - 11-40 with a Zee on a Fatty and a Puffin with no problems
both bike just done the Puffer and still zero issues


 
Posted : 19/01/2015 3:17 pm
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im pretty sure my mech is the 32-36 wide ratio one, but ill have to double check...


 
Posted : 19/01/2015 3:29 pm
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hot_fiat- the freeride is still a short cage, just set up differently. I (along with many others I've seen) run a Zee FR with a 36T cassette just fine.

So long as you have a single ring up front it'll work fine.


 
Posted : 19/01/2015 3:32 pm
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Ah, the random numbers on the shimano website makes sense now.
its a bit better spelt out on [url= http://www.chainreactioncycles.com/shimano-zee-m640-shadow-10-speed-rear-mech/rp-prod82431 ]CRC[/url]


 
Posted : 19/01/2015 3:40 pm
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rOcKeTdOg - Member
It's the size of the cassette that dictates the mech length not the frame

That and how many rings you have up front, more importantly


 
Posted : 19/01/2015 3:50 pm
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I run a Zee with 32 front 11 - 36 rear on 2 Fat Bikes and have 22 upfront as well I just cant use 3 smallest cogs when in the 22 tooth - not needed anyway apart from that all works fine ๐Ÿ˜€


 
Posted : 19/01/2015 5:59 pm