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[Closed] Shimano 105 Derailleur confused!

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[#6479172]

Just got a new road bike and it has a 105 derailleur. I want to get a wider range cassette but not sure if I have the short or medium cage. It has some numbers on it 5701 but nothing to state cage length. How do can I find this out?


 
Posted : 12/09/2014 7:56 pm
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look up a picture of both, one will be noticeable longer than the other

example:

should be enough to know which one you have

what size cassette do you want anyway? I thought shimano short cage could handle 30? or am I wrong


 
Posted : 12/09/2014 8:07 pm
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Was wanting a 32 but from what I read online the short will do 30 but is all very confusing compared to mtb stuff.


 
Posted : 12/09/2014 8:17 pm
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5701 is an up-specced mech that should handle a 32t cassette. ( read elsewhere a while back when researching for myself.).

Obviously you will need to check that the arm can handle the chain length difference across the range of the cassette and rings.

I have compact setup CX bike with a 5701. It's running a 28t just now, but I can put a wheel with a 32t on it to check if you want.


 
Posted : 12/09/2014 8:23 pm
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I believe shimano's new media can cope with 30t sprocket Max ...


 
Posted : 12/09/2014 8:47 pm
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what size are your chainrings?

I have a 34 inner and 11-28 cassette and it's got me up everything so far (including 500m of 10-15% gradient), and I'm definitely not hardcore

if you're on compact rings a 30t cassette should handle anything you can throw at it


 
Posted : 12/09/2014 8:56 pm
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Right, pretty sure it's a short (going by pics) Got a 50/34 so think I might just get a 30T and throw it on and see what happens.[b]Fisha[/b] would be cool if you could through on the 32T cheers.


 
Posted : 12/09/2014 9:58 pm
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Ok, I'll fit it tomorrow first thing and post back.


 
Posted : 12/09/2014 10:47 pm
 Haze
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11-23 will get you up anything ๐Ÿ˜‰


 
Posted : 13/09/2014 12:09 am
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[b]Haze[/b] yeah right!


 
Posted : 13/09/2014 12:11 am
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32t works fine ... bike is a stock Cannondale CaadX 105 other than the rear wheel dropped in ... I didn't adjust anything.

[IMG] [/IMG]

[img] [/IMG]


 
Posted : 13/09/2014 10:02 am
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Nice one [b]fisha[/b] Thanks for taking the time to try this for me. Much appreciated.


 
Posted : 13/09/2014 1:15 pm