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Medium or Long Cage ?

Old 11-08-15, 09:04 PM
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Medium or Long Cage ?

I'm wanting to put a 11-32 cassette on my 10 speed (shimano 5701) road bike , front gearing of 53/39t . Will I need a medium or long shimano rd ? Pretty sure I will definitely need to run a longer chain as well , thanks for any advice .
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Old 11-08-15, 09:23 PM
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Well, for example the Ultegra derailleur is available in Short (SS) and Medium (GS) lengths. You need the medium.

Last edited by cale; 11-08-15 at 09:31 PM.
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Old 11-08-15, 09:45 PM
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Thank you cale !
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Old 11-08-15, 09:46 PM
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You will absolutely need a GS(medium cage) Shimano 105 rd and a new chain.
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Old 11-09-15, 11:23 AM
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Typically in Shimano road derailleurs, the choice between SS and GS has more to do with your chainring spread (for instance double vs triple) than cassette spread. SS and GS models most often have exactly the same (or within one tooth difference) cassette capacities, and the longer cage of the GS is for taking up more chain length required by a greater range in front. Long cage Shimano derailleurs are usually MTB/touring/hybrid models, and are designed with the best geometry for a wider range cassette as well as a triple crank set.
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Old 11-09-15, 01:46 PM
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I don't believe that Shimano's medium cage derailleurs can handle a 21 tooth span on the rear. They're spec'd for a 28 tooth largest cog and a 28T total span, and I'm pretty sure that they can climb a bit beyond their spec to a 30T cog with a reasonably small front span (as in 14T which is the span of 39/53), but I believe that a 32T cog is a couple of teeth beyond what they can handle. The OP's desired setup is a 35T total span, which is way beyond their spec, and I have simply not ever seen Shimano's road stuff work with more than a 32T total span.

Last edited by D1andonlyDman; 11-09-15 at 01:50 PM.
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Old 11-09-15, 02:01 PM
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Long is getting into MTB , if not short.. medium is what you get in 105 road parts
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Old 11-09-15, 02:34 PM
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Originally Posted by fietsbob
Long is getting into MTB , if not short.. medium is what you get in 105 road parts
But the 11-32 cassette the OP wants to use is not a road part, it's designed for an MTB or hybrid, and not something that Shimano 105 was ever meant to work with. It's certainly do-able, but not with a Shimano 105 derailleur.
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Old 11-09-15, 02:52 PM
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Originally Posted by D1andonlyDman
I don't believe that Shimano's medium cage derailleurs can handle a 21 tooth span on the rear. They're spec'd for a 28 tooth largest cog and a 28T total span, and I'm pretty sure that they can climb a bit beyond their spec to a 30T cog with a reasonably small front span (as in 14T which is the span of 39/53), but I believe that a 32T cog is a couple of teeth beyond what they can handle. The OP's desired setup is a 35T total span, which is way beyond their spec, and I have simply not ever seen Shimano's road stuff work with more than a 32T total span.
One of my bikes has 105 components, the RD is medium cage, I use a SRAM 12-32 cassette, and it works fine. My chain rings are 50/34 vs. the OP's 53/39.
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Old 11-09-15, 03:20 PM
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Originally Posted by D1andonlyDman
But the 11-32 cassette the OP wants to use is not a road part, it's designed for an MTB or hybrid, and not something that Shimano 105 was ever meant to work with. It's certainly do-able, but not with a Shimano 105 derailleur.
My Anyroad Comax came stock with an 11-32 cassette and a 105 GS RD - AnyRoad CoMax (2016) | Giant Bicycles | United States
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Old 11-09-15, 03:44 PM
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Originally Posted by Dyskolos
My Anyroad Comax came stock with an 11-32 cassette and a 105 GS RD - AnyRoad CoMax (2016) | Giant Bicycles | United States
Hee, hee. I wasn't aware 105 came in an 11-speed configuration today. My 105-equipped bike is a 10-speed 2006 Fuji Roubaix Pro (chain rings, RD, and cassette obviously changed): 2006 Fuji Roubaix Pro - BikePedia

Last edited by JohnnyCyclist; 11-09-15 at 03:51 PM.
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Old 11-09-15, 04:18 PM
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Originally Posted by D1andonlyDman
But the 11-32 cassette the OP wants to use is not a road part, it's designed for an MTB or hybrid, and not something that Shimano 105 was ever meant to work with. It's certainly do-able, but not with a Shimano 105 derailleur.
The 5701 rear derailleur was changed in its geometry and certainly will handle a 32t cog as will the 6700 and 7900 series ders. I've been using 6700 rear ders with 11-32 cogs for years on many bikes. Because the OP has a 39/53 crankset, he will have to use a medium cage derailleur. If he had a compact he could use a short cage.
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Old 11-09-15, 09:26 PM
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Originally Posted by Dyskolos
My Anyroad Comax came stock with an 11-32 cassette and a 105 GS RD - AnyRoad CoMax (2016) | Giant Bicycles | United States
Many road bikes now come stock with 11-32 cassettes and GS RDs.

I run the Shimano 105 GS rd and SRAM 11-32 cassette on my road bike and it works great.
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