Shimano Rear Derailleur Question

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2014-01-24 11:22 AM


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Subject: Shimano Rear Derailleur Question
I recently broke the rear derailleur hangar on my road bike. As part of the "incident", the derailleur was pulled into the back spokes and got a little mangled). The shop was able to straighten the rear derailleur and install a new hangar to get the bike working again, but recommended I start looking into a new rear derailleur.

I'd like to be self-sufficient and make this repair/replacement myself, so I'm looking online for the new rear derailleur.

Currently, I have the Shimano 105 RD-5700-GS rear derailleur (http://tinyurl.com/opeotyn). I can't find the RD-5700-GS in local stores or online (I've ordered it from Performance Bike, but it has been back-ordered for 5 weeks). I can, however find the RD-5701-GS at Amazon.

I'm curious what could be the difference, if any, between these two models?

Any help would be appreciated.



2014-01-24 12:59 PM
in reply to: 0

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Champion
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Knoxville area
Subject: RE: Shimano Rear Derailleur Question
looks like you'll be ok.

Just make sure it accepts your current gear ratio's (biggest cog in the back)

Edited by Leegoocrap 2014-01-24 1:00 PM
2014-01-24 2:00 PM
in reply to: Leegoocrap


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Subject: RE: Shimano Rear Derailleur Question
How can you see that it is okay? The maximum cassette teeth size?
2014-01-25 10:25 AM
in reply to: LampLighter26

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Pro
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Subject: RE: Shimano Rear Derailleur Question
That's part of it… the derailleur has a max capacity which is (large ring-small ring) + (largest cog-smallest cog).
2014-02-25 5:24 PM
in reply to: LampLighter26

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Member
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The Heeb, UT
Subject: RE: Shimano Rear Derailleur Question
Shimano has a fairly standard nomenclature for their components:

RD - Rear Derailleur

57xx - family (5700 series are current generation 10 speed 105. The last two digits may increment as running changes are incorporated into an existing product [such as changes made to accommodate updated Flight Deck computer controls] or to indicate a variation of a product [such as a triple or compact crankset], but will indicate that the parts are compatible with the rest of the 'family')

GS - medium cage (SS = short cage, SGS = long cage)

In other words, the 5701 probably has some minor bug fix, but is otherwise identical to your existing RD

SYJ
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