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Tiagra rear derailleur the same pull as an MTB one?
Does a rear Tiagra derailleur have the same cable pull as a MTB one? Trying to get a Tiagra rear derailleur to work with MTB 7 speed shifters.
Thanks and cheers |
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#2
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Tiagra rear derailleur the same pull as an MTB one?
On Friday, May 9, 2014 9:12:09 PM UTC-4, Sir Ridesalot wrote:
Does a rear Tiagra derailleur have the same cable pull as a MTB one? Trying to get a Tiagra rear derailleur to work with MTB 7 speed shifters. Thanks and cheers Addendum. MTB shifters are Shimano STX |
#3
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Tiagra rear derailleur the same pull as an MTB one?
No they are different.
One source I have says: For the Shimano road 10 speed rear derailleur (2 : 1 cable pull ratio ) the total cable pull is around 24mm. For MTB 10 speed rear derailleur the cable pull ratio is 1.5 : 1, and the total cable pull is around 35mm. I think there would be a similar difference with a 7 speed. Old Bloke |
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Tiagra rear derailleur the same pull as an MTB one?
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#5
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Tiagra rear derailleur the same pull as an MTB one?
On 5/9/2014 8:12 PM, Sir Ridesalot wrote:
Does a rear Tiagra derailleur have the same cable pull as a MTB one? Trying to get a Tiagra rear derailleur to work with MTB 7 speed shifters. Thanks and cheers Yes, compatible, which is not to say there could not be other troubles. Gear wire on the correct (inside) side of the anchor? Gear wire runs freely and is not kinked or damaged? Derailleur/gear tab are aligned? Cable tension is correct, i.e., just even (not slack nor tight) in high gear? Limit screws are set correctly? Derailleur is compatible with gear range you're using? -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
#6
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Tiagra rear derailleur the same pull as an MTB one?
David Scheidt wrote:
:No, they're the same. Except when they're different. The OP hasn't rovided enough information. If it's less than 10 speeds, you can use :a road or mountain derailleur. For 10 speed mountain, you need a ten :speed mountain derailleur. Happy to be corrected :-) OB |
#7
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Tiagra rear derailleur the same pull as an MTB one?
On Saturday, May 10, 2014 8:58:25 AM UTC-4, David Scheidt wrote:
wrote: :No they are different. No, they're the same. Except when they're different. The OP hasn't provided enough information. If it's less than 10 speeds, you can use a road or mountain derailleur. For 10 speed mountain, you need a ten speed mountain derailleur. :One source I have says: For the Shimano road 10 speed rear derailleur (2 : 1 :cable pull ratio ) the total cable pull is around 24mm. For MTB 10 speed :rear derailleur the cable pull ratio is 1.5 : 1, and the total cable pull is :around 35mm. I think there would be a similar difference with a 7 speed. :Old Bloke -- sig 22 Gee whiz. I thought that my mentioning the 7 speed shifters in my OP would be enough information. I also thought that 7 speeds are less than 10 speeds. LOL VBG ;) Cheers |
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