Brifters with MTB gearing on Norco Cabot
06-23-11, 12:27 PM
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Brifters with MTB gearing on Norco Cabot
I was looking at the specs for the 2011 Norco Cabot and I noticed that they use a Deore crankset (48/36/26) with Tiagra brifters.
I was under the impression that brifters don't index correctly with MTB gearing (on the crankset).
Has anyone tried a setup like this before?
This question is really just academic for me, but I am curious.
I was under the impression that brifters don't index correctly with MTB gearing (on the crankset).
Has anyone tried a setup like this before?
This question is really just academic for me, but I am curious.
06-23-11, 03:46 PM
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Almost right. Drop bar brifters don't work with MTB front derailleurs. The M591 obviously works on this bike. So....
06-23-11, 04:04 PM
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If you put on an MTB crank you would be able to shift between two of the chainrings but not all three. You'd have to choose between the inner and the middle or the middle and the big.
The gear inches for 22, 24, and 26 tooth chainrings on the 34 tooth rear cog are 17.5, 19.1, and 20.6.
In my opinion it's not worth making any changes.
The gear inches for 22, 24, and 26 tooth chainrings on the 34 tooth rear cog are 17.5, 19.1, and 20.6.
In my opinion it's not worth making any changes.
06-23-11, 05:35 PM
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I didn't think it was the gearing that was an issue (though it can be) but rather the amount of pull is slightly different for front mtb ders vs road ders. I've experienced this first hand in the past when I tried to use an mtb front der with an STI shifter, but had problems with getting that alignment just right. It never quite worked.
Anyone got the scoop on this? Or was I just hallucinating and having a bad day?
Anyone got the scoop on this? Or was I just hallucinating and having a bad day?
06-23-11, 10:26 PM
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Originally Posted by Nigeyy
I didn't think it was the gearing that was an issue (though it can be) but rather the amount of pull is slightly different for front mtb ders vs road ders. I've experienced this first hand in the past when I tried to use an mtb front der with an STI shifter, but had problems with getting that alignment just right. It never quite worked.
Anyone got the scoop on this? Or was I just hallucinating and having a bad day?
Anyone got the scoop on this? Or was I just hallucinating and having a bad day?
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Stuart Black
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Days of Wineless Roads. Bed and Breakfasting along the KATY
Twisting Down the Alley. Misadventures in tornado alley.
06-24-11, 12:35 PM
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Thanks for the responses. Like I said, I was really just asking out of curiosity since I don't think I'd ever try to rig up something like that. Seems like too much fine-tuning (and therefore too much chance for mistakes to be made).
06-24-11, 02:05 PM
#7
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With 48-36-24 chainrings you can use an Ultegra or even Dura Ace FD with STI levers. I currently have this setup running on three bikes in my garage (well, one has a 50-36-26, but close enough).
06-24-11, 02:38 PM
#8
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48/38/28 is a mountain bike crank ,just like in the 80's, that's what they shipped with..
now its a 'trekking' set, and current stuff for MTB's has gone 'compacter' 44/32/22
old and also new .. under a new name..
now its a 'trekking' set, and current stuff for MTB's has gone 'compacter' 44/32/22
old and also new .. under a new name..
06-24-11, 02:40 PM
#9
Senior Member
Originally Posted by briwasson
With 48-36-24 chainrings you can use an Ultegra or even Dura Ace FD with STI levers. I currently have this setup running on three bikes in my garage (well, one has a 50-36-26, but close enough).
2Fer
