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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 01-16-14, 01:58 PM   #1
IAMAMRA
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Will this work?

Wanting to switch my stock drivetrain to this http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1 here is what I currently have http://archive.raleighusa.com/archiv.../detour-45-11/

Will this work? Do I need anything special? Having the local shop do the instillation, but want to make sure this will work(they are closed for renovation right now so can't ask them).

Thanks for your time!

Micah
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Old 01-16-14, 02:11 PM   #2
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Not sure why unless you want rings with fewer teeth?
IF so, you'd really want to change the FDER to one optimized for the smaller rings, although the existing one would probably still "function", once the height was reset.
Your existing BB "might" be too long, but "might" still "function". (122.5 vs 118mm)
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Old 01-16-14, 02:54 PM   #3
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Are you going for lower gears, or a different look?

I suspect your front derailer will shift fine over the rings, but as Bill Kapaun said, you should probably lower the front derailer slightly (and then adjust the shifting aferwards).

And you may want a different bottom bracket in order to get proper chainline with the new crank.
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Old 01-16-14, 03:05 PM   #4
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It will work (with some adjustments and BB swap) but your stock bike has a low bottom end (28/32) so what are you trying to accomplish?
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Old 01-16-14, 03:11 PM   #5
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I find that I still am looking for more bottom end around here, and with a tour in the works this year thought it would be a nice option.
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Old 01-16-14, 10:53 PM   #6
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Just thumbed through your blog. Let me just say that the example that you are setting for your kids is unrivaled, of a scale that we should all aspire to.

Also, bike tours are an absolute blast. Some of my best cycling memories are from multi-day tours with friends. Have a blast, and be safe out there.

I'm sorry I don't have an answer for your question.

-Jeremy
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Old 01-17-14, 03:55 AM   #7
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Should be a straight off swap, finished off with a gearing adjustment.

Although, as others have mentioned, a 28/32 is a fairly low gear to start with. But if you've confirmed that you really need lower, go for it.

Admittedly, a supposedly mtb crank will open up lower gears than a 34T cassette would.

Losing top end shouldn't be much of a concern. I run a 42 big on my commuter and am entirely happy to coast those precious moments when I'm spinning out.

Or you could look into some of this stuff:http://www.abundantadventures.com/quads.html

I've gotten really fond of "road" (=tightly spaced) cassettes, and something like a quad, or a ridiculously tiny granny gear, would make it possible to get both a decent overall range, and tight spacing.
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