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Old 10-27-04, 11:10 PM   #1
ScituateJohn
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Using a mountain crankset on a 700c touring bike

Does anybody have a problem using a mountain crankset on a bike with larger wheels and a lower bottom bracket? I was thinking of using a crankset with a 44 or 42 big ring on a bike with 700c wheels. I noticed that the chainstays tilt up more on bikes with 700c wheels and lower bottom brackets than they do with mountain bikes that use smaller wheels and a higher bottom bracket. I haven't tried it yet, but I am concerned that the front derailleur will hit the chainstay. What is the smallest chainring that one can use to avoid this?
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Old 10-27-04, 11:52 PM   #2
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I purchased a Trek 520 with 700c wheels. I had the Shimano 105 crankset with 52/42/30 chainrings relaced with a Deore LX crankset with 44/32/22 chainrings.

Works great. No problem at all with the front derailer. Many people make the same switch. Bruce Gordon makes a line of touring bikes that come with 700c wheels and 44/32/22 MTB cranks.
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Old 10-28-04, 01:36 AM   #3
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you should have no problems chaining it ... Cannondale touring bikes have MTB cranks and 700C wheels ... I have installed an LX crank on my Trek 520 and still use the stock 105SC front deraileur and it works fine ... mind you, I also changed the drop bars for flat ones with LX brakes/shifters ...

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Old 10-28-04, 05:28 AM   #4
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I have a 58cm Surly Long Haul Trucker with XT 44/32/22 and XT 9spd rd 11-34. It works very well.

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Old 10-28-04, 08:00 AM   #5
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Thanks for the replies. I will give it a try.
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Old 10-28-04, 12:54 PM   #6
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Originally Posted by Patch29
I have a 58cm Surly Long Haul Trucker with XT 44/32/22 and XT 9spd rd 11-34. It works very well.

Very nice indeed! definitely bike porn! Sadly the Surly LHT frame wasn't around when I bought my touring bike or I would have looked seriously at this as well ...
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Old 10-28-04, 01:13 PM   #7
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Very nice indeed! definitely bike porn!
Thanks, you can find more photos here if you have not seen them before.
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