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Old 01-14-10, 07:17 AM   #1
mkwdrs
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Jamis Aurora Elite (2009) Gearing Question

I am considering purchasing a 2009 Jamis Aurora Elite. Due to being overweight, I really struggle with the hills and therefore like a really easy pedalling granny gear.

So, if I wanted to lower the gearing on this bike, what all would I have to change?

Derailleurs - Shimano Ultegra GS rear & 105 front, 28.6mm clamp
Shiftlevers - Shimano 105 Dual Control STI, 30-speed
Cassette - Shimano CS-5600, 10-speed, 12-27
Crankset - FSA Gossamer Triple, 50/39/30,

http://www.jamisbikes.com/usa/thebik...lite_spec.html

Of course, I could always just go with the base Aurora model.
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Old 01-14-10, 07:48 AM   #2
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Least expensive and simple would be to install a mountain crankset. Going as low as a 22 small ring would make it a billy goat. Should be able to find an LX Shimano crank for $150 or less. The swap is simple and the only other thing needed would be to shorten your chain.

You could go with a mountain Derailleur and cassette as well but.... I would go with the crank first and see if you really need lower gearing after trying the mountain crank.

my 2 cents...
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Old 01-14-10, 07:56 AM   #3
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Go with the Aurora Model and change the 50/39/30 crank to a 50/39/24.

I rode a 50/39/30 cross country and wished I that change the small ring to a 24T.
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Old 01-14-10, 08:20 AM   #4
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I agree, I have changed to a 24T on my triple. It makes hills 20% easier for about $20. By far the biggest bang for the buck.
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Old 01-14-10, 10:29 AM   #5
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Quote:
Originally Posted by bfree View Post
I agree, I have changed to a 24T on my triple. It makes hills 20% easier for about $20. By far the biggest bang for the buck.
I agree that this is a good solution, I did the same on my touring bike. But be aware that if you do this your rear derailleur probably won't allow you to use all the ring/cog combos. It won't be able to take up enough of the slack in the chain if you go into the small ring and smallest cogs. This isn't really a problem, when you're in the small ring you'll usually be in the big cogs anyway, but it's something to be aware of.

Chris
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