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Old 12-29-04, 09:48 PM   #1
Istanbul_Tea
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LHT Owners... Question-

I am helping someone buy and build up a LHT.

Question... Are there any issues with *minimums* on chainring sizes when using a triple on a LHT? For instance, would a Deore 22/32/44 crankset work with regard to fit, chainline, etc?

On the Surly site I see maximums listed... but under BB info it says, "68mm wide, 1.37x24t"... does that mean that the minimum is a 24T chainring?

Thanks
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Old 12-29-04, 10:56 PM   #2
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I'm running a Sugino XD 46/36/26 with 107mm bracket no problems whatever with chainring clearance. Just stepped out and took some pics while I have the wheel off. Is it me, or are CR18's just not round??? (the little bit of hop is driving me nuts)... Anyway, here's some clearance pics. 68mm, 1.37x24t is the standard English/British thread bb. 68mm wide bb shell, threaded 1.37 diameter, 24threads per inch. Not sure how the deore would work, if you have one, try it, get the right bb for it. Otherwise, if you don't have one, order a Sugino XD for 70-80 bucks with a 68x107mm English thread bottom bracket. Lickbike.com has them. They work well with a 110mm too.

pics:

http://www.wolfenet.org/gallery/surly/dscf0111
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Old 12-30-04, 10:53 AM   #3
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If you use the square taper Deore, then you can use the 107 instead of the 110 to get a better chainline. If you use the Octalink, then I have no idea.
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Old 12-30-04, 11:56 AM   #4
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I would stick with a 110bcd crankset just for the availability of rings. Price bing about the same, the XD is a 5 bolt 110bcd and the Shimano part is a 4 bolt. 110mm bcd is probably the most common out there. Besides, I think the 46 is too low, can't imagine a 44. I'll probably swap a 48 or 50 onto mine in the near future. If they haven't bought the cranks yet, go with the XD.
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Old 12-30-04, 07:56 PM   #5
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I agree with Mark. The Sugino XD crank is reasonably priced, sensibly geared, and there's all sorts of chainrings available in the 110/74 BCD sizes. I have one that's geared at 46-36-24 and it works great. Don't you have one of these on your Atlantis?
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