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Old 02-28-08, 01:09 PM   #1
Bill Kapaun
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Will these cranks work

In my search for shorter cranks, (bad knee) I ran across these "BMX" cranks.

http://www.blueskycycling.com/view_p...eProductSearch

Is there any reason they wouldn't work on my 110/74 triple on my 86 RockHopper? Both are SQ. taper.
Any caveats?
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Old 02-28-08, 01:18 PM   #2
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I don't think those cranks have the mounting holes for a 74mm granny ring, and you might need a different length spindle. Otherwise they should work fine.
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Old 02-28-08, 01:50 PM   #3
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I don't think those cranks have the mounting holes for a 74mm granny ring, and you might need a different length spindle. Otherwise they should work fine.
This would fix the granny ring issue.
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Old 02-28-08, 02:00 PM   #4
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TA makes cranks in multiple lengths, I think.
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Old 02-28-08, 02:02 PM   #5
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But they're $300!
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Old 02-28-08, 04:24 PM   #6
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Quote:
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I don't think those cranks have the mounting holes for a 74mm granny ring, and you might need a different length spindle. Otherwise they should work fine.
My granny already mounts to the middle ring, so I guess I already have a "Triple-lizer of sorts.
I don't use the granny (flat land riding), but I prefer to keep it just in case.

I kind of "half expect" that I might need a different spindle length.
Are BMX spindle lengths much different than MB spindles? I'm currently using a 122? MM cartridge.
I realize that different cranks can vary from manf. to manf. to some degree. I'm just wondering if I should expect to need some non standard (or expensive) length, or if finding the right size shouldn't be a problem.
I can "fudge" the chain line a bit toward the 2 larger rings.

Thanks for the replies!
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