Bicycle Mechanics - Will these cranks work

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Bill Kapaun
02-28-08, 12:09 PM
In my search for shorter cranks, (bad knee) I ran across these "BMX" cranks.

http://www.blueskycycling.com/view_product.php?pid=4187&ref=GPS&utm_source=GoogleProductSearch&utm_medium=feed&utm_campaign=GoogleProductSearch

Is there any reason they wouldn't work on my 110/74 triple on my 86 RockHopper? Both are SQ. taper.
Any caveats?

Svr
02-28-08, 12:18 PM
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.
Wordbiker
02-28-08, 12:50 PM
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 (http://www.interlocracing.com/triplizer.html) would fix the granny ring issue.

tellyho
02-28-08, 01:00 PM
TA makes cranks in multiple lengths, I think.
tellyho
02-28-08, 01:02 PM
But they're $300 (http://sheldonbrown.com/harris/french-cranks.html)!
Bill Kapaun
02-28-08, 03:24 PM
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!