For cross, the tiny ring on a MTB crankset would be useless since it will always be faster to run than to spin the granny gear, however I think the middle ring (32t) and big ring (44t) would provide a nice gear recuction compared to the usual 36-48 that comes stock on a cross setup, without sacrificing too much from the top end. This would prove especially useful on muddy or snowy courses.
I would personally leave the front alone and swap in a mountain cassette and rear derailleur because this would be simpler to do, would provide a smilar gear reduction and would cost much less. If we're talking new parts at MSRP, that's $460 for XTR crank vs $310 for XTR Rear der + cassette.
If we're talking 9 speed here, this will work...if your shifters are 10spd, then you're stuck with DA in the rear
Last edited by xlntRider79; 01-15-06 at 09:30 PM.
Reason: If we're talking 9 speed here, this will work...if your shifters are 10spd, then you're stuck with DA in the rear