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Old 02-07-07, 09:00 PM   #1
mobilis in mobili N
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surly crosscheck as mtb gear issues?

I have a crosscheck frame built up with flat bars and mtb componentry and have struck an issue with the front shifting.

Using a xtr M953 himount bottom pull front der and xt m760 cranks (44/32/22) I cannot ideally position the front mech ( i.e cage 2mm+- off the 44) In this position the rear of the cage hits the chainstay and the lowest I can get is 2cm above the 44. It shifts ok but.......
I know it is not right.

I have noticed shimano have a xt front der for frames with a 63-66deg angle between seat and chain stay and assume it must rotate the shift mech and cage forward relative to the seat stay. This may be a solution.

Has anyone else got crosschecks built as mtb's and how is your front shifting? Do I need to go to road ratios on the front? Will the xt front mech fix it?

any ideas welcome!
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Old 02-07-07, 09:49 PM   #2
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I have a similar setup on my Soma Double Cross, except with a 46t chainring. The DR is not off the chainring as much as yours and shifts fine, 2cm seems extreme but if it works...

My biggest issue it the DR interferes with my ability to install a rear fender. I have a 105 bottom swing that I may try on there. The current xtr top swing is to close to the wheel.
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