11-34 gear please help!

[carbonlink]

I am trying to install 11-34 T SRAM 990 cassette to my Zion, I can't figure out if the frame is not design for this gear, I tried installing two different derailer (XT and LX) both of them touches the 34th gear, I already maximize the B-Tension adjustment checked my chain length still not good. Maybe Jenson mech can enlighten me on this issue or if anyone from this forum experience the same issue. please help! thanx.

[jeffkenn]

i am running an 11-34 with a sram x-9 with no problem.

[marks_bike]

That cassette should work fine with the 660 frame.

What are you upgrading from, 8 speed cassette and wheel? Your derailleur hanger could be out of whack, check the alignment. Also make sure you wheel is sitting correctly in the rear drop out.

[carbonlink]

Thanks Mark, I will try your suggestion. then post back. maybe your right its the derailer hanger but i will check again. actually I am upgrading from 11-32 9 speed to 11-34, with 11-32 i have no problem.