Im running :
Shimano XTR M952 Rear mech
Shimano XTR M960 Cassette (Smallest ring is 11t)
Shimano XTR Chain
Race Face Evolve XC Cranks.
On an early Santa Cruz Chameleon
No matter what I do, it refuses to reliably shift into the bottom cog on the rear!
The top of the arm for the rear mech catches the frame. Ive got the b-tension screw wound all the way in to try and give the thing some clearance. To get the bottom cog, ive got to sort of hop the back of the bike to get it to clear the frame.
Any suggestions as to how I can make the mech clear the frame?
Angle Grinder?
Recheck your chain length. Bout all I can think of w/o seeing it in person. You might have 2-4 +/- links, which affect shifting at the extreme ends of your corncob. Otherwise build up a cassette with a 13T high. This modern 11T nonsense is just silly. :P
Just got "THE" best mechanic in the country to look at it.
He says the spring in the mech is weak. Early models of my mech suffered from it. He suggests finding a longer b-tension spring.
Hmmm, check that the hanger isnt damaged. Having to max out b screw settings is a bit unusual.
I had him check over the whole lot, and replace the chain for the XTR one above. His diagnosis is the mech isnt getting enough tension.
New mech time, or live with it.
Im going to live with it until I can afford X-9 shifters and mech
Street price on LX rear is $30 over here. Would have cost as much as the XTR chain. I wouldnt touch Shimano chains with a ten foot pole. Sram all the way...
There was a company a while back that made replacement springs for the XTR stuff due to this issue. Seems that in the conquest of lightness Shimano have scrimped on function.
They should stick to fishing reels.
Quote from: soopahflyI had him check over the whole lot, and replace the chain for the XTR one above. His diagnosis is the mech isnt getting enough tension.
New mech time, or live with it.
Im going to live with it until I can afford X-9 shifters and mech
if i had a geared mountain bike, id cut my tesicles off for the sram stuff...
*drool*
Chain cost me about Ã,£12. Our cheapest sram stuff is double that. And not as strong
Id love some X9 gear, but the cost is Ã,£Ã,£ atm.
Need to replace my lovely XTR shifters, as they are 2:1 ratio instead of 1:1
I say write a friendly letter to Shimano HQ UK saying how much you like your new XTR stuff. Then mention you need a new spring and could they send you one? Loads of times Ive done that and got cheap parts for free. Worth a pop?
Quote from: funkychicken9000I say write a friendly letter to Shimano HQ UK saying how much you like your new XTR stuff. Then mention you need a new spring and could they send you one? Loads of times Ive done that and got cheap parts for free. Worth a pop?
you dont ask, you dont get...
hope are good for stuff like this.
Bah, I wrote to Bontrager (Trek) two years ago about some brake shoes with bad compound (embedded grit every several hundred feet) and got a letter back "our engineers are taking care of this problem". Never asked for the shoes, never offered a replacement or a refund. Guess I *did* buy my last Trek in 92 (1200). :twisted: