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Just fitted the Hope 40 T rex to a used 11-36 xt cassette.
The cassette is fine when used as 11-36 but after I've tweaked the b tension screw and put the 40t on it skips like ****.
Any ideas please?
It's a new chain, jockey wheels aren't that worn nor is the cassette.
The issue seems to be with having the b tension screw in so far to get the clearance.
I'm using an xtr clutch rear mech.
Have you tried the new chain on the cassette in 11-36? May well be the new chain and part worn cassette causing the issue. I've heard folks claiming it should be ok but I've never has a new chain work on even a nearly new cassette.It's a new chain, jockey wheels aren't that worn nor is the cassette
Tough to say without seeing it but you say the cassette is used but not worn...could be this plus as you say having to max out the B tension screw.
+1 on the worn cassette.
Adjusting the b screw has probably highlighted the issue due to having less less chain wrap.
Thinking about it, having the b screw adjusted all the way in could lead to premature cassette wear/slippage.
With the 11-40 it slips in 11/13/15.
I've put the 11-36 back on and adjusted the b tension screw and no slip.
Could be the rear mech hanger slightly out of line so I've ordered a new one.
Maybe I should splash out on a new cassette.
It won't be the hanger.
You need to try it with the cassette only but b tension screw set for 42T.
Then replace the cassette 😀
I had exactly this with a 42t one up, slipped in 11,13,15 changed the chain but it wasn't that, changed the cassette and all is good again.
Prize goes to cynic-al!
Changed the cassette and tweaked the b tension screw so the cage just clears the 36 sprocket and all is good.
Thanks folks!
I set-up my bike 1 x10 with a OneUp 42 & 16 tooth conversion. Cassette is lightly used, chain is new, & rear mech is XT Shadow+ long cage.
The shifting is good & I had to remove the B screw plastic washer to get the screw in far enough to get the mech to clear the large sprocket.
My problem is chain slippage in the smallest 3-4 sprockets. I would imagine this is due to a new chain on used cassette but the chain slips on the new 16T sprocket.
Any suggestions to solve the slip?