I’m running XT crankset, XT Shadow mech, Shimano HG74 10 spd chain, DT 370 SL rear hub. All with about 400 miles on the clock.
Problem.
Under load in the middle ring at the front and a high gear at the back, that is an almighty grating type noise, as soon as you put less power through it goes away and runs smoothly.
Also if you reverse pedal the chain jumps down the block.
The rear mech isnt bent (from what I can tell) the gears are set up correctly, the chain lubed correctly etc. The cassette wobbles very very slightly on the freehub body.
Causes?
All I can think is that either the freehub is knackered, or going? I’ve never had a DT hub before..
The only other thing that I did stupidly a few weeks back was that I put the chain on wrong! Poor description, but I looped the chain round the outside of the piece of metal above the final ‘s’ of sjscycles in the pic below. I then did a 30 mile race with it like this. Afterwards when I realised, this piece of metal is now pretty worn out, and the chain was highly polished where it had been rubbing.
So is it worth changing the chain to see if this solves it?
Ta