Evening all, right getting a little fed up of an annoying grinding/clicking rumbling noise I can feel through my drivetrain.
Newish 10 speed cassette
newish xt deraileur
New mech hanger
Gears aligned within an inch of their lives! And repeated more times than I care to remember (following park tools guide). Gear shifts are perfect.
Bottom bracket seems ok, cleaned and tightened and spins freely with no noise
Chainset looks fine to me
Hope pro 2 hub cleaned and greased
Vault pedals cleaned and lubed
Wheel hubs spin freely
Pretty sure chain not rubbing on front mech as grumbling noise can be felt when chain line at its straightest and chain running in middle of front cage (ie no metal to metal contact).
It's all 10 speed stuff, kmc chain <200 miles on it.
Really a bit stumped! The grinding feels like the chain is rubbing on the inside face of rear gears but it's not (well on the stand anyway). Seems to happen under light load so kind of rules out deflection of rear triangle. Possibly gets worse with water spray but this may be coincidental.
Any other suggestions of what to look for? I have a new bottom bracket on its way as maybe it's only grinding under load (but spins perfect on the stand with chain off)
Other thoughts point to a stiff link in the chain but it's new, cannot feel any and had it soaking in engine oil to see if this helped - nope.