I have this exact same issue. For anyone thinking that this is the bottom bracket, I don’t think it is… I have tried 4 different bottom brackets to no avail. The most frustrating thing for me is it that it rides beautifully for 15-16 miles and then the noise comes back. Seems to happen after a number of climbs. Some of the BB’s and steps I’ve tried below: -
-
2x Ceramic Speed DUB BB’s
-
1x Stock SRAM DUB BB (SRAM won’t talk to you unless you have all components SRAM)
-
Current BB is a BB Infinite module - I will be keeping this as its awesome (just a shame its not fixed the issue)
-
Application of locktite to preload tensioner, and crankset bolt (instead of grease)
-
Out of desparation I also tried a tiny tiny amount of WD40 to the pre-load area (careful not to apply excessively. Oddly, this fixed the issue for a few long rides - until it rained heavily and then it came back.
-
I have also tried a new Front Derailleur (for another mental issue with this groupset) chain constantly coming off the big ring - regardless of FD alignment / Setup. As a side note the only way this was ‘fixed’ to an acceptable level was by messing with the spacers outside of what BB infinite say should work.
I’ve had a number of highly regarded professional mechanics look at this issue and none of them know what’s going on.
I’m determined to get to the root of this issue - it’s a new Tarmac SL6 S-Works, SRAM Red AXS, BBInifinite Bottom Bracket.
I’ll post back with updates but if anyone has further suggestions I’m all ears.