Somewhere from the non-drive side of the drivetrain is coming loud squeak when I pedal hard.
The story is long. First I threaded the BB-ES25 incorrectly, and had to spend half an hour with a file to remove the 2 outermost threads (Conclusion: Never torque anything into aluminum with a wrench. Torque it by hand, then tighten by wrench.)
Then I installed my octalink crankarms, but lost the washer between the non-drive side fixing bolt and the crank arm.
After a couple of weeks, the BB lockring came loose, getting stuck against the crankarm and forcing me to carry the bike home.
After tightening it a lot*, another week passed and my non-drive side crankarm fell off. I tightened it a lot after that.
Recently I purchased a torque wrench and re-tightened everything. The BB lcokring to 70Nm and the crankarm fixing bolts to 50Nm.
There is still squeaking, and I guess it is not coming from the left pedal. What could be wrong now?
After fixing the torque values, a week passed and now the creaking is just a memory.