biker222

I developed a creaking noise recently while using road bike on a fluid trainer that only was present during riding out of saddle in higher gears.
Checked crank arm pinch bolts and pulled seat post out and re-lubed , but problem persisted.
Checked 105 cassette lock ring tightness with torque wrench and found it had loosen up about 3 notches. Torqued to 40nm.
Rode out of saddle in higher gears and creaking disappeared. A little surprised lock ring would loosen if torqued properly.
Checked my rear wheel that I use for road riding and 105 cassette lock ring was also loosened a couple of notches.

Moral of story check everything periodically even if torque to specs.