I made my gravel-dream bike few month ago by hand. I followed all the user-manual sheets from Shimano in order to properly mount the GRX 800 crankset and the pedals on it. I respected the tightening torque for everything.
Unfortunately after 2 months, I started to hear a crackling noise when pushing on the pedals. At first, I thought it was a lack of grease in the bottom bracket, but didn't solve the issue.
After few days of research on Youtube, forums, etc, I realized that it was coming from my pedals that were a bit loose.
But the evil was already here: the screw threads inside my left crank arm has been altered, and even if I firmly tight the pedal, the noise is coming back after a few kilometers.
Now I have 3 choices:
- Buy another crankset, but to be honest, it's hard to find those day and it's very exepensive.
- Find a way to "repair" the threads, but I don't know any technic to do that
- Find a equivalent/compatible left crank arm.
Note that length is 172.5.
Also pedals are Shimano GR500. They are made of Chorome-Vanadium, and I don't think their threads have been altered. But maybe shall I change them as well?
Thanks for you advices!