Hello,
Sorry for bad mic quality…
The front crankset is making this cracking noise on 2 lowest gears. Even though it's 1x I don't think it should be making this kind of sound?
It was doing it from the get go, the white marks is chain wax. Some other people who got the same bike said that their doesn't really make this kind of sound.
Shimano GRX 600 1 x 21
FSA Omega 42t/175mm
KMC 11 speed chain
Front crankset cracking noise on new 1×11 bike
byu/AstroLog23 inbikewrench
by AstroLog23
2 Comments
Visually there’s nothing out of the ordinary as far as I can tell.
Are you sure the noise is coming from the crank area? In your first video it almost sounded as if the chain wasn’t properly routed through the derailleur. Can you post pictures/a video from the cassette/derailleur side?
If the noise is coming from the front side, a picture of the chainline would be helpful. Another easy, visual check is if the spacers at the bottom bracket (if there are any) are installed as prescribed in the bottom bracket manual.
I, too, suspect you’re hearing the chain when at maximum deflection (“chainline issues”), and you’re hearing the chain sliding/grinding/popping off the teeth of the chainring, which is exacerbated by the fact that the GRX 1x chainrings are narrow-wide and so are making a lot of contact with the inside faces of the chain plates during the tooth departure.
If I am correct that is the primary source of noise, the noise will diminish as the edges of the teeth self-polish, and will be gone by the time the teeth lose their black anodization.