I've just assembled my bike, so it has hardly been ridden (less than 200km) and all the components are new.
Everything works perfectly, except an unpleasant very slight crackling sensation when I pedal gently on a smooth road.
I think I've identified that the problem comes from the chain, whose links come out of the cassette teeth in an abrupt way, these mini jumps are then felt in the crankset and the pedal.
On this video, you can see these little jumps. They're not very obvious, but you can clearly feel them when riding the bike or turning the pedal with the hand when giving some resistance to the wheel.
https://i.sstatic.net/gkYIk.jpg
I have checked my two other bikes, these little jumps on the cassette and this crackling sensation in the pedal are present, but reduced to a point that you cannot feel them with your feet while pedaling.
Since it's a 1x transmission, I thought maybe it's a chain line problem, but no : it happens even on well aligned cogs, the worst being the 5th (out of 11).
So, my question : is is a known problem that has a solution, e.g. tweaking a screw, cutting the chain's length ? Or is it just that my standards for chain smoothness are too high, maybe incompatible with 1x transmissions ?
Here are the specifications of the bike.
It's a gravel with SRAM 1x transmission. The components are standard as far as I know, you can find this setup on commercial bikes.
Cassette: SRAMPG 1130 11v
Derailleur: SRAM Rival 1 long type 3
Crankset: SRAMRival 1 GXP 11v
Chain: SRAMPC-1130 11V
Edit : I've checked the chain, it's as advertised a 11 speed, according to the "11s" mark ok the power lock.
For a moment I thought it was the dirt, but no, after a complete wash it's no better.
