Tried to figure out what is this sound, but failed.
First thought it was derailleur hitting jockey wheel, but apparently not.
It looks like frequencies of the sound is matching with the rotation of wheel, but if I rotate the wheel backwards and I don’t hear this sound. Do you guys have idea of where this sounds coming from and how to fix it?
*we asked for our local brompton junction to fix this, and it was gone for few hours and then came back. We don’t know what’s going on at this point!
Weird noise from 2 speed rear chain
byu/Maleficent-Ad-904 inBrompton
by Maleficent-Ad-904