>>1847437Vintage frame with 126mm / 7sp spacing. I’ve had a 130mm 9sp set up for a while with space for the chain to run on the smallest cog.
The fender eyelets are level with the smallest cog so on the driveside an ordinary bolt will interfere with the chain. A flat headed screw will give enough space.
Thinking about it if I’m not fussed about using the smallest cog I could just set the limit screws and forgot about it, especially if I’m going to be fully loaded.
I’ve heard of ordinary bolts breaking whilst touring and assumed a flat headed screw would probably snap under weight.
