I'm so confused. I bought this chain tensioner to convert my mountain bike to single speed.
It does not fit on the rear braze on.
I tried it out on 2 other frames and they work.
I tried 3 diferent random rear deralieurs to see if they would fit onto the frame. Everything fits except for this chain tensioner.
Itd simple enough.... Brand new chain tensioner.
Mountain bike is practically brand new. Bought years ago but never saw the road. The screw in threads look good. Nothing rusted out or worn.
I compared the mounting screw to other rear deralieurs and it looks exactly the same size.
I'm so stumped. This problem is causing so much tension!