Originally Posted by Velo Mule

What happened to the drum brake that you are going to rim brakes. They are lighter, but.... If the bike came with drum brakes, it not likely to be a lightweight bike to start with. What bike or frame is it? Do you have pictures? Since you are new, you need ten posts to post pictured directly, however, you could put pictures in your personal photo gallery for other to see and they can even be moved to this thread by another member.

Anyway, what do you have at the seat tube bridge? What about at the chainstay bridge. These are two possible mounting places that could work for a rim brake where the pivot is above the rim. The thing about a brake mounting point is that it needs to be rock solid and bolt on solution will need to be robust. That is not to say that something bolt-on can't be done, but it can't slip or twist. It has to be mounted strongly to the frame.

Originally Posted by Velo Mule

What happened to the drum brake that you are going to rim brakes. They are lighter, but.... If the bike came with drum brakes, it not likely to be a lightweight bike to start with. What bike or frame is it? Do you have pictures? Since you are new, you need ten posts to post pictured directly, however, you could put pictures in your personal photo gallery for other to see and they can even be moved to this thread by another member.

Anyway, what do you have at the seat tube bridge? What about at the chainstay bridge. These are two possible mounting places that could work for a rim brake where the pivot is above the rim. The thing about a brake mounting point is that it needs to be rock solid and bolt on solution will need to be robust. That is not to say that something bolt-on can't be done, but it can't slip or twist. It has to be mounted strongly to the frame.