I fabricated a brake lever mount for my 29er this weekend. It clamps to the one inch seat post right under the seat. I have room on it for a brake lever and a bell. Plus, I welded on a beer bottle opener. The brake lever mounts horizontally under the GB4 handle and I can use the brake with either hand. Squeeze the lever with the left hand,(how I always do it), or push the lever with the right hand(works, but I don’t ever do it).
Pics and a small vid are in my 29er gallery, at;
cheers and beers… Mojoe