the vincents had a sls drum brake on each side of both front and back wheels, 4 drum brakes in total.
the more you look at them the better they are. the rear wheel can be removed within 60 seconds with no tools, the front is the same. you can even remove both wheels at the same time leaving it on the stands (3 of them!).
the rear hub allows a sprocket each side, so when touring you can just turn the wheel around when you reach the mountains and leave the dual carriageway. brilliant!
bullet350