If the owner-mechanic is clueless ...


or expects their brakes always to stop them as abrubtly as a stick in your wheel, or running head-on into a wall



the old Arai tandem drum brake was very large and had a really big heatsink all around the drum.

it was brake number 3 on tandems a companion to rim brakes ..

Purpose was add some drag on downhills rather than stopping , the cantilever brakes were for stopping