Thermally compensated brake drum - has inwardly inclined brake surface which deflects to bend outwardly on warming

摘要

The braking surface of the brake drum (13) is inclined inwards with its free end, towards the axis. The amount of inclination is such that thermal expansion due to normal braking reduces the inclination to zero, while maximum braking splays the surface outwards by the same angle. The system ensures efficient braking with only limited the brake drum face. The drum be fitted with venting slots as well as slots to control the temp. compensation effect.