Uprating Series brakes

So Austin Shackles was, like

Just to add, the name for this effect is "self-servo". The rotation of the drum actually assists in increasing the pressure of the shoe on the drum, whereas with a trailing shoe the drum tends to push the shoe away. A TLS brake has very little effect in reverse, except at low speeds, which is why drum-braked m/cycles always had a SLS brake on the rear. Having had a number of bikes with TLS front brakes, I can attest that a well-adjusted TLS setup is every bit as good as a disc brake (in stopping performance, at least).