On 18/06/2018 08:31, Ian Jackson wrote:
In , Indy Jess John
writes

And when I turned the petrol pump back on at the bottom of the hill,
there was no BANG.

Very ingenious! What you had simulated was what happens in modern
engines on overrun, where the control system stops feeding any petrol to
the engine when it's not needed (albeit immediately, and not after
waiting for a carburettor to empty).

One feature of the early Rover cars is their use of drum brakes with
twin trailing shoes at the front. As a anti-lock device it worked very
well, but if I used the brakes a lot they got very hot.

Maximising engine braking rather than using the brakes too much downhill
was the best way to ensure that when I really needed the brakes, they
worked well.

Jim