Computing with cams: Analog fire control computer video.

[Richard Bartrop]

How it was done before electronics.

 

[Ace-Garageguy]

Fascinating stuff. It's good for people to know what could be "computed" with mechanical systems prior to the electronic revolution.

Porsche's (and others) timed mechanical fuel-injection systems are another good example, with injection timing, squirt volume, and compensation for atmospheric pressure all controlled mechanically, changing constantly as the engine is running, all the while also responding to engine load and throttle opening.

 

Edited January 22, 2024 by Ace-Garageguy
CLARITY

[Richard Bartrop]

Probably derived from this.

 

[Ace-Garageguy]

Here's a short article on the Spica timed mechanical injection used on US-market Alfa Romeos from '69-'81.

https://www.roadandtrack.com/car-culture/a26665/mechanical-fuel-injection/

[Ace-Garageguy]

A little history of the Bosch, Spica, Kugelfischer, and Lucas timed mechanical injection systems...

https://www.roadandtrack.com/car-culture/a45876019/mechanical-fuel-injection-explained/

"The logic section is essentially a mechanical computer."

Edited January 22, 2024 by Ace-Garageguy