multibank?

[Mike Cecil]

Another 'multibank' was the Perrier-Cadillac Type 2, that linked three Cadillac V8 engines via a gearcase to a common, single output shaft. Dry sump engine with an external oil tank and scavenge pumps in the common trough. It was used to power the Australian AC3 tank. The engines were timed to provide the smoothness of a 24 cylinder engine. Invention and manufacture were more or less contemporaneous with the Chrysler multibank. Maybe they all read that article as part of their individual research?

Mike

[Paul Singleton]

I wasn’t aware of the Cadillac variant. Always amazing to learn something new.

https://www.macsmotorcitygarage.com/...lac-triple-v8/

[Mike Cecil]

Covered in some detail in my book 'Sentinel: The Australian Cruiser Tank'. https://www.trackpadpublishing.com/s...ea2yXls91XK2ow (yes, yes, shameless self promotion!)

A very interesting engine. Designed by a French aeronautical engineer, Robert Perrier. One survives in the prototype AC3 held in the collection of the Australian War Memorial in Canberra, Australia.

Full marks to the Macsmotorcity garage article: it's right! Nice change for the internet: much of the 'stuff' on the AC series tanks is far from accurate.

Mike

[Perry Kitson]

Counterweights appear to be similar to those used on radial aircraft engines.