The Ford Barn

Jack Innes · 01-27-2016, 01:37 PM

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An interesting bit of trivia;

The Waukesha - Ricardo Model T head is reported to improve performance without raising the compression ratio. The secret is a different shaped combustion chamber.

This was developed & patented by Sir Harry Ricardo, an English engineer.

Harley Davidson paid royalties to Ricardo on most of their flathead models starting around 1920. This may explain the success of HD.

I am currently rebuilding the engine on my 1943 Harley Davidson WLC & discovered this fact when researching heads for the HD. The combustion chamber is certainly unique in shape.

01-27-2016, 01:37 PM	#1
Jack Innes Senior Member Join Date: May 2010 Location: Brooklin, Ontario Posts: 704	Ricardo Head Sponsored Links (Register now to hide all advertisements) An interesting bit of trivia; The Waukesha - Ricardo Model T head is reported to improve performance without raising the compression ratio. The secret is a different shaped combustion chamber. This was developed & patented by Sir Harry Ricardo, an English engineer. Harley Davidson paid royalties to Ricardo on most of their flathead models starting around 1920. This may explain the success of HD. I am currently rebuilding the engine on my 1943 Harley Davidson WLC & discovered this fact when researching heads for the HD. The combustion chamber is certainly unique in shape. __________________ Jack Innes, Brooklin, Ontario