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An old race car (Humpy)

Des West and his Appendix J 48/215 race car.
It's a good read. Ben would probably like this - if he hasn't already seen it.
http://www.thegreymo...
David

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Interesting read, amazing what they used to do. I came across an old photo of a rotary valve head in a boat from South Australia. Looks pretty wild.

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I could never understand how those rotary valve heads worked until I saw a photo of the "cam" from one.
Think of a camshaft with indents rather than lobes. No valves, no springs, no lifters.
The round of the cam cam seals the port until the indent in the cam passes the port and lets the gases in and out.
It's such a simple idea, but I can imagine sealing problems being it's downfall.
That's how I understand they work, but I may be wrong.
David

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Old is good.

Think of it like a rotary engine. Same concept.

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I ride a 500cc rotary disc valve 2 stroke (RG500), its nut's!

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