Yes I believe they are as they have directional arrows engraved into themAre those fittings in the horizontal lines breather check valves?
Hello Rocket3,Brian, I think this one is the Corish Norvin the ex Colin Wills bike.
What always crosses my mind when looking at any form of Vincent engined special is what became of all the surplus Vincent cycle parts?That old sm tyre looks like a death warrant.
Do you have any more detailed photos of the footrest/gearchange please David?I forgot that I worked on this one years ago. David Stein was a member of the Washington, DC Section for years until he moved to Oregon. This was the way it looked after I worked on it:
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I spotted this photo of David and I like the mods he made:
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David