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Roy Cross was the person who posted the plans for this jig in an old mph.You put the shoe on the jig. As in these pictures. Pivot the shoe and when the spring is adjusted correctly the hole on the shoe should line up with the small hole in the jig and the C11/1 pin thing should not compress the springs any more. Not a very good description. As the shoes are not symmetrical the C7 uses the other side of the jig. Somewhere someone gave the dimensions for this jig. Eugene had one made and I copied his before he scuttled off to New Zealand.View attachment 45805View attachment 45806
A lot of clutch information at the link below in an old thread and a drawing for making your own jig.Roy Cross is a very clever man, Don't think I have ever spoken to him,
I would welcome any more of his ideas on here ?.
There is a photograph of Bill's wooden jig in post #32Thanks Ed , I made mine out of Wood,
I found it does not have to be spot on,
But it's a good Base Setting.
I meant to mention before Bill. You'll get a great benefit if you can weld in squish bands before you machine your head. That's what those pistons are designed for.I was thinking more along the lines of Roy, Telling me an easy way to fit my ,
Early Christmas present ,
92 mm of Power !!, = 600 cc, Into my little engine ?. Don't tell the wife ! .