Outer diamond primary

[DANPATCH]

How do you tell the Outer diamond primary original from reproduction .I thought it has something to do with how the diamond was stamped.

[Rubone]

The way the diamond is stamped is one thing, the depth and shape of the sprocket clearance is another. Originals have a pronounced radius where the diamond meets the domes, aftermarket are straight. The front sprocket stamping is a very shallow domed area, aftermarket are taller and more square sided.

[larry]

Has anyone ever reproduced a cover with the correct dome?

[Jerry Wieland]

Has anyone ever reproduced a cover with the correct dome?

If someone has I have never seen it. Jerry

[Chris Haynes]

As far as judging on a restored machine goes, if it is the best reproduction available it is fine.

[EricOlson]

Here's a picture showing the area Robbie is talking about. You can see the difference circled in red.

Primary differences.jpg

[pan620]

As far as judging on a restored machine goes, if it is the best reproduction available it is fine.

So what is the best reproduction that is available