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Building the frame of a bicycle, starting with just a pile of tubes.

3 votes
Accepted

Where can I buy lugs for a classic roadster frame geometry?

If by "roadster geometry" you mean a slack (66-68 degree) head tube and seat tube angle I think you might be out of luck for anything commercially produced. The cost of creating a wide variety of inve …
lantius's user avatar
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11 votes
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How do I calculate the diameter of a chainring from the number of teeth?

A chainring is an n-sided regular polygon where n is the number of teeth. The side length s of the polygon is the distance from tip-to-tip of each chainring tooth. The formula for radius of a regular …
lantius's user avatar
  • 7,594