Posted by Ken Meier on September 02, 1999 at 19:34:32:
In Reply to: operators manaul posted by Pete Gauchat on July 23, 1999 at 06:49:02:
I have a Newark hobber and would be happy to give the formulas if they match up.
I'm at home now, but by memory, my machine is 1:24 or 1:12
According to the book, the index ratio is either
80/32 x T/60 or 80/32 x 2T/60
The differential is: cosec helix angle times pi divided by the pitch.
hope this helps,
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