From the little I've read, there seems to be
the parameters number of spokes (holes in rim
and flange), then the number of crossings, and
if they go over and under.

The Torpedo coaster brakes I have examined have
36 spokes/holes (2x18) and are 3x with one
twine, 2-over-1.

I don't know if the circle's 360 degrees has
anything to do with the number 36 in
particular...

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