Quote:
Originally Posted by Mark McM
The spoke angle at the hub is:
Angle = (720 degress) x Crossings / Number of spokes
For 24 spokes, 3 crossings means that the spokes will be at 90 degrees, or exactly tangential. As Old Potatoe said, this will result in the spokes overlapping a lot of flange. For 24 spokes, 2 crossings is the most common (60 degree angle).
For 20 spokes, 2 crossings means that the spokes will be at an angle of 72 degrees. This is more possible, but there would still be a lot of flange overlap. For 20 spokes, 1 cross is the most common.
Here's a list of the common crossings vs. number of spokes:
36 spokes: 3 or 4 cross
32 spokes: 3 cross
28 spokes: 2 or 3 cross
24 spokes: 2 cross
20 spokes: 1 or 2 cross
16 spokes: 1 cross
12 spokes: 1 cross
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All true but one cross? Might as well do radial, 1cross really does nothing compared to radial...or maybe 1cross, all heads in....hmmmm.