Originally Posted by
BCRider
Wmodavis, to try to add to FB's description try this.
....This would be a high helix angle of only a few degrees inclination from axial.
I think this is part of the problem when I use the terms high and low helix. By convention helix angles are measured from from the norma l or circumference, and not from the axial or or center line. Stated another way the helix angle isn't the angle of twist, but it's complement, or the angle of rise compared to a concentric circle.