main calculator | triplet lacing calculator

Rim Dimensions

Enter values manually, or add rims
to your bench to select them here.

Hub Dimensions

Enter values manually, or add hubs
to your bench to select them here.

Build Parameters
ERD Center-flange distance # Spokes
Drilling offsetA positive value will move left nipples to the left or right nipples to the right. (Negative values do the opposite.)
 Flange pitch circle dia
Cross patternIndependent left & right values. Decimal cross values are handled just like Damon Rinard's spocalc.xls, but are not currently supported by the rendering engine.
Spoke hole diameter
Hub offsetA positive value will move the entire hub to the right of center.
 - ICE trike = 6mm
 - Pugsley = 17.5mm
 - Moonlander = 28mm
Rim FlipAuto will flip your rim to the strongest orientation. (only affects asymmetrical rims)
Left Right
Spoke length
Tension distribution
Spoke head clearance
Bracing angle
Wrap angle (at rim)
Total angle at rim
Effective tangential PCD
Flange exit angle
Theta angle
wheel dish rendering spoke lacing rendering (left flange) spoke lacing rendering (right flange)