The hub to convert the VanMoof.

Specifications of the rear hub: 
Brand: Sturmey Archer
Model: A2K
Color: Black
Number of spoke holes: 36GTS
Type of brake: Disc (6 bolts)
Number of gears: 2S Automatic
Type of axle: Fixed axle 185 MM
Axle included: Yes, with nuts
Type of bearings: Ball bearings
Average weight (GR): 1098
Intended use: City
 
Data for spoke length calculations using the Sapim spoke size calculator: 
Total length of the hub (MM): 135
Non-gear side (MM): 37
Gear side (MM): 40
Hub diameter non-gear side (MM): 68
Hub diameter gear side (MM): 68
 
Link to spoke calculator: www.sapim.be/spoke-calculator