I bought my kit at Grin as well Thomas. Their customer service is 2nd to none.
That motor looks like a new design! I am using the "FAST" kit, basically the lower wind core that was meant for a smaller 24" wheel... on 16s A123 I hit 55kph unassisted, but lacks any kind of torque, at least for me.
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens