Lovely design, keyed magnets, inrunners:
Joby Motors
The motors are a spin-off from a flying windmill development:
Makani Power
For high detail pictures and video see this discussion in the RCG 'Giant Scale' subforum:
5, 10, 15-20kW motors - RC Groups
Vriendelijke groeten
Ron
diy brushless motor group RC flight club e-flight calculator home.kpn.nl/ronvans