I saw this thread a while back so I thought I would try to experiment with flat rims.
Specs:
Width: 49mm
Catch Zone: 37.7mm
Diameter: 54mm
Half Weight: ~29.15gms
Assembled Weight: ~61.2gms
MMOI: 16146
Bearing: Size C
Axle: M4 x 10mm x 0.7mm (I think that is the proper way to say it?)
Body Material: 7075 Aluminum
Rim Material: 303 Stainless Steel
Thoughts or criticism anyone?
I also added a little groove for your nail to go in when doing Thumb Grinds. (Although I think I might have made it little bit too small.)