XO-1 spur-to-pinion adapter that includes the "Cush Drive"?

[Lizard]

Sounds like a good idea and should be possible. I can slide the Cushdrive right over the shaft of the Turnigy motor :)

Hole is 6mm and I would say there is enough material to bore it out to 8mm if needed.
Pin diameter is 2.5mm. Width of the whole assembly is 21mm, but the bearing seat on one side could be cut-off, then it would be 16mm.

Cushdrive assembly (without shaft) with 46t spur is 28g.
For comparison:
35t Kershaw 5mm spur is 52g.
34t XO-1 spur is 36g.
Aluminum spur adaptor with 36t Revo 3.3 plastic spur is 14g.