Electric hub that works with discs?

[BIG-E]

Is there an electric hub that has mounts for a disc rotor?

[HalfLifeT1]

Both crystalite and Bionx have provisions for disk i believe. Thinking of adding a kit?

[BIG-E]

I'm hoping to get a Big Dummy when they become available, and it'd be nice to have some extra boost for getting up hills with a big load. Stoke Monkey is a bit spendy, plus I like the idea of having the front wheel powered for extra traction.