A hub motor is not in the cards right now.
The E-box may or may not happen. My modular design is far superior and can be configured in single stage or dual stage. So, it may be best to just build the modular system and sell it as single stage (less costly and less complicated) or dual stage (more costly with farther reduction available).
That will become apparent very soon.
I agree low weight is important for typical bike guys. That is the biggest part of this. Also, high power is important. A reliable 5kw or higher is not hard to achieve with this technology. Coupled with lithium polymer batteries, you could get away with a total drive system weight of 15 to 17 pounds with battery! That is right where I am with my recumbent.
Also, Castle Creations is just about ready to begin shipping their monster 90 volt, 200 amp ESC!
It is all coming together from a timing standpoint.
Anyway, I may fund a one-off 60 series motor for my own use and testing. That on top of a SHV200 Castle ESC and a new 1.5kwh lipo pack should put me in E-ride heaven!
The holy grail is close, very close.
The only down side is the fact that technology like this does not come cheap. David's motor will probably come in at roughly $400. My dual stage drive for that much power will be about $300 (roughly) and the SHV 200 required to run it at it's max capacity will cost $750. However, a single stage reduction will be between $150 and $200 (depending on layout), a more basic motor would be $200 to $300, and a HV110 is $250. So, you can get away with spending less for RC stuff. But, we want to see just how far we can take this ultra light weight, extremely powerful setup.
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?