D-tub Electric Drive System

The D-tub will be steerable from both from the driver's seat (for plausible on-street legality), as well as from the tub (for off-roading), with brakes and e-brakes at both locations.

Motor
I had a 300V high-power electric motor, but have opted to sell it and buy a 24V electric motor, mostly for electrical safety.  I have access to a controller that will run at 650amps at 24V, which should be enough for low-speed cruising.  This will give me an idea of the power needed for 25 mph travel, the minimum I think is needed for on-road travel, as well as whether it would be a good idea to go 25 mph in a hot tub.

NP205 divorced-mount transfer case will mount about 30" forward of the rear axle, and the 24V electric motor will go just behind that.  This gives me high gear for on-road use, low gear for hills, and neutral for towing.  No transmission will be used.

Steering
I hope to eventually have a quick disconnect on the steering wheel in the driver's seat, and this will hook to an extension shaft with two u-joints so that the tub

steering wheel quick disconnect: http://store.summitracing.com/egnsearch.asp?N=700+4294844287+115
steering u-joint: ???

Braking
I want to be able to drive from both inside the tub (for off-road use), as well as from inside the driver's seat (for on-road use).  I also want both locations to have "live" brakes, as a 9000 lb vehicle   The idea right now is to tie into the trailer braking system, which will utilize the power brakes on the system.  See towing for more about the braking system.

Another option is cutting brakes, which have no reservoir on the cylinder, so there can be multiple cylinders (but reservoir has to be next to the vertically highest brake, right?)

http://www.bugsandbuggies.com/Neal_Ind.asp?Subgroup=Billet_Single_Cutting&Group1=Cutting_Brakes&Group_Name=Cutting+Brakes