I have done a lot of research, and understood very little, but we thought we would start at teh drive motors and work backwards, with a view to place an order early next week.
I have taken your advice and am looking at either
ampflow A28-400-g or
NPC's...

Has anybody any advice on the NPC T64's VS the T74's? They look very similar in price and the T74's seem to have the edge in performance on paper?

I know there are a lot more factors, but will two of these be enough as a drive system? As were a crusher, we will have to be a little.. pushy.

I may still possibly run a 48v drive system if the motor characteristics on the A28-44-f48's can be used on the pump, as this will reduce the spares cost justifying the price increase and bringing it just within budget.


Looking at speed controllers, is there any advantage to single channel over double channel? (does it give redundancy in the event of failure, or just introduce a new part?)
Does channel mean what I think it does, that I will need one for each 'wheel' if single, or double can handle both?

We are probably looking at the Roboteq, though I have read some positive things about the ampflow VEX

Sorry for the massive amount of questions!