Time to dust-off this thread. A bit of a hiatus over the last couple of years, during which I acquired a *second* Judge Dredd vehicle (!) and finally had it delivered to my door in NY a couple of weeks ago.
I'm now planning how to take this forward. A good thing is that the engine and gearbox are already stripped out, so I have clean sheet and an empty box to start playing with. I'd be interested to get some advice, and answers to a couple of specific questions on this project.
First, the design parameters:
1. Top speed not to exceed 50-55mph (it's scary enough already!)
2. Given the relatively modest top speed, and the wish for simplicity in build and operation, I've made the firm decision to go with direct drive; no gearbox.
3. Curbside weight as built was around 2000kg. It's lost engine, transmission, radiator, and most of the bodywork so current weight is several hundred kg less than that!
4. Target weight is whatever.
5. Target range is as long as reasonably achievable.
6. It won't be a daily driver, but it will get used on the highway.
7. The ultimate goal is a series hybrid, with power coming from batteries, and a gas turbine generator (think EV1). It should ultimately be capable of running from either or both power sources. The turbine being capable of charging the batteries is not required but is desired.
8. The initial goal is to get the vehicle running as a pure EV, with the turbine series power capability being added later.
9. I am at this stage agnostic regarding battery technology, AC versus DC, 50Hz versus 400Hz.
First, does anyone have any comments on my thinking above. 'Crazy' and 'ambitious' are redundant; I'm well aware I'm both.
Second, can anyone recommend resources - websites, forums, project blogs, manufacturers, distributors - where I might get some background, technical information, and war stories, specifically on DIY series hybrids?
Third, can anyone tell me if there are any controllers or power systems available off the shelf that cater for, or are especially suitable for, series hybrid applications? I have little idea at this stage how to go about blending and matching generator voltages & currents versus battery voltages and currents, and switching between the two!