Sunday, September 19, 2010

Converting a vehicle... What to start with?

I want to convert a vehicle to an EV, but the question is, what vehicle?

In theory, something slim and sporty would be best, for aerodynamics and efficiency. But sports cars have a few drawbacks:

  • Not much in the way of room to store batteries
  • Not a lot of weight capacity for carrying batteries
  • Expensive to buy.

I'd love to convert a Citroen, with their hydropneumatic suspension system making for a silky smooth ride, along with being able to carry the load. However:

  • Rarer than solid gold rocking-horse excrement here in Canada
  • Mechanically complex
  • incredibly hard to get parts for.
  • In pre-XM models, the hydraulic pump has to be powered too.

So, what will I do? The answer may surprise you.

A pickup.

Yes, that's right, a pickup truck. A small one, like a Chevy S10 or a Ford Ranger (Not a Dodge Ram or an F1/2/350).

"Why on earth would you do that?", I hear you ask.

There's a few good reasons.

  • They're cheap to buy
  • They have a high carrying capacity
  • You can use the masses of dead space under the pickup bed to store your cells
  • They're cheap to buy
  • They're usually rear-wheel drive, so making a Direct Drive pickup would be fairly easy
  • With Direct Drive onto the rear differential, the entire engine compartment would be virtually empty, more space for cells
  • They're cheap to buy
  • Replacement, and custom, parts are very easy to get hold of (and relatively cheap)

Yes, I know, I'm a cheapskate. But when you're broke 90% of the time, it's to be expected, really.

So, what am I going to put into this thing?

Hopefully the local ReStore has an ACIM I can snag for dirt cheap and use, and when PaulMHolmes gets his finger out and gets his AC controller plans working and available I'll grab those and make myself a controller for it. Then it'll probably be a matter of getting some 12v cells until I've stashed enough to splash out on a LiFePO4 pack (or something better – Kokhams maybe, or A123s?)