It can be done, but it will be much more expensive than just fixing or replacing the engine.I have a miata NC with some engine trouble and I am considering a conversion to EV.
I'm sure that there have been some. In this forum, the RX-8 (which has essentially the same chassis design but with a different engine and body) is more common... mostly because RX-8 engines die.Is there any examples of NC conversions?
No more complicated than other similar cars, except for the problem of fitting in the battery. As with almost any other car, there is no convenient guide.Is it complicated?
I agree that space for battery packs is the biggest challenge, and that unless you understand your performance (including range) target, it's impossible to make rational design decisions.The challenge with a Miata is in finding space in the car for the batteries...
You don't tell us your range or performance goals...if you want to go up and down the driveway once between charges, not so difficult.
With a reasonable power requirement, small car, and modest range expectation, it should be possible to meet the energy storage requirement with one complete battery pack (one complete set of modules) from a typical plug-in hybrid such as the Chevrolet Volt or Chrysler Pacifica. If you use a low-voltage motor and typical corresponding controller, the modules would need to be configured in two parallel strings to have a suitable operating voltage. Another option is about half of the modules from a battery-only vehicle such as a Nissan Leaf.In terms of performance I would like to aim at: 70hp, 50miles range, top speed around 60mph...
The Leaf voltage isn't that high.I have looked into the leaf based conversion but I am afraid of three things about that: very high voltage, liquid cooling system and inverter to match motor.
I live in Silicon Valley and have not found a garage that could help me on this, I am an electric engineer but really need help in the mechanical part design.
I have looked into the leaf based conversion but I am afraid of three things about that: very high voltage, liquid cooling system...
"High" is a relative term. The Leaf voltage is no higher than other common current EVs - they're all nominally about 360 V, or a little higher depending on cell chemistry and cell series count (typically 96). This is much higher than an ordinary car electrical system (12 V) or a golf cart (48 V), but once you're up to the 120 to 144 volt range which is typical of traditional DIY conversions, is 360 volts really a problem? Dramatic and scary things can happen even at 120 volts when it is delivered by a battery which is capable of providing hundreds of amps.The Leaf voltage isn't that high.
The Leaf battery is air-cooled.