i just calculated component power requirements for the steam engine idea. the drill pump was only good for 4 watts. we would need a mid sized radiator or shower pump to get 200 watts and that would cost about £100, so its out of my budget. it would be a full time job trying to put it all together!
deep cycle batteries are probably cheaper and easier for replacing the alternator
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Nissan Leaf 24kwh. Average FE = 300mpg 3.6miles/kwh (@plug)
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