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Sources for large electric motor
"Steve Lusardi" wrote in message ... Michael, You should seriously consider Andre's advice. I know it isn't a 12V solution, but it is the best one especially if you should use the complete drive and control electronics. They are available used in junk yards at scrap prices. Contact me off-line if you want more info. Steve "Michael" wrote in message . .. "AndreL" wrote in message ... Find a used GE engine from a Golf cart. Some provide 11 HP at 48 volts while the most common provide 3 HP at 36 volts. This is way enough for your submarine because compare it to a 15 ft aluminum boat with two anglers aboard - a troller engine can push the boat easily. Just by curiosity is this remote controlled or wire controlled ? With a camera or for fun ? do you have a website that shows construction ? "Michael" wrote in message ... Hi, I'm building a model submarine it will have a displacement of around 500kg and a length of 4m. Having worked out a rough idea as to the size of the motor required, 3hp. I'm now looking for suggestions. Sites like technobots don't stock ones large enough and so I'm struggling to find an answer. Then there is the matter of how to control the speed. Ideally I'd like proportional control. So, does anyone know where I can find a large enough motor, ideally with the electronics to control it? The onboard power will be provided for by two 12V batteries, of which the AH is still undecided. Thanks Michael Remote control, with a camera and for fun. No, not yet, and progress is very slow, send me an email at SubAquaModel (join together) and I'll update you if you like. Planned finishing date is late 2007, so a while yet. Thanks for all the replies, I get back to you about what I decide Thanks for all the comments It's interesting: you talk to the boat people, they suggest troller motors, talk to model engineers, they suggest 3 phase motors, talk to robotic engineers they talk about using somekind of scooter/electric wheel chair, talk to model submariners they suggest motors for bikes. There is no common source shard by any of them. So I have decided why not add another possilbility of my own? 10 1/4Hp motors, all sharing same shaft. To control, step the voltage up/down. So have 8 6V batteries, them connect them in such a way, so that the draw on each battery is the same. Very cheap, and should work. And no complex controllers to interface. Only problem is that isn't that efficient. Michael |
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