I am building a 4m long model submarine and need a motor to turn the prop. It has to be a large high torque, motor, preferably high rpm. The sub will have two 12v sealed lead acid batteries on board, and the stall motor current will determine their size. Does anyone have any ideas where I could find such a motor?
but it's expensive, £250 ... and needs an expensive controller too - technobots tend to be a bit expensive anyway, you could probably get something similar for 3/4 - 2/3 that by shoppping around.
The Bosch gpa 24V 750W motor (qua google) is highly regarded, around £90.
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- if you want cheaper try wheelchair, scooter or electric outboard makers, eg try "scooter motor" on eBay, several so-called "500W motors" for around £20 -
- and if you want really cheap I've always found car or lorry starter motors from a scrappie are good n' cheap n' torquey-powerful, if not always long-lasting.
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