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 I wonder what would be more energy efficient, in terms of Amps. 4 electric 
motors direct-driving props, or two electric motors each driving 1 hydro pump, 
with each pump driving two props? 
Also, I've been thinking about gearing and props. An elecric motor driving 
a shaft to a ring-and-pinion gear which turns a large, multi-bladed prop. 
Exchanging torque for speed, since we shouldn't need fast-spinning props on 
slow-moving subs. I'd be thrilled if I had a sub that went 5 knots even. I'd be 
terrified of currents, of course. I've been in currents that were considerably 
greater than 5 knots while out on the boat. 
In a message dated 4/10/2006 5:32:39 PM Eastern Daylight Time, 
ojaivalleybeefarm@dslextreme.com writes: 
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