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-   -   B24 4 engine Electric conversion??? (https://www.rcuniverse.com/forum/electric-training-102/8574922-b24-4-engine-electric-conversion.html)

ftherrmann 03-13-2009 05:20 PM

B24 4 engine Electric conversion???
 
I'm doing the above conversion and will be drawing approx. 40 amps from each of two batteries. I'm planning on running about 5 feet of 12 gauge power wire to power the two motors at 40 amps (20amps x 2). Given the short length of wire I'm assuming that 12 gauge will be enough copper.. Any experience to the contrary??

Thanks,

Fred

cyclops2 03-14-2009 04:37 PM

RE: B24 4 engine Electric conversion???
 
1 Attachment(s)
This chart will help you prove your thoughts. Remember to double the distance due to + & - wire.
Also double the motor lead length. 2 wires again. GOOD connections ARE most important. That is where most people get heating & a burned open wire.

1.59 divided by 1000 =.00159 ohms. X 10' = .0159ohms X 40 amps = .636 volts.
I can live with that.....:)

ftherrmann 03-16-2009 04:07 PM

RE: B24 4 engine Electric conversion???
 
Cyclops,

Thanks for the wire chart. I did the numbers and this is what I came up with...

14 watt loss (300 watt load) for 6 feet

7 watt loss (300 watt load) for 3 feet

42 watts total loss for (1200 watt load, 4 motors)

And I'm planning on running 2 inboard together and 2 outboard together...

Thanks,

Fred


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