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Old 10-09-2009, 03:12 AM   #1
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Need ESC help

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I am TRYING to finish this Coast Guard Lifeboat. It has the twin "no name" 540 brushed motors and I don't know how I should hook them up. I have seen some esc's that can handle two motors with twin 7.2 batteris in parallel but they seem a little fancy (read: expensive) for what I need. A friend suggested I use two controllers so that can control the props individually. That would be cool...but necessary? And then there is the whole water cooling system? Is my boat really gonna need all that? Can a single controller be wired to handle both motors? I assume that a brushless esc will not work for a brushed motor?

Sorry for all the questions, but I'll be the first to admit I am making this up as I go!

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Old 10-09-2009, 07:11 AM   #2
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Re: Need ESC help

Brushless will not work (but I've seen a few hybrid speed controllers that will run both)
Dual is nice for turning
otherwise, if you want speed and power you would need a heavy speed control for two motors (doesn't someone make these fro rock crawer type RC trucks with two motors?)
Two smaller speed controllers would probably be cheapest and a Y harness if you only want to use one radio channel

nice boat.
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Old 10-09-2009, 11:06 AM   #3
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Re: Need ESC help

any brushed controller capable of handling the amperage of the two motors would work. you only need one controller and you can wire it two ways....parallel or series. a 40m amp with those motors should be enough.

in parallel both motors will see the total voltage and each will take what amperage it needs. In series each motor will only get half the amperage that they would see in parallel.

so you have the choice, depending on your battery size, to run fast for a shorter time (parallel) or slower for a longer time (series).
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Last edited by astrofler; 10-09-2009 at 11:09 AM.
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