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Need help with brushless ESC

Old 01-08-2011, 06:50 PM
  #1  
rc_flyboy1
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Default Need help with brushless ESC

I have just bought a Neodym 480 1120kv brushless motor. It calls for a 30A to 45A ESC. I will be using a 3 cell 2200mAh li-po (11.1v) and a 11x5.5 prop. Will a 30A ESC do the job or do I need to go higher? I'm new to electric and I need as much help as I can get. I am using this setup on a power pod for a sailplane. Thanks!!!
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Old 01-08-2011, 07:40 PM
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dumo01
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The only way to be sure is get a watt meter and measure the current draw with your set up, but the Neodym motor looks similar to the heads Up Power 480:

http://www.headsuprc.com/servlet/the...80-Plus/Detail

At least on Jeff's setup, using an 11x 5.5 prop had a current draw of 30 amps. if your results are similar that would leave very little to no safety margin.
I would go 40-45 amp, the extra capacity will not do anything bad.
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Old 01-08-2011, 07:44 PM
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rc_flyboy1
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Thanks! I will go with a 45A. I've been looking at one but didn't know if I needed it. Thanks again!!
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Old 01-08-2011, 11:19 PM
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mclarkson
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Never hurts to have a little too much capacity.
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Old 01-09-2011, 12:35 AM
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HeliScRapYard
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Originally Posted by mclarkson View Post
Never hurts to have a little too much capacity.
second that
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Old 01-10-2011, 01:32 AM
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starcad
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I personally like overkill myself. You should be spot on with the 45A and may have a bit let over. At least it won't hurt to use the 45A.
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