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BrianG
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Posts: 14,609
Join Date: Nov 2005
Location: Des Moines, IA
10.24.2009, 10:52 PM

Novak, I totally understand your predicament. Many companies are, shall we say, "optimistic" in the their ratings. So, Joe Sixpack looks at two ESCs and brand A looks better on paper because it is rated 1000A. Of course, he doesn't realize that the claim is ridiculous, nor the fact that no motor will pull that kind of current on a regular basis (aside from instantaneous bursts) in a normal setup, not to mention 1000A is beyond the capabilities of just about any normal battery. As I'm sure you are aware, there are many other factors that affect current rating aside from pure FET specs: circuit design, amount of copper, wiring, heatsink area, etc.

Honestly, and no offense here, I think a certain company has the right idea when they rate their controllers as "more than you can handle". As long as the ESC can handle any motor in its class and is used properly (no s-size 6000kv motors running 2s in an 8th scale truggy), it will run fine.

Also, I'm surprised no idiot has tried pulling that 540A on a test bench to see what it would do. I'm pretty sure that would result in a melted controller and an attempted suit for false advertising. Again, I am not dogging on you, just trying to watch out for one of the few US companies.
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