Suggested amps VS real amps?

[Combatcm]

On ESC info sheets, some ESC's claim they dish out 1410amps, 8T duratrax ESC. I'm no expert, but a 15T motor puts out about 20amps, why so much overkill?

This question sparked my interest because the leapard ESC RX unit I bought for my mini T claims 75amps continuous and suggests 21 turn motos and up. However, the F1 super reverse ESC claims 13 turns and up with the exact same amps info.

[Grizzbob]

Well, when you see a huge number like the 1410 amps you mentioned, that very likely means that's the PEAK amperage the ESC can take, but it would not be able to withstand it for long at all. The continuous rating is more important to figuring out how much sustained current an ESC can take. But if you see 2 different one that claim to handle the same continuous current, but reccomend different max. turns, then most likely one has a higher peak current threshold than the other(the one that mentions a lower turn motor). Also, keep in mind that when they mention motor limits, that's basically just a reccomendation, to be honest there's NO way an ESC can tell just what wind of motor is hooked up to it, but if you use one hotter than what they reccomend, then you would definitely risk overloading the ESC & voiding the warranty(if they know you did that). I believe that an ESC's "On" resistance also has some impact on how much motor it can handle safely, & ones that have a lower resistance will likely have an easier time handling hot motors(which is why you see some of the hardcore racing ESC's say they have no motor limit). If you're contemplating buying a particular ESC & are looking at 2 of them, I'd probably go after the one that says it can handle hotter motors than the other....Oh, & btw, in truth, mod motors are actually capable of putting BIG amp draws on a system, if anything makes them jam up. When I look ata motor, I test it on my Robitronics dyno, which can read its amp draw at ALL points of its powerband & rpm range, & I've noticed that even stock motors can pull as much as 80 amps at the very peak(at 0 rpm), & I've seen 10 turn motors pull about twice that much at the same point(& then the amps drop quickly as rpm builds). A motor only draws that kind of current for a millisecond, but they do draw it, & if it jams for any reason, it can do it continuously(that's also why it hurts your car's speed to hit a wall or barrier during a race, the impact puts some strain on the drivetrain, which makes the motor's amp draw spike for a moment, & that drains more of the battery, so it'll lose some punch every time you hit things)..... :cool: