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GriffinRU · 05.06.2007, 07:10 PM

Rene correct, when you apply brakes ESC shorts the windings and can do that with bursts simulating ABS...

Also each FET has a built-in diode which works as an H-bridge with other FET's, thus charging battery and cap if generated voltage higher then battery voltage( accelerating going down hill or bursts after jump). Caps usually take care business here and if connection between batteries and ESC is not good then often fail...

So, when you use motor as a brake then you put motor in bad situation because now it need to absorb kinetic energy of rolling vehicle (mv^2) and do that fast. Think, you Ok with accelerating within couple seconds but you would like to stop on a dime, right? Do the math then.
For controller it is up for caps how good they are and how good is battery connection.

	(#4)
GriffinRU RC-Monster Aluminum Offline Posts: 748 Join Date: Oct 2005	05.06.2007, 07:10 PM Rene correct, when you apply brakes ESC shorts the windings and can do that with bursts simulating ABS... Also each FET has a built-in diode which works as an H-bridge with other FET's, thus charging battery and cap if generated voltage higher then battery voltage( accelerating going down hill or bursts after jump). Caps usually take care business here and if connection between batteries and ESC is not good then often fail... So, when you use motor as a brake then you put motor in bad situation because now it need to absorb kinetic energy of rolling vehicle (mv^2) and do that fast. Think, you Ok with accelerating within couple seconds but you would like to stop on a dime, right? Do the math then. For controller it is up for caps how good they are and how good is battery connection.