[J57ltr]

Romano my head may be bigger, but I doubt my brain is, it’s called Homer Simpson Syndrome.


Brian I understand how shorting the phases would cause the braking action. If fact this is how I thought the system worked until Patrick said otherwise. On my old Brushed Streak ESC there was a lone Fet that was across the motor terminals that would do the braking function. But on the brushless system since the Fets are arranged in an H bridge configuration you can pretty much do whatever you want through programming on the ESC.
I am guessing that what has to happen is that if the motor back EMF is greater than battery voltage then you commutate the phases until the voltage drops below that value then switch to just shorting the windings until the car comes to rest, or does is there a way to shove the current through the bridge even though the voltage is not high enough?

I have to admit that I was pretty shocked that when I tested by strapping my meter to my rustler that I even got a .5V increase since the Kv for the motor I was using is near 6K and I was using such a low voltage pack, and the brakes lock up so easily on it. I was only able to get this result after running it to top speed and applying the brakes as hard as I could without locking them up. Later when I tried it again I couldn’t get much of a result, mostly because the voltage of the pack would rise when it was at rest. This was the reason I didn’t use a fresh of the charger pack since the voltage would constantly drop.


Jeff