The Schulze KA type ESCs had a proportional braking system. From 0.75 to 1.5mS receiver pulse width the ESC gave 0 to full power and from 0.75 down to 0.5 mS gave proportional braking. By using a suitable throttle curve it was possible to spread the braking level over the last few clicks of low throttle travel while still leaving the majority of the stick travel for the "power" management.

Schulze were aware of the problem of essentially providing governed motor speed over the whole throttle range but found it difficult to achieve this at low motor motor speeds with sensorless motors. Its a pity that more people didn't buy their products and keep them in business as I'm sure they would have solved this problem given time.

I still have a KA controller and have thought about using it again but don't like to rely on equipment that might fail irreplaceably during the competition season.


Malcolm