8.4.1 Poor Speed Control

Most R/C servos modified for full rotation are used as on/off devices. In other words, a controller either request full speed forward, stop, or full speed backward.

While some R/C servos exhibit somewhat proportional responses when the control pulse is close to 1.5ms, the response is entirely dependent on manufacturer and model. In other words, there is no standard like 1.55ms means 50% of full speed.

A correct implementation of R/C servo control should not even have a predictable proportional response based on pulse width. As a result, proportional response can only be expected from lower end R/C servos.