Throttles, how they work?

[LI-ghtcycle]

I just had a thought, I cannot for the life of me remember if I noticed the correlation between amps drawn and voltage used while using a typical hall throttle.

My understanding is that the throttle through the controller determines what voltage the motor "sees" and I know that the harder the motor is working, the more amps it draws, and the more voltage sag I see, however, does the throttle control both voltage and amps the motor "sees"? Or is the amp draw just a reflection of the resistance met when turning up the throttle, to achieve desired voltage, translating to actual speed?

For example, I may roll on my throttle slowly, and the amps stay below 15 on flat level ground as I gradually turn it on and reach top speed with-in one mile.

Conversely, if I whack the throttle really hard and fast to maximum, the amps will spike to maximum allowed by the controller, and I will reach top speed much quicker.

So my question is, does the throttle directly control amp draw in any way, or is it just a result of load, or resistance to the motor being given an increase in voltage via the throttle/controller?

 

[MadRhino]

Your throttle does not control the power. It could though, with the new CA there is a mod to wire a 'torque throttle'. Very interesting option, but I had not found time to explore this yet.

 

[fizzit]

Your throttle just controls what % of the time your motor receives power

 

[amberwolf]

Yes. Essentially, on the typical ebike controller, it just controls what the average voltage on the motor is, by controlling the PWM %.