what kind of potentiometer should i use for a electric go-cart pedal?

All i want to know is if i should use a linear, knob or some other potentiometer... ...

All i want to know is if i should use a linear, knob or some other potentiometer…

Tags: potentiometer
Posted in Pedal Go Cart

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3 Responses to “what kind of potentiometer should i use for a electric go-cart pedal?”

1. Poor one says:

   March 30, 2010 at 5:18 pm

   It all depends on your motor. The advantage of dc motors is that you can control the speed by varying the voltage to the field of the motor which has a low current compared to the total motor current. Even a small dc motor would require a potentiometer with extremely high power rating to control all of the voltage.

   You need a shunt wound motor to be able to use a potentiometer to control the voltage to the field and still a decent size pot. Otherwise consider electronic control.
2. poncadave says:

   March 30, 2010 at 5:18 pm

   A pot will waste your battery power. Try an R/C circuit instead.
   I used a low voltage R/C where the variable resister was the pedal and it ran an on/off switch through a relay.
   Build it so you can somewhat fine tune it.
3. dmoney_sc says:

   March 30, 2010 at 5:18 pm

   You might be able to actually have a pedal, by using a rotary pot with a pulley on the shaft, and a spring to pull it back to the high-resistance end. You would need a big wirewound pot, not the kind you would use in a radio. Something like 10 ohms at 25 watts. You can get them at mail-order electronics places (probably not at Radio Shack).