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Old 02-12-2023, 02:11 PM   #1
CP241
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Default Club car rev limiter

So had a few minutes today and decided to hook my meter up to the kill circuit running to the ignition coil just to see how it behaves. You could get a much better signal if whatís going on if you have an oscilloscope but was curious if my meter would see anything.

To my surprise itís much simpler than I had expected. The kill wire to the ignition coil will read small amounts of AC voltage. The higher you rev the engine, the higher the voltage goes. I donít know exactly when the rev limiter ďkicks inĒ and cuts the signal because my cart doesnít have one, but revving it relatively high it held around 6 volts AC. Lower RPM runs 2-3v and it increases as rpm increases.

How the rev limiter works is still simple. Once it reaches whatever voltage it seems cut off (relative to RPM) it grounds the wire, which collapses the field in the ignition coil and kills spark.

Attached a couple pictures to show what I saw :)

Thought it was interesting so thought I would share. If I get time Iíll hook my pico scope up to it for some better readings of the sine wave itself, but I think this demonstrates pretty well just using my multimeter
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Old 02-12-2023, 02:26 PM   #2
Springbok
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Default Re: Club car rev limiter

Good info!
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Old 03-18-2023, 03:26 PM   #3
mckittrick.joe
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Default Re: Club car rev limiter

My rev limiter was only allowing 3700 rpm. I put a .5 ohm resistor on ground wire got me to 3900 rpm.

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