I have a small gas powered UTV/buggy (think all-terrain golf cart). It has a Chinese v-twin engine and despite countless hours of fiddling with the carburetor I could not get it to run right. Much research indicates the carbs on those engines are just crap. So I replaced the stock intake manifold with a pair of adapters I machined, and put on dual flatside carbs. It runs much better now, but there was no good way to tie in the original mechanical governor. I still want to limit RPMs because it has the original valve springs and flywheel and shouldn't be taken above 5k RPM in this configuration.
So what is the best way to limit RPM? I will have some kind of electronic controller onboard (PLC, Arduino, or other programmable controller) so I will be able to do this electronically if that makes things easier. Can I ground the coils (in the same way the kill switch works) if RPM >4500? Or will that cause other problems? I could override throttle with a servo or something, but that would be more complex. I would prefer a simpler solution like grounding the coils provided that won't cause problems.
So what is the best way to limit RPM? I will have some kind of electronic controller onboard (PLC, Arduino, or other programmable controller) so I will be able to do this electronically if that makes things easier. Can I ground the coils (in the same way the kill switch works) if RPM >4500? Or will that cause other problems? I could override throttle with a servo or something, but that would be more complex. I would prefer a simpler solution like grounding the coils provided that won't cause problems.