Governor ADJUSTMENT

Squiddy202

Squiddy202

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I was looking at getting a little more speed out of my engine to fully use my 30 series. Someone mentioned you can adjust a governor instead of fully removing it. Someone also said that bypassing while leaving governor parts installed makes a grenade. If it is governed to like 4500-5000 range then can that little plastic gear go boom easier? What causes the shrapnel? Does it make more sense to just remove it? How do you know if valve float occurs? In another closed forum I saw that that governs your engine but also caused a bit of damage. If I remove a governor I would like to be able to notice it and back off the throttle.

Side note:
Got my CVT working, it went up to 28 downhill with me reaching back and pushing the lever. Turns out my throttle pedal is also hitting the steering rod so I gotta figure that out. With any luck a full removal (if it makes sense) would decrease needed travel to achieve full throttle.
 
Edwin Spangler

Edwin Spangler

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Watch a video on how valve float works, youll have a much better understanding. Its when the engine is running fast enough that its already on its next revolution before the valve spring has time to close the valve back up. It ultimately leads to the valve(s) being stuck open, never getting to close. Stock valve springs will float around 5k but "using that as a limiter" is asking for catastrophic damage.

As for adjusting the gov. Its ok if you dont plan to drive the kart at high RPM a lot. If you want frequent high RPM, just remove it. It IS plastic and it WILL grenade like youre worried about.

You dont need anything extra AT ALL to remove it. You can even rearrange the throttle linkage to use the existing cable.
 
Sparkwizard

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The governor has a small shaft that comes out of the block. There is long arm clamped onto that shaft. When you pull the throttle lever, it pulls a spring that moves this governor lever. The governor lever opens the carburetor. As the engine revs up, that lever pulls back on that spring and regulates the engine speed. I'm not familiar with your specific engine, but most have a line of holes in that governor arm. If you move that spring to a hole farther away from the governor shaft...it will have more leverage and allow quicker throttle response and more RPM, but still retain the governor. All of my 4 stroke engines are set up like that. Some even have slightly stiffer springs installed. I sometimes have children around and they need governors.
See that screw below your throttle cable? It is a throttle stop. It limits the movement of the throttle lever. Remove it.
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Squiddy202

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Sparkwizard said:
The governor has a small shaft that comes out of the block. There is long arm clamped onto that shaft. When you pull the throttle lever, it pulls a spring that moves this governor lever. The governor lever opens the carburetor. As the engine revs up, that lever pulls back on that spring and regulates the engine speed. I'm not familiar with your specific engine, but most have a line of holes in that governor arm. If you move that spring to a hole farther away from the governor shaft...it will have more leverage and allow quicker throttle response and more RPM, but still retain the governor. All of my 4 stroke engines are set up like that. Some even have slightly stiffer springs installed. I sometimes have children around and they need governors.
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So then I presume that wouldn't detonate the gear inside? How much of an RPM increase would that actually be?
 
Squiddy202

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Edwin Spangler said:
Watch a video on how valve float works, youll have a much better understanding. Its when the engine is running fast enough that its already on its next revolution before the valve spring has time to close the valve back up. It ultimately leads to the valve(s) being stuck open, never getting to close. Stock valve springs will float around 5k but "using that as a limiter" is asking for catastrophic damage.

As for adjusting the gov. Its ok if you dont plan to drive the kart at high RPM a lot. If you want frequent high RPM, just remove it. It IS plastic and it WILL grenade like youre worried about.

You dont need anything extra AT ALL to remove it. You can even rearrange the throttle linkage to use the existing cable.
Click to expand...
Watched a video, it seems as if it is quite noticeable when your valves being floating. How bad is it? I am going to make an Arduino tach using a hall effect and just mark where float occurs. It seems like it should be quite noticeable between backfires and stuff, is it? The videos online just show how to fix it not how to know when it occurs. Maybe they do, but I can't hear it. The other thing is with my kart will I even be able to reach dangerous rpms? It is heavy as heck. The weight/amount of power may well be limiting me. I have 7hp and my kart weighs probably around 300ish lbs.
 
Squiddy202

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Sparkwizard said:
Please fix your cable issue and try moving that spring before you remove anything.
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I'll look and the spring. I don't remember having those different holes but maybe. If it is that my pedal is hitting the steering rod I'm not majorly rearranging the kart until after the governor adjustment/removal. It may make it so less travel is necessary and then I don't need to cut into part of the kart. I don't know, I'll do some poking and prodding when I get home.
 
Sparkwizard

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The pictures you posted, your cable looked like it had a lot of slack in it. It should immediately move the throttle arm when you move the pedal.
 
Squiddy202

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Sparkwizard said:
The pictures you posted, your cable looked like it had a lot of slack in it. It should immediately move the throttle arm when you move the pedal.
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That’s the old one, but the new one is a pain. It is single strand so I can’t get it to work (well) with the screw and nut system that connects to the throttle pedal bar. Zip ties can position the sheath but mounting the cable to the bar absolutely sucks.
 
Squiddy202

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Either way, other than the throttle cable discussion, IF I were to remove my gov, how do I do so safely and run the kart safely? Also what are the in-the-moment symptoms of valve float?
 
Thepartsguy

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I’m guessing there is no flywheel or slide carb upgrade. A simple intake/carb would delete the governor and make hooking up a throttle cable very very easy!

Just a thought to look into. Even though it would make hooking the cable up safe and easy the governor delete isn’t the safest thing. Maybe if you don’t go crazy with the rpm’s but I’m not recommending anything.
IMG_6331.jpeg
 
Squiddy202

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Throttle lever fixed. The crappy cable was stopping it. With a little bit of loosening on the nut holding it on and some help…IMG_1866.jpeg
It moves freely. I might rig a bigger return spring. Also, not seeing any other holes on the governor.image.jpg
I’m gonna try the bike cable cuz it has to be cheap I would think.
 
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