Governor for IH M

Why do you want to surge? It hurts your pull and hard on motor. If you ever lift weights do you lift slow and steady or do you jerk the weights.
 
I disagree. My grandpa's pulling tractor that he shaved the weights on that was used also for farming never needed anything done to it for the past 40 years. Back in the day when people did all the motor work themselves and didn't spend 10,000 in a motor, it was hard to beat and still is.
 

If you think about how a governor works you can make small improvements to the setup with a few changes, for instance when you pull the throttle and the engine is at lower RPMs, the pull of the spring overcomes the forces of the spinning weights and the carb is opened up, as the engine speeds up the weights spin faster and their force begins to equalize the force of the spring and the carb slowly closes to a point where the tension from the spring is equal to the force from the spinning weights.

This also works the other way, when the engine is running a certain RPM and a load is encountered, the rpms fall, the spins weights have less force than the current spring weight and the carb butterfly opens until the rpms come back up and the two forces equalized again.

The tricky part is controlling the droop, that is how much the rpms fall before the governor reacts , if this is too small then you have constant surging, if this droop is too large, then the engine looses too many rpms and unable to recover.

Look at some of the aftermarket governor setups and the differences in the weights as compared to the factory governor weights. it isn't just the amount of weight that is important, but the placement. Granted you can make some small changes that will lead to improvements, but I definitely would seek out to make it surge.
 

Edit for the upper post.
I definitely WOULD NOT seek out to make it surge.

This is important when you are trying to maintain traction in a speed limited pull especially, as a jerky governor can cost you a grip on the track, where it'd be better for the engine to lug down a little and maintain traction, instead of surging and spinning out.
 
I just done one. Used a postage scale. Took 25 percent off. That plus a little extra stroke on the throttle got us 3000 plus. It is touchy. Jacks about twice when you pull throttle down. But but think it will launch ok. But need to let clutch out and hang on! Its a small block 460.
 

Yes, by reducing the weight of the weights, it makes the point where they equalize at a higher rpm, the same as if you add a heavier spring.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top