Pull from the front or the rear?

[CalG]

Like this:

View attachment 571763

OK, I see now, if the drawbar is long enough, the load attachment point low enough, and the chain short enough, you can get the line of the chain above the axle until the tractor tips up enough. Then, if it tips past the position in the lower sketch the chain begins to pull the front end down.

I can see that drivers in tractor pulls might rig this way to increase traction. I suppose that's why drawbars on real tractors aren't that long.

A longer draw bar get's lower with less rotation of the tractor. If long enough to strike the ground, it acts as a wheelie bar.

Having the load weight the tires is GOOD! for traction. The important thing is to not allow that goodness to get too far.

A load hitched to a 3pt spreader bar does not have the ability to change the center of pulling force. The lower lift arms on on pivots.
Deadly! Unless the lift is designed for position control with down force.

I'm liking the Hurlimann more and more. Position control is the normal mode. And can even be combined with draft control.
Float is the difficult setting. I've got to run chains for lift links on the blower for the softest float condition. ;-)

 

[DieselBound]

If tractors pulled better from the front then you'd see all the plowing done with plows up front (and tractors going in reverse!)

Draw bar!

But, always, use caution when dealing with large forces.

 

[JohnBuffaloMN]

Oh CRAP, my tractor is defective, "chassis" draw bar is only 8 inches off ground, according to page 2 of document it should be 15 (+/-) inches and my drawbar material is a lot smaller in dimension than specified in chart....Guess none of what document says will apply for me....

Dale

Can't be - it is stated in the document:

"Figure 5.1.d. Tractor drawbars are
designed at the correct height from
the ground to keep the pull forces
below the center of gravity."

Have you checked your tire pressure?

 

[WranglerX]

Can't be - it is stated in the document:

"Figure 5.1.d. Tractor drawbars are
designed at the correct height from
the ground to keep the pull forces
below the center of gravity."

Have you checked your tire pressure?

It's a MF GC 1715 (SCUT) everything is low to ground....And yes it advertises as a CAT 1 hitch which implements seem to fit.... Picture soon ... Done ..



Guess your next comment will be "its not a real tractor"...


Dale

 

[JohnBuffaloMN]

It's a MF GC 1715 (SCUT) everything is low to ground....And yes it advertises as a CAT 1 hitch which implements seem to fit.... Picture soon ... Done ..

View attachment 571836

Guess your next comment will be "its not a real tractor"...


Dale

It was a joke.

 

[LouNY]

This thread has some factual info, a bunch of hysteria and some nonsense.
Yes, you should try to pull from the fixed belly mounted drawbar most of the time,
that is your most stable pulling point. Can you use a 3 point drawbar? Certainly
they have been used many times, can they be more hazardous? Most certainly.
Any tractor can and will rear up in the air under certain conditions,
1) good traction
2) a hard pulling load
If the pulled load exceeds your tractors pulling capacity but you have traction and power your tractor will rotate the front up,
an unmoveable load with enough traction and enough gearing will lift any tractors front end. Usually traction is lost and the tractor will spin out and stop lifting the front end.
One problem with pulling from 3points is that there is no upward travel stops, under hard pulls when the front starts to lift which it will because you can pull harder with the higher hitch once rotation starts the 3 point hitch will abruptly jump allowing rapid rotation and rear over turning.

When any heavy pulling is done using the lift arms there should be a travel limiter used to prevent the lift arms from uncontrollable lifting.

A chain down to the fixed drawbar or solid limiters from the top link attaching pin point on the tractor.

 

[WranglerX]

It was a joke.

Guess my comprehension interpreter was mal adjusted....

Dale

 

[Walkin Horse]

All this talk about pulling and using chain. Isn't that dangerous no matter where you pull from? There was a guy around here pulling on a stump with a chain. It broke and came through the back window of his truck and killed him. I use a chain maybe to lift with but to pull I use a nylon choker or a 9/16 cable with 3 clamps on each end.

 

[bcp]

They are all dangerous. If it stretches before it breaks, it will snap back. The material doesn't matter. Larger and stronger is less likely to break.

Bruce

 

[MossRoad]

It was a joke.