Pull from the front or the rear?

[WranglerX]

except for the reliance on the roll over bar and seat belt,

I seems you know what you are doing.

IIRC this thread started with the question about pulling from the front.

Maybe the rest of us know what we are doing to, but you are too stubborn in your belief you are correct and that the rest of the world is wrong.... Pretty much invalidate you statements and you still insist on the insults to our intelligence.... I came here to learn not to be called stupid....

Dale

 

[the old grind]

Folks call facial tissues 'Kleenex', and table tennis 'Ping Pong' all the time. Both are trade names that have become descriptive terms by common usage.

Stands to reason that someone would also misuse those ventilation holes in a 'spreader bar' and mislabel it to boot.

I wonder what John Weldon would say about all this ... say scold those of us who haven't flipped a tractor for 'hanging out' on the wrong thread?

CalG, I have a suggestion for the avatar you don't use. Haven't seen it elsewhere on TBN and I presume it's not copyrighted.

 

[aczlan]

except for the reliance on the roll over bar and seat belt,
I seems you know what you are doing.
IIRC this thread started with the question about pulling from the front.

I rely on pucker factor, experience and (if needed) a fast left foot on the clutch to keep the tractor from trying to roll over backwards. I trust in the rollbar and seat belt to make up the difference if my foot is not fast enough.

Aaron Z

 

[WranglerX]

I'm so conflicted.....



And yes I know I have used linch pins instead of driving in roll pins to lock adapters on, but I am not sure adapter are going to stay with this "xxxxxxx bar"

Dale

 

[Snaker]

The statement about if you have power and traction and the pulled load exceeds your tractors pulling capacity is just plain wrong

If you are pulling from a drawbar below the rear axle the front will be forced down not up

Draw the force vectors

We did hundreds of times in engineering school

Up violates the laws of physics

Andy

Oh Andy, You should never have brought education into this.
You have to look at it as a conflict between a wheel axle rotating within a tractor and a tractor rotating around a wheel axle.
The pulling load becomes a anchor.
Pulled from above the axle, the anchor assist's the rotation of the tractor around the axle and from below the axle, the anchor resist's the rotation of the tractor around the axle.
But neither way will the anchor stop the tractor rotation.

 

[Snaker]

The 3-point drawbar was part of Ferguson's patented hitch system for transferring trailer weight to the tractor for better traction. I didn't notice any mention of it in the hitch patent, which was mostly about the draft sensing.

View attachment 571732

When the 3 point hitch first became available, almost all older implements were pulled, not carried. The implements usually had a clevis hitch. The 3 point drawbar (with stay straps to keep it at a fixed level) was convenient for these implements, and also allowed greater vertical angle in dips and ridges than the fixed or swinging drawbar and clevis.

View attachment 571733

Bruce

BCP you added the best info of all and got ignored. I like it.
I grew up with several small Fords. We had one 8n with the stubby drawbar that had nothing to do with the 3pt.
Others used a extension drawbar that laid on top of the 3pt crossbar with a clevis. I had though that the extension was just a scrounged up part but I saw very similar pieces at times so maybe it was a Ford part.
As mentioned, that setup made use of the stay straps to keep the 3pt from floating.

As far as the crossbars having several holes I think that goes back to the earlier tractors. Most had cross drawbars with several holes. There was even some equipment that mounted to the tractor using those cross bar holes.
We used a Minnesota brand sickle mower that had a similar crossbar. That crossbar was bolted to the tractor crossbar, a bit of a hassle in all.
That was why the mower was left on that 8n all hay season.

A swinging drawbar could also be used to offset the tractor tracking to the equipment tracking (plowing with the tractor tire in the furrow).

Farmall in particular used a floating drawbar on the crossbar using rollers. I remember looking at those Farmalls not understanding the point of the rollers (my family didn't know either). I was at an auction or something and brought it up. A oldtimer told me that the floating drawbar was used to help the tractor turn in the field. The tractor would start turning and the drawbar would slide to the inside of the turn, a big help especially with disc's that weren't raised for turns.

 

[the old grind]

Vectors also change as the rotation begins, and if the 'anchor' (load) is hitched above the axle centerline the wheels will most certainly move forward as part of that change. Point being that we shouldn't assume that pull (tire contact) and load are immovable at all times.

Problem comes if when hitching below the axle we assume that wheels could slip but then not still exert that rotational force while skidding slightly backward. If wheels couldn't move with either hookup the vector guys would be validated.

There are things that make no sense at all to most of us. If you've ever pounded a workpiece already tightened in a vice down onto mill parallels or against tightened lathe jaws to square it up you know what 'bounceback' means, and understand why the dead-blow hammer is often essential to setting up precision work.

btw, I've been to college too, and there is a difference between having all one's hands-on 'lab' assignments suitably graded '100' and watching them lose a finger doing a sloppy setup on a machine that hasn't even been to kindergarten or understands vectors when it 'crashes'. A degree is a piece of paper denoting educational vs 'field' experience.

 

[California]

Claiming that pulling from below the axle can't pull the tractor over backward ignores the real-world wheel hop that will occur when nothing else gives way. 'Climbing the ring gear' as the old timers described the vector forces in terms they understood, is quite possible if the drive tires are bouncing.

 

[zmountaineer]

When we were clearing the land for my house I had cut down a group of 3 trees. These 3 trees were down a 50 degree slope. I had I use both of my hands to assist climbing up this slope to get to the tractor on dead flat level ground. I had hooked all 3 trees together for the pull. These were not real big trees, maybe 8 inches in diameter. So I attached them to the immovable drawbar. My father in law in his 60 hp tractor with no FEL but had weights on the front (used this tractor for bailing) started to pull. In what seemed like a split second the front end shot up. He quickly pushed in the clutch and it dropped back down. He absolutely would have went over if he didn’t push in the clutch.

 

[RickB]

Oh Andy, You should never have brought education into this.
You have to look at it as a conflict between a wheel axle rotating within a tractor and a tractor rotating around a wheel axle.
The pulling load becomes a anchor.
Pulled from above the axle, the anchor assist's the rotation of the tractor around the axle and from below the axle, the anchor resist's the rotation of the tractor around the axle.
But neither way will the anchor stop the tractor rotation.

Excellent, concise comment. I’ve been struggling to articulate that exact thought without any success.