Anyone actually flipped a HST CUT pulling from the 3pth?

[brown40]

I know its mechanically possible, because I've levered the front of my HST (with loader) up before using a logging winch planted into the ground, attached to my 3 pt. I don't think my machine has the traction to flip itself, and may not have enough power for that matter. I know it could happen, because I've seen applied force at the axle level lever it up from the rear. I factor that experience into my work... heavy stuff with the truck.

 

[aczlan]

There was a CDC/NOISH study on 28 rear rollovers that happened within a 3 month span. They found that "improper hitching" caused 60% of the rear rollovers and that those with a ROPS and seatbelt on were far more likely to make it: Fatalities Associated with Improper Hitching to Farm Tractors -- New York, 1991-1995

Aaron Z

 

[aczlan]

No, the back wheels loose traction before the front wheels lift. With the loader removed this might not be the case. But you're right the box blade would prevent the tractor from going over backwards.

Unless something bends (toplink linkage?) and the tractor keeps going over, or you are on a sidehill and the tractor goes up, then over sideways.
Bent lower links from pushing backwards with a box blade:

Pic below
That's what my new ones will be doing from now. Well, I might push some cool whip or warm butter, but that's it
I felt like the leverage I get using the box blade was actually better. Also felt like the rear of the tractor is stronger. So much for that thinking.
This really stinks, too, because I always thought I had a good "feel" for geometry & force, good enough to know when I'm pushing something too hard. Dangit all.
Oh man I wish that's all that happened.
Will have to change to that policy from now on.
Prob true. I just didn't know it.
I've done this a lot, too, but it was sure nice to be able to back up to trees & uproot them without the need to get off the tractor to do the chaining, or have another person there to make it faster.
I now know. A day too late.
Lucky duck. I thought the cheap TSC box blade I was using would bend before the lower arm, or surely before the casting would break.
(The chain in the pic is just holding the arm from swinging around & getting caught on the wheel or the ground during for my sad 4-mile ride home last night)

Bent Toplink:

Well yesterday I was working on the driveway with the BB. I was tilting the BB some so I could crown the driveway. Had to extend my top link all the way to hook back up to the BB. When I lifted the BB, then end of the top link with the threads closest to the BB bent. Can I buy just the one threaded end a TSC and not the whole top link?

Aaron Z

 

[farm boy00]

Unless something bends (toplink linkage?) and the tractor keeps going over, or you are on a sidehill and the tractor goes up, then over sideways.
Bent lower links from pushing backwards with a box blade:

Bent Toplink:


Aaron Z

Had close to the same thing happen. Helping a neighbor moving a heavy duty buggy for his horse and brakes much of been locked up and had a back blade on with a older toplink.

Pulled a bunch and couldn't move it over a few inches so backed to it and tried to push with the back blade. Snapped the threaded part of the toplink right off and but a barely noticeable bend in the blade. Both were junk so I didn't care. Didn't see that buggy move the last few months I lived there. It was made of a Allis chalmers c rear end and a combine turning axle

 

[Sysop]

All honesty, I think the main reason it happens more on geared tractors is it is hard to press a clutch once it stands upright. The fact that rearing up will throw you backwards in the seat and remove your foot from an HST go-pedal is why it doesn't happen. It isn't any sort of natural reaction, just the natural dynamics of the situation. As a geared tractor rears up and throws you back in the seat it puts the clutch out of a natural position to be pressed on.

That being said, I have had the front of my HST CUT come off the ground while pulling. It never exceeded a foot, and kept pulling. I was watching hard for anything I might catch on the load and cause it to rotate rapidly.

 

[Steppenwolfe]

When I was a kid I worked for a farmer who had an old Oliver tricycle we used for pulling the manure spreader. If the load was too heavy that old tractor would start walking right over backwards without missing a beat. I learned real fast to hug that steering wheel and keep my foot on the clutch. The pucker factor was exponential when going up a hill...

 

[Gator6x4]

Unless something bends (toplink linkage?) and the tractor keeps going over, or you are on a sidehill and the tractor goes up, then over sideways.
Bent lower links from pushing backwards with a box blade:

Bent Toplink:


Aaron Z

Screw a large nut(s) on the threaded end, get out the big hammer, lay it on a anvil and straighten it.

 

[Luke'sScreenName]

When I was a kid I worked for a farmer who had an old Oliver tricycle we used for pulling the manure spreader. If the load was too heavy that old tractor would start walking right over backwards without missing a beat. I learned real fast to hug that steering wheel and keep my foot on the clutch. The pucker factor was exponential when going up a hill...

Oh man. NOT OSHA approved! Lol

 

[Luke'sScreenName]

All honesty, I think the main reason it happens more on geared tractors is it is hard to press a clutch once it stands upright. The fact that rearing up will throw you backwards in the seat and remove your foot from an HST go-pedal is why it doesn't happen. It isn't any sort of natural reaction, just the natural dynamics of the situation. As a geared tractor rears up and throws you back in the seat it puts the clutch out of a natural position to be pressed on.

That being said, I have had the front of my HST CUT come off the ground while pulling. It never exceeded a foot, and kept pulling. I was watching hard for anything I might catch on the load and cause it to rotate rapidly.

All true. Even better, when your foot comes off the HST pedal, not only does it not go forward it actually brakes! As your example shows, this allows for really precise control over torque.

 

[Oldpath05]

My L3400 front wheels will come up about 3ft, the pto winch blade and or log will rest on the ground and the rear wheels loose traction. Actually my tractor is in more danger of going over on it's side because of the narrow stance, in a tippy situation I keep my hand on the loader lever and just above ground 0.