How quickly can it happen?

[AnotherBueller]

Or the engine stalled.

Watch the video again, turn up the volume, and listen.

The tractor engine dies well before the flip is complete.

I couldn't her the audio, to me it looked like the tire stopped rotating and the tractor started rotating, in the opposite direction mind you, at about the same speed that the tire was turning.

 

[Flogger]

That there’s one of them DA’s……..

 

[Flogger]

I watched an AI narrated video on Youtube a few months ago, something like "The 10 most dangerous things about antique tractors." One of those dangerous things was how much more likely a narrow front tractor is to roll over than a wide front. They showed several filmed examples of tractors rolling over, most of which could have been easily avoided by a competent operator.

Thing is, the most spectacular rollover scene they showed, which they showed over and over again through the video, was with a wide-front tractor...

Wide front axle doesn’t change the 3 point stability triangle. By the time the axle pivot hits a stop you are in serious trouble.

 

[chim]

I took some engineering and computer programming courses back in the 1970's and 80's. I worked for years for different companies as kind of an electrical supplies engineer salesman and automation project salesman. I also was a new product development project manager for a medical respiratory device manufacturer. I learned a lot over the years.

Ever hear of Timeter, Breathing Services or Respitech?

 

[RayIN]

I took some engineering and computer programming courses back in the 1970's and 80's. I worked for years for different companies as kind of an electrical supplies engineer salesman and automation project salesman. I also was a new product development project manager for a medical respiratory device manufacturer. I learned a lot over the years.

One of my professors told my class after finals. "now you have a foundation up on which are ready to begin learning".

 

[SteveD55]

Ever hear of Timeter, Breathing Services or Respitech?

No, the company I worked for was a small (100 employees) local manufacturer. I was there for about 5 years, then they were bought by an investment group. These investment groups buy companies, cut expenses like R&D and lay people off to make the company look more profitable. I knew what to expect, after 5 years sell to a larger manufacturer and move all assets to another state. I was right.

 

[Shawn T. W.]

Wide front axle doesn’t change the 3 point stability triangle. By the time the axle pivot hits a stop you are in serious trouble.

That's not been my experience ... As you can see from this picture taken this morning after more than 735 hours on this machine (I bought it new) that the front axle has "touched" the frame enough times to wear the paint off!

Through my own experimenting on another forum where there was debate about using 1.3" front spacers to add stability ... I did a bit of testing on my "Little Baby Fergie" a 2021 Massey Ferguson GC 1725 MB - SCUT ...

I found that a 3" rise on the front axle didn't cause the front axle to touch the frame, and supply extra stability ...

However 4.5" DID!

With further debate ... That I didn't do the experiment "right" ... I then did it based off the rear axle a few weeks later ... I drove it up onto a 8" high ramp, which picked the front tire roughly 2" off the ground! I have picked one front tire up off the ground on uneven ground plenty of times, and never rolled over!

And firmly planted the frame on the other side against the axle stop!

I then repeated the experiment with the lower 4.5" ramp on the back ... Same result as the 8", except it didn't lift the front tire ...

So my conclusion is/was that front spacers DO add stability on uneven ground, on my tractor a sudden rise or fall of 4"-4.5" on any tire will cause the front axle to bottom out against the frame, and begin to add stability, only common sense will tell us that the wider that is, the more stability that will add ... That's mostly why I run them, besides it provides extra room for running chains on the front.

I will also state that spacers on the front will NOT add any stability on relatively smooth, but not level ground ... Such as this ...

The only thing that I can think of that might have prevented the wheelie in the OP's video would be adequate FRONT ballast, hitching lower, if possible would too ...

On my SCUT, the "drawbar" really is just a place to put a pin for a garden type cart ... Is about 2" lower than the 3pt lower arms ...

On my CUT, a Kubota L 5030, the draw bar is only about an inch or so lower that the lower 3pt arms ...

 

[WinterDeere]

Wide front axle doesn’t change the 3 point stability triangle. By the time the axle pivot hits a stop you are in serious trouble.

Not correct. A wide front end is much more stable, but not for the reason most suspect.

Of course the front of the tractor still pivots on a trunnion, but you have to remember that trunnion is more than a foot higher off the ground and closer to the vertical center of mass, which vastly improves stability.

If you don't believe me, stick a bowling ball on top of a pool cue, and try to balance that upright. Now replace the pool cue with your hand directly under the bowling ball, at the same height. Which is more stable?

 

[RayIN]

Wide front axle doesn’t change the 3 point stability triangle. By the time the axle pivot hits a stop you are in serious trouble.

Not correct for everyj tractor IMO. I've had my TO 20, TO 30, and MF 135 in many places where one front tire was off the ground while the tractor was on level ground; like crossing a diagonal ditch. There are built-in stops to limit axle pivot degrees.

 

[WinterDeere]

Not correct for everyj tractor IMO. I've had my TO 20, TO 30, and MF 135 in many places where one front tire was off the ground while the tractor was on level ground; like crossing a diagonal ditch. There are built-in stops to limit axle pivot degrees.

Good point. But even without the stops, wide front end is more stable due to simple physics. As long as pivot point (trunnion) is higher off ground than tire patch of a tricycle, it will be more stable.