Preventing tractor back flip

[Baby Grand]

The reaction to the drawbar load is trying rotate the tractor about the rear axle in the direction of pushing down on the front axle.
The torque from the engine, acting thru the rear axle is trying to rotare the tractor about the rear axle in the opposite direction.
Traction & amount of each force will determine if the tractor stays on the ground and digs the rears in, flips backwards, or stalls.

 

[Short Game]

Ya gotta consider ALL the forces at play.

It makes my head hurt. (But I guess that's what the ROPS is for.)

Traction & amount of each force will determine if the tractor stays on the ground and digs the rears in, flips backwards, or stalls.

Do we get to choose?

 

[bcp]

See the simplified diagram below.

If "A" moves forward, "E" will rise.

Bruce

 

[Short Game]

See the simplified diagram below.

If "A" moves forward, "E" will rise.

Bruce

Not if "F," the rock, moves too. (I hope that's a rock.)

 

[foreman Etexas]

Not if "F," the rock, moves too. (I hope that's a rock.)

Wouldnt "F" need to be moving the same speed as "A" to keep "E"down



Something gotta give!!!!!

But Im gonna say Wheelie unless you loss traction(to original post)........

 

[Short Game]

I guess slow rocks could be an issue too.

 

[Degolyerent]

Maybe y'all should ask all the people who have died doing the same thing!

 

[Farmwithjunk]

Maybe y'all should ask all the people who have died doing the same thing!

DO they have internet access in the hereafter?

 

[bcp]

Not if "F," the rock, moves too. (I hope that's a rock.)

That's the "immovable object" I put there.

Bruce

 

[hosspuller]

I thought I could find a video example of an actual flip, but can't so far. However, check this tractor pull video out; Note that the tractor is pulling a wheelie the whole time. Certainly they pull from below the center of rotation, yet still get the front wheels off the ground: ‪NTPA Tractor Pull - Jefferson City, MO‬‏ - YouTube

Well.. you proved me wrong... I notice the front only raises at the start of the pull but finally falls to earth at the end of the run. Are the connections to the sled slack? I wonder if the tractors are using a run to get the sled moving and then keep it moving?