Tractor Rollover Demo Pictures and Videos

   / Tractor Rollover Demo Pictures and Videos #92  
Of course they are more prone to rollover. Didn't you ever have a tricycle as a kid. Make a sharp turn right turn and you go over the left side. Same thing happens on a tricycle tractor. Make a sharp turn to the uphill side and over you go.

Another example...
Draw straight lines between the four wheels on a modern tractor. You pretty much get a rectangle. Do that on a tricycle tractor. You get a triangle, like this... note the center of gravity. The COG moves, depending on slopes (both forward and backward and side-to-side), attachements hangin off the rear, FELs hanging over the front, etc... Get the COG outside of those lines and over you go. Its easier to move the COG outside those lines on a tricycle tractor.
<img src="http://www.tractorbynet.com/forums/files/safety/397507-tractor-rollover-demo-pictures-videos-tractorcgdiagram-jpg"/>

The front axle on a typical wide front end tractor pivots in the center, making it much like a tricycle tractor. At a certain point the travel stops and you get some stability from the front tires, but it is not like the four wheels are fixed.
 
   / Tractor Rollover Demo Pictures and Videos #95  
Hello MossRoad. Glad to see you're still pitching safety on the net. Been "out of town" for a few years! I appreciate your attitude and postings toward keeping people alive.
TTYL
 
   / Tractor Rollover Demo Pictures and Videos
  • Thread Starter
#96  
As Red Green would say, "We're all in this together."
 
   / Tractor Rollover Demo Pictures and Videos #97  
I flipped a JD 1010 tricycle after crossing a steep railroad crossing. It began to flip, so I jumped off (downhill). When I landed, I looked back to see it rolling over sideways towards me, so I had to jump again onto flat ground. It was a little over 25 feet high from the ground to the road. Had it had the ROPS, and not a seat belt, I would've been in bad trouble; I don't think I would've been able to jump. So if you use a ROPS, USE THE SEAT BELT! Thankfully, I only ended up with a herniated disc in the neck from the way I landed.
 
   / Tractor Rollover Demo Pictures and Videos #98  
Never drive across a slope with the nose pointed down hill , NEVER . As the front axle pivots in the centre it is like having a tractor with one front wheel in the middle . The weight is transfered to the low front corner and is taken away from the high side rear wheel . The front axle offers no resistance at all until the axle hits the stops by which time its all over . Thats why i mow steep embankments with the nose steering up hill , the rear axle being rigid stabilizes the tractor .

Thx Eagleview, that is a valid point forgotten by most. Front axle has CENTER pivot makes it a 3 wheel tractor for stability issues. In my shop I have front axle blocks made from Oak that wedge between tractor frame and front axle stops. That removes all front axle tilt when I have to jack up the rear end.
 
   / Tractor Rollover Demo Pictures and Videos #99  
Here is a link to the tractor rollover demo pictures and videos that we keep talking about in many forums here on TBN. There are five pages of information there, many pictures and videos. Please read them all, look at the pictures and watch the videos. I'll make this a sticky post for now so that it stays at the top of the Safety Forum for a while. ;)

Tractor Overturn, H.J. Sommer III
This link is no longer working. I poked around a bit, and this might be some of the same info.
eXperimental Kinematics Lab (XKL) appears to be the level to find most of the links.

Some videos are gone, but other mpg's downloaded onto my machine.

Tractor Overturn, H.J. Sommer III
 
   / Tractor Rollover Demo Pictures and Videos #100  
Here is a link to the tractor rollover demo pictures and videos that we keep talking about in many forums here on TBN. There are five pages of information there, many pictures and videos. Please read them all, look at the pictures and watch the videos. I'll make this a sticky post for now so that it stays at the top of the Safety Forum for a while. ;)

Tractor Overturn, H.J. Sommer III

The link doesn't work :anyone:
 
 
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