But this was in an irrigated crop growing region. There were two large cattle feed lots but very little livestock raising. I think the teacher taught just what he knew best.
Bruce
Sadly, I'd guess you are right. My school sponsored AG related events. One in particular was a "Tractor Rodeo". Various tasks that the operator had to perform and be judged. First year I won the "backing a 4 wheel wagon" portion I was 12 years old. Another event was a "Plowing Contest". I won that event one year with an 8N and a Dearborn 2x14 3pt plow. Had to hitch the plow to the "unadjusted" tractor and plow 3 rounds thru a short field and be judged on how effective the plow was adjusted and quality of furrows made.
Well I will probably be the cause of a new warning label. I was putting the bucket back on my L3560HSTC saturday. The locking pins were not lined up and I gave the bucket a shove to line them up. The bucket was off and on my foot before I realized what was happening. It's going to be a long 6-8 weeks.
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You seem to have a good understanding of only TWO of the THREE axis's of the center of gravity. X (left and right), Y (fore and aft)....but you are forgetting the most important. Z.....the COG height.
While raising a loader bucket, especially loaded, does have little effect on the COG position side to side or fore and aft....it raises it significantly. So any change of acceleration in any direction is alot more likely to tip the tractor. Not just side to side. Hit the brakes, go down a slight grade, and you tractor is likely to be on its nose and throwing you out of the seat in a split second.
Nice description of force interactions on tractor.Wow- if I keep operating this machinery I need to find a RN wife as well!!
Regarding the comment: 添ou are a pilot and do not understand CG ? I believe I do, and am curious that perhaps you do not? But, to be fair, if not, you have a lot of company in the tractor world.
Imagine a long pole under your tractor from side to side. Lift that pole and place the tractor so precisely on it that it balances perfectly and does not pitch forward nor pitch backward. That is the CG point. The side to side pole represents the lateral axis.
Imagine a long pole running under your tractor from back to front. Lift that pole and place the tractor so precisely on it so that it balances perfectly and does not tip left or right. That is the longitudinal axis.
Many confuse a raised bucket with a change to CG and an increased threat. Actually, what is more sinister is that it undermines the stability along the longitudinal axis of the tractor. Making the tractor more tippy side to side. There is only a slight change to the forward/aft CG point, since the bucket travel is mostly up and down, with only a slight amount of change forward and aft. The CG does change slightly, but that is not the problem. It is the longitudinal stability. Even tractor safety "experts" commonly get this wrong.
Imagine a single engine airplane. Now, build a mount so that engine is five feet above where it used to be. With it in that location, the front to rear CG could be balanced, but even a slight bank to the left or right during flight would quickly get exaggerated resulting in likely lost control. That is the same longitudinal instability as the raised bucket.
To create a more legitimate issue with CG using a bucket, you壇 need a telehandler. Fill the bucket, keep it the same height off the ground, but extend it forward ten feet. The rear wheels might lift of the ground, since the CG moved forward. But it would not be tippy side to side.
Anyway, the commenter helps make my point. With airplanes, I was provided quality data, including weights, charts, tables to work from, and an instructor to explain how it all fit together. With my tractor, I have far less information in a manual, with no personal instruction to fit it together. The misunderstanding about CG is an indicator of this lack of data or training. I do not advocate regulation. But I do see a very big difference between the training level for operating different, but dangerous equipment.
We dont need training, or mandatory anything. IF you dont know what you are doing, read the manual. If you still dont know, as questions. Online, dealer, other owner, etc. And if you are still unsure of yourself, you have no business owning a tractor....and then proclaiming that their should be some training mandates for everyone.
I'd not say "preaching" is the word, i'd use.
I learned tractor driving as a youngster and i survived my stupid Darwin moments by being very lucky, and to some extent by not panicking and quickly assess what i needed to do to get things back into normal perimeters. Another BIG factor to survival, was the large number of tractor drivers that talked about tractors among other ag related things. Also if you happened to be near by when I drove by with the FEL up high in the air and somebody saying, 'Hey Dumb A. drop that FEL down!" and explained why that was an issue.
Maybe some of these stores that sell urban tractors could also give short classes on tractor driving does and don'ts even a little maintenance points thrown in as well.