3D Lateral Stability & Rollover Analysis for Compact Tractors
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- čas přidán 27. 03. 2023
- In this video, we develop a 3D model for lateral stability and rollover, and work through the math and physics to come up with some useful results. This analysis includes the effect of longitudinal loading and a pivoting front axle on lateral stability. To download the spreadsheet with these calculations, see:
drive.google.com/file/d/1HeXE... - Komedie
Best video on the subject and required viewing for all tractor operators!!!
This should be mandatory viewing for any tractor owner. It would also help if tractor manufacturers provided CG info for their models excluding addiotnal loads. Excellent!
Man you knocked it out of the park!!! I grew up on a farm in WI, the hilly Kettle Moraine in Sheboygan County. I have a seat of the pants feel for everything you talked about. It is great seeing the math and your spread sheets.
I now live in La Crosse County among the bluffs and coulees. So again I have lots of slopes to deal with on my JD3320, about the size of your tractor.
This! Should be required analysis for every new tractor owner. I'm a new owner of a Deere 1025R with loader, and the amount of ballast required is higher than I would have guessed. Your analysis - and the spreadsheet! - makes it possible to understand just how loader height, payload, and ballast / position has an effect on safety. Thanks for the work, and especially, thanks for making the spreadsheet available. 🙂
One other question... was the drawing / CAD tool you used helping iron out the physic calculations, or just a drawing tool?
@@stevehenty6379 Just for graphics.
When Farmers cultivated row crops the tractors had either a single front tire or two front tires close together to get between the rows. Farmers would often debate how much the wide fronts of today would help avoid rollovers. It would be fun to put those use cases in your spreadsheet.
Outstanding work! Thanks so much. Very helpful info to understand the system we are dealing with.
This is lovely! Because of my work I had the option of surveying my land to identify all the dangerous slopes and then model the land in 3D. While your spread sheet is not intended for operational use it will be fun to try it against the survey model. Thank you for providing it. I have always wondered why tractors do not come the same safety software as elevated platforms (that stop the machine as it nears the upset point) or why a smart phone app cannot be linked to the tractor to monitor for rollover since they have Accelerometers and Gyroscopes.
Thoroughly agree. Automatic limiters would be the ultimate.
It's not that easy. Stopping a tractor that moves with load on the front end loader, when it enters the slope it won't survive only makes everything worse. The breaking would increase the force on the front axle and decrease on the rear axle (as the acceleration comes into play). It would only make the rollover even more unavoidable. As far as I learned from my personal experience - whenever the tractor loses contact with the ground on the back, the only thing you can do is just push that joystick front as (if) your life depends on it. That way the load is lowered to the ground and even the whole triangle of support becomes a trapeze (as the bucket/forks/whatever will be supported on it's both ends). It is the point - you can save yourself (I have done it several times, as I use a compact tractor to transport hay bales, and it becomes a difficult job when the land is uneven), but you need to take it into account in advance, go VERY slowly whenever you enter any uneven terrain, and on top on that - be aware of your surroundings as dropping the loader to the ground can injure someone if he or she is too close. Those are the things you need to do BEFORE entering a dangerous spot, and it cannot be replaced by any automatic system, as when the tractor starts moving sideways it is far too late to take those precautions. Dropping the loader to the ground automatically in case of moving faster or in proximity of other people is very dangerous in itself.