Re: MF35 - sidehill safety

Posted by Nolan on June 18, 2002 at 08:45:30 from (209.48.190.220):

In Reply to: MF35 - sidehill safety posted by Chuck, WA on June 18, 2002 at 08:16:06:

HICAS did some tractor stability studies using an 800 series Ford, and an 8N. These tractors are dimensionally similar to yours, so the stability would be about the same.

Side tilt was a maximum of 45 degrees. At that angle, zero stability existed. Stabilty decreases in a non-linear fashion, so something like 30 degrees is quite stable, although it doesn't feet it when seated on the tractor.

Now this is for static stability, you're going to be moving. As such, the stability index is reduced. You as the operator can also make it worse.

Bouncing over terrain is the primary reason for reducing the stability when dynamic. From dropping the downhill wheel into a hole to bouncing the uphill wheel on a rock. These things can tip you. Abruptly turn uphill on that slope, and you can be tipped over. Catching an impliment in the ground can also turn you (nearly flipped an 8N that way when the bush hog caught on the downhill side).

Impliments all by themselves don't change stability much. But where you're carrying them sure can. A disk down in the ground helps a little, a disc carried up high hurts a lot. A loader bucket carried overhead just begs to tip a tractor over.

Stabilizers help by preventing the impliment from swinging and violently knocking the tractor over. Yes, a hog leaning on the downhill side should just stay there. But, catch a rut just right and you can bounce that hog uphill, when it comes back downhill, the violence can be rather remarkable. It probably won't tip you, but it's hard on the tractor, the equipment, and your nerves.

By and large, your own feelings will tell you a lot. If your heart is pounding and your bottom is clenched, the hill is too steep. It doesn't matter if someone else can do it, or says they can. The fact is, you're uncomfortable, and as such should back off.

Follow Ups:

• Re: Re: MF35 - sidehill safety Chuck, WA 10:19:34 06/18/02 (0)

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