The two rear tires with Rim Guard (140 lb per tire). The front tires are on a pivoting axle. When the tractor tips past
the critical roll-over tilt angle, both front tires are still planted firmly on the ground. Well before the high side front tire can leave the ground, there is zero chance of recovery. From unfortunate experience, wear your seat belt!
The center of mass of the liquid ballast is below the axle center line and will effectively lower the tractor's CofG more than any other ballast weight. Wheel weights are the next best alternative with the center of mass at axle center line. Ballast center of mass on the 3PH is usually above the axle centerline.
JD recommends 800 lb of ballast for loader work. That's about the weight of the back hoe. Empirical testing
(Post #10) has shown that approximately 60% of payload is required for ballast. Since the loader is more or less balanced on the front axle, and the maximum payload is about 1100 lb, 660 lb of rear end ballast would be the minimum to counter payload and also have about the same traction as the tractor alone.
The loader will not lift an 1100 lb payload in the bucket more than a foot off the ground. As the bucket rises, payload capacity falls off and less counter weight (ballast) is required.
With 280 lb of liquid ballast in the tires, a minimum
of 380-400 lb is required for combined wheel weights and the 3PH ballast to sufficiently ballast the tractor for all loader payload capabilities.
Note that a 1 Series SCUT has a bit longer wheelbase than an X7xx GT resulting in slightly improved leverage for ballasting to counter payload. The extra 200 lb+ of tractor base weight doesn't hurt either.
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Sometimes you get on a roll, sometimes the roll gets on you.
MF GC2310, Husqvarna YTH20B42T
Down for Repairs
MF1655 w/ FEL, MF1655, MF12H, MF8H, MF7H
Spending too much time on MTF to work on my toys.