What's a good level of draw bar pull force for a tractor like a Super GT or SCUT? I tested mine today with a force gauge and it was able to pull with about 2,000 pounds of force using a slow even pull before the hydro relief kicked in. Also tested the bucket lift using my welded clevis mounts, it was able to pull almost 1,700 pounds before the rear tires came off the ground. That's with a 300'ish pound box blade and around 200 pounds of fluid in the rear tires for ballast. Tractor is a JD x595. And yes before anyone asks the relief valve is shimmed.
I'd love to see the video of the testing setup and procedure.
Maximum drawbar pull occurs just before wheelspin and requires mucho traction. The X595 weighs 1080 lb. With the 500 lb of ballast, and the countering weight of a loader on the other end, that puts about 1300 lb on the rear tires. The math
says that you can't exert 2000 lb of horizontal pulling force with only 1300 lb of traction, but strange things happen in the world of GTs. (I've done lots of "it can't be done" things with mine.)
The other thing is that Tuff Tork rates the K92 at 650 lb-ft of maximum rated axle torque. With 26x12-12 tires, that translates to about 650 lb of line pull. But, as with most manufacturers, the printed specs are usually well under the reality that can be achieved.
A lift of 1700 lb is indeed impressive for a GT loader, and the math agrees that that is about the point where the rear wheels will lift off of the ground placing about 3600 lb on the front tires. Keeping the rear wheels on the ground with only 500 lb of rear end ballast does make it even more impressive. The lift cylinders on my GT FEL are 2x18 and the system maxes out at 1500 psi. With a (scaled) 1250 lb load strapped over the back
of the 210 lb bucket and 600 lb of rear end ballast, my GT could still move, but if I got off, the rear wheels would have lifted off the ground. In addition, the lift cylinders on my SCUT FEL are 1.5x13 with a relief pressure of 2000 psi. It won't lift off the ground a weight that my GT can lift to full height.
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MF GC2310, Husqvarna YTH20B42T
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MF1655 w/ FEL, MF1655, MF12H, MF8H, MF7H
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