Nebraska Tractor Test Laboratory - Test Date: May 16 to May 19, 1955
Maximum Power and Fuel Consumption
- Maximum Belt Horsepower: 33.62 HP at 2001 rpm
- Fuel Consumption at Maximum Belt Power: 3.09 Gal/hr with a fuel efficiency of 10.88 Hp.hr/gal (0.556 lb/hp.hr)
- Operating Maximum Load Belt Horsepower: 32.83 HP at 2000 rpm with fuel consumption of 2.885 Gal/hr
Drawbar Performance
- Rated Load Drawbar Horsepower (10 hours in 4th gear): 22.36 HP at 5.19 mph (1615 lb pull, 4.10% slip)
- Maximum Load Drawbar Horsepower: 27.99 HP at 5.15 mph (2037 lb pull, 4.88% slip in 4th gear)
- Fuel Consumption at Rated Load: 2.275 Gal/hr with a fuel efficiency of 9.83 Hp.hr/gal (0.616 lb/hp.hr)
Torque and Engine Performance
- Maximum Torque: 242.6 lb-ft at 1119 rpm
- Torque Rise: Observed torque increases across various engine speeds, peaking at 242.6 lb-ft.
Overall Efficiency
- Fuel Efficiency at Standard PTO Speed: 10.95 Hp.hr/gal (0.553 lb/hp.hr) at 2000 rpm under rated load conditions
- Fuel Consumption at Varying Loads: Fuel usage averages around 2.781 Gal/hr with a fuel efficiency of 10.93 Hp.hr/gal (0.554 lb/hp.hr)
NTTL.(1955).Nebraska Tractor Test No. 541 for Oliver Super 66. Lincoln, NE:Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/525