Hart-Parr 16-30

Last Updated: July 2024

Overview

The Hart-Parr 16-30 is an early kerosene-powered, liquid-cooled tractor with an enclosed gear transmission and dry disc clutch. Its substantial 2-cylinder engine displaces 464.6 cubic inches with a 6.5-inch bore and 7-inch stroke, rated at 750 RPM. The transmission has 2 forward speeds (low 2 mph, high 3 mph) and 1 reverse gear. Weighing 8000 lbs with solid steel tires (28x5 front, 52x10 rear), it showcases rugged construction. Independent testing revealed a maximum belt horsepower of 37.03 HP and a rated 10-hour drawbar power of 15.29 HP. The governor system utilized a K-W magneto, Stromberg carburetor, and fly-ball governor. Lubrication was provided by a Madison-Kipp system, with an air cleaner of the United whirling vane type.

Key Specifications

Transmission: Enclosed gear drive, Dry disc clutch

Operating Weight: 8000

Fuel Type: Kerosene

Technical Specifications

Engine

Manufacturer: Hart-Parr
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Kerosene
Induction Type: -
Cylinders: 2
Displacement (ci): 464.6
Bore (in): 6.5
Stroke (in): 7
Rated RPM: 750
Power Output (hp): -

Transmission

Type: Enclosed gear drive, Dry disc clutch
Forward Gears: 2 (low 2.00 mph, high 3.00 mph)
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 132
Width (in): 74
Height (in): 67
Operating Weight (lb): 8000

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): -
Front Tire Diameter (in): 28
Front Tire Width (in): 5
Rear Tire Diameter (in): 52
Rear Tire Width (in): 10
Front/Rear Rim Diameter (in): -
Tire Type: Steel
Manufacture - End Year: -
Hitch Type: -
Hitch Category: Category 3
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: -
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 14 to 23, 1924

Maximum Power and Fuel Consumption

Maximum Belt Horsepower: 37.03 HP at 820 rpm
Fuel Consumption at Maximum Power: 1.92 gal/hr (7.27 l/hr) with a fuel efficiency of 2.290 lb/HP.hr
Temperature Operations: Water In 188°F, Water Out 198°F, Air Temperature 47°F

Drawbar Performance

Rated Load (10 Hours): 15.29 HP at 2.97 mph with a pull of 1270 lbs and 14.24% slip
Fuel Consumption at Rated Load: 1.85 gal/hr with a fuel efficiency of 3.31 lb/HP.hr
Maximum Drawbar Pull: 3729 lbs at 1.64 mph with 30.38 HP

Torque and Engine Performance

Speed at Rated Load: 750 rpm
Crankshaft Speed at Maximum Power: 820 rpm

Additional Information

Fuel Type: Kerosene (weighed 6.78 pounds per gallon)
Cooling System Used: Water (consumed 50 gallons during the test)
Weight of Tractor as Tested: 8000 lbs (including operator)

Nebraska Tractor Test Lab. (1924). Test 106: Hart-Parr 16-30. Nebraska Tractor Tests, 727. University of Nebraska - Lincoln. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/727