Twin City 20-35

Last Updated: July 2024

Overview

The Twin City 20-35 is a 4x2 2WD tractor, which suggests it was designed for general farm work with a predisposition for flat terrains rather than hilly or uneven ground. It was equipped with a 2-speed gear transmission featuring 2 forward gears and 1 reverse gear. The tractor's engine is a liquid-cooled, 4-cylinder model with a vertical cylinder orientation and a valve-in-head configuration, powered by kerosene. With an engine displacement of 641.5 cubic inches, a bore and stroke measuring 5.50x6.75 inches, and operating at a rated RPM of 900, this tractor was built to deliver power despite its relatively lower engine speed. It also had a significant cooling capacity with a 72-quart system. This model was reported to have large steel tires with dimensions of 36x8.50 inches in the front and 60x20 inches in the rear, and an operating weight of 8,100 pounds. The length of the Tractor is 152 inches and the height is 73 inches, providing a stable and robust frame for various tasks.

Key Specifications

Transmission: Gear

Drive Type: 2WD

Operating Weight: 8,100

Fuel Type: Kerosene

Technical Specifications

Engine

Manufacturer: -
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: Vertical
Valve Configuration: Valve-in-head
Fuel Type: Kerosene
Induction Type: Naturally Aspirated
Cylinders: 4
Displacement (ci): 641.5
Bore (in): 5.5
Stroke (in): 6.75
Rated RPM: 900
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 2
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): 152
Width (in): -
Height (in): 73
Operating Weight (lb): 8,100

Power Take-Off (PTO)

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

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD
Steering Type: -
Coolant Capacity (qts): 72
Front Tire Diameter (in): 36
Front Tire Width (in): 8.5
Rear Tire Diameter (in): 60
Rear Tire Width (in): 20
Front/Rear Rim Diameter (in): -
Tire Type: Steel
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: -
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 5 to October 19, 1920

Maximum Power and Fuel Consumption

Maximum Brake Horsepower: 34.54 HP at 842 rpm
Fuel Consumption at Maximum Load: 6.0 gal/hr with a fuel efficiency of 0.524 lb/hp.hr

Drawbar Performance

Drawbar Horsepower (1st Gear): 31.5 HP
Fuel Consumption at Rated Speed (Drawbar): 4.59 gal/hr with a drawbar pull of 4575 lbs

Torque and Engine Performance

Engine Speed at Maximum Torque: 842 rpm
Engine Rated Speed: 900 rpm

Hydraulic Performance

No data on hydraulic performance available in the test results.

Overall Efficiency

Average Brake Thermal Efficiency: Not specified in the provided details.

NTTL. (1920). Nebraska OECD Tractor Test 067 for Twin City 20-35. Lincoln, NE: Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/686