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Allis Chalmers 20-35

Allis Chalmers 20-35 tractor
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The Allis Chalmers 20-35 is a standard-tread tractor built from 1922 to 1930 in West Allis, Wisconsin, USA. It features a 7.6L 4-cylinder gasoline engine producing an estimated 38.9 hp. The tractor has a 2-speed unsynchronized gear transmission with hand-operated expanding shoe clutch. It offers 20 hp drawbar power claimed and 33.20 hp tested, with belt power up to 44.29 hp tested. The tractor weighs 6640 lbs and rides on 36x6 front and 50x12 rear steel tires. It has manual steering and an open operator station. The 20-35 succeeded the 18-30 model and was later replaced by the 25-40.
Allis Chalmers 20-35tractor specsfarm tractor7.6L engine20 hp drawbar35 hp belt1922 tractorstandard-tread tractor
Power38 hp[B]
Founded1922 - 1930
Model20-35

Technical Specifications

Detailed specifications and technical data for Allis Chalmers 20-35

Power

Belt (tested):44.29 hp (33.0 kW)
Belt (claimed):35 hp (26.1 kW)
Drawbar (tested):33.20 hp (24.8 kW)
Drawbar (claimed):20 hp (14.9 kW)

Engine

Type:liquid-cooled vertical valve-in-head
Aux. fuel:7.75 gal (29.3 L)
Fuel tank:25 gal (94.6 L)
Rated RPM:930
Air cleaner:oil bath
Bore/Stroke:4.75x6.50 inches (121 x 165 mm)
Fuel system:Kingston L 1.5" carburetor
Displacement:460.7 ci (7.6 L)
Engine Detail:Allis Chalmers 7.6L 4-cyl gasoline
Coolant capacity:40 qts (37.9 L)

Mechanical

Drive:Two-wheel drive
Steering:Manual steering
Operator station:Open operator station

Production

Type:Standard-tread tractor
Notes:When the Allis-Chalmers E 18-30 was re-tested in 1921 at 930 RPM, it produced a rated 38 belt horsepower. The tractor was re-named the 20-35.
Built in:West Allis, Wisconsin, USA
Manufacturer:Allis Chalmers
Production years:1922 - 1930

Belt Pulley

RPM:930
Width:8.5 inches (21 cm)
Diameter:13 inches (33 cm)

Transmission

Type:unsynchronized gear
Gears:2 forward and 1 reverse
Clutch:hand-operated expanding shoe

Serial Numbers

1923:6161
1924:6397
1925:6755
1926:7369
1927:8070
1928:9870
1929:16762
1930:23252
Final:24185
Location:Serial number on a plate in front of the steering wheel until 1927. After, the serial number is front of shifter on transmission case.

Dimensions & Tires

Width:66 inches (167 cm)
Height:68 inches (172 cm)
Length:135 inches (342 cm)
Weight:6640 lbs (3011 kg)
Rear tire:50x12 steel
Front tire:36x6 steel

Related Models

Allis Chalmers 25-40

Model:25-40

Allis Chalmers 18-30

Model:18-30