Compare/Allis Chalmers 20-35 vs Fox River Tractor Company 20-40

Allis Chalmers 20-35 vs Fox River Tractor Company 20-40

Verdict: Allis Chalmers 20-35 vs Fox River Tractor Company 20-40

The Allis Chalmers 20-35 and the Fox River Tractor Company 20-40 are both tractors — here is how they stack up on the figures that matter. Both are rated at the same 20 hp. Allis Chalmers 20-35 is the lighter machine (3,011 kg vs 3,039 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 20-35 holds more fuel (94.6 L vs 75.7 L) for longer stints between fills. Allis Chalmers 20-35 is the newer design (1922 vs 1920). Use the full side-by-side spec tables below to weigh the details against your own operation, and confirm with a dealer demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Fox River Tractor Company

Fit score

Best match

Clear

Rated power

20 hp

Confidence

40%

Guide price

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Overview

Manufacturer

Allis ChalmersReference

Fox River Tractor CompanyReference

Gasoline 2-speed 2WDJune 19 - 26, 1928Link: Nebraska Tractor Test 151 fileReference

liquid-cooledReference

Final drives

—

spur gearReference

Steering

—

manualReference

Engine

Fuel tank

94.6 LReference

75.7 LReference

Aux. fuel

29.3 LReference

7.6 LReference

Drawbar (claimed)

14.9 kWReference

Belt (claimed)

26.1 kWReference

29.8 kWReference

Plows

4Reference

4 (14-inch)Reference

Drawbar (tested)

24.8 kWReference

—

Belt (tested)

33.0 kWReference

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Displacement

7.6 LReference

11.7 LReference

Bore/Stroke

121 x 165 mmReference

140 x 190 mmReference

Fuel system

Kingston L 1.5" carburetorReference

Kingston carburatorReference

Air cleaner

oil bathReference

—

Rated RPM

930Reference

650Reference

Coolant capacity

37.9 LReference

—

Belt power (max)

33.0 kWReference

—

Max power

24.8 kWReference

—

Starter type

—

hand-crankReference

Transmission

Type

unsynchronized gearReference

gearReference

Gears

2 forward and 1 reverseReference

3 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

—

Dimensions

Weight

3011 kgReference

3039 kgReference

Front tire

36x6Reference

—

Rear tire

50x12Reference

60x12Reference

Ag front

36x6 steelReference

—

Ag rear

50x12 steelReference

60x12 (steel)Reference

Length

342 cmReference

350 cmReference

Height

172 cmReference

182 cmReference

20-35 Serial Numbers

1923

6161Reference

—

1924

6397Reference

—

1925

6755Reference

—

1926

7369Reference

—

1927

8070Reference

—

1928

9870Reference

—

1929

16762Reference

—

1930

23252Reference

—

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.Reference

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Final

24185Reference

—

Capacities

Diameter

33 cmReference

45 cmReference

Width

167 cmReference

182 cmReference

RPM

930Reference

650Reference

Speed

—

932.69 meters/minReference

Test results

Belt fuel use (max)

18.9 l/hourReference

—

Max pull

1995 kgReference

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Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.