Compare/Allis Chalmers B vs Allis Chalmers RC

Allis Chalmers B vs Allis Chalmers RC

Verdict: Allis Chalmers B vs Allis Chalmers RC

The Allis Chalmers B and the Allis Chalmers RC are both tractors — here is how they stack up on the figures that matter. Allis Chalmers B leads on rated power with 20 hp against 16 hp. Allis Chalmers B is the lighter machine (934 kg vs 2,495 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers RC holds more fuel (49.2 L vs 45.4 L) for longer stints between fills. In short: choose the Allis Chalmers B for outright pulling power, or the Allis Chalmers RC if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

20 hp

16 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

Gear 1 used for pull test.Reference

Drawbar performanceReference

Factories

Southampton, EnglandReference

—

Total built

120,783Reference

5,501Reference

Steering

manualReference

—

Variants

industrial tractorReference

—

Engine

Fuel tank

45.4 LReference

49.2 LReference

Plows

1 (16-inch)Reference

2Reference

Drawbar (tested)

14.5 kWReference

9.0 kWReference

Belt (tested)

16.6 kWReference

—

Displacement

1.9 LReference

2.1 LReference

Bore/Stroke

76 x 102 mmReference

86 x 89 mmReference

Air cleaner

oil bathReference

—

Compression

4.92:1Reference

4.75:1Reference

Rated RPM

1400Reference

1500Reference

Firing order

1-2-4-3Reference

Starter volts

6Reference

—

Oil capacity

5.7 LReference

—

Sparkplug

AC 45Reference

—

Sparkplug gap

1.016 mmReference

—

Point gap

0.508 mmReference

—

Intake valve clearance

0.254 mmReference

—

Exhaust valve clearance

0.254 mmReference

—

Coolant capacity

7.6 LReference

8.5 LReference

Belt power (max)

16.6 kWReference

—

Max power

14.5 kWReference

9.0 kWReference

Aux. fuel

—

3.8 LReference

Drawbar (claimed)

—

8.9 kWReference

Belt (claimed)

—

11.9 kWReference

Power at rated engine speed

—

12.1 kWReference

Transmission

Gears

3 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

dry discReference

—

Oil type

[0oC]Reference

—

32oF [0oC]↑

: SAE140Reference

—

32oF [0oC]↓

: SAE90Reference

—

PTO & Hydraulics

Type

unsynchronized gearReference

non-synchronized gearReference

Rear PTO

transmissionReference

—

Rear PTO Type

560Reference

—

PTO (tested)

—

12.1 kWReference

Dimensions

Wheelbase

186 cmReference

—

Weight

934 kgReference

2495 to 3204 poundsReference

Front tire

4.00-15Reference

4.75-15Reference

Rear tire

9-24Reference

10-28Reference

Ag front

4.00-15Reference

24x4 steelReference

Ag rear

8-38 (Asparagus Special)Reference

40x6 steelReference

Length

280 cmReference

320 cmReference

Height (exhaust)

194 cmReference

—

Shipping weight

934 kgReference

—

Ballasted weight

1901 kgReference

—

Ground clearance

71 cmReference

—

Front tread

96 to 152 cmReference

—

Rear tread

101 to 152 cmReference

—

Height

—

167 cmReference

Shipping

—

1453 kgReference

Ballasted

—

1816 kgReference

B Serial Number Location

B Serial Numbers

1938

97Reference

—

1939

11800Reference

4Reference

1940

33502Reference

4392Reference

1941

49721Reference

5417Reference

1942

56782Reference

—

1943

64501Reference

—

1944

65502Reference

—

1945

70210Reference

—

1946

1001 (IB)Reference

—

1947

1003 (IB)Reference

—

1948

1010 (IB)Reference

—

1949

1282 (IB)Reference

—

1950

1556 (IB)Reference

—

1951

4001 (EB)Reference

—

1952

6861 (EB)Reference

—

1953

9200 (EB)Reference

—

1954

11120 (EB)Reference

—

1955

124711Reference

—

1956

126497Reference

—

1957

127186Reference

—

Final

127461Reference

—

Capacities

Diameter

20 cmReference

—

Width

157 cmReference

—

RPM

1053Reference

—

Electrical

Ground

positiveReference

—

Charging system

generatorReference

—

Charging amps

12Reference

—

Battery volts

6Reference

—

Test results

Belt fuel use (max)

7.9 l/hourReference

—

Max pull

1209 kgReference

—

Fuel use

—

4.9 l/hourReference

RC Serial Numbers

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.