Allis Chalmers RC

The Allis Chalmers RC is a tractor produced by Allis Chalmers. It is equipped with a 125.2 ci 2.1 L engine. The listed engine power is 16.24 hp 12.1 kW. Transmission: 4 forward and 1 reverse. Operating weight: 2495 to 3204 pounds.

Engine Power

16.24 hp 12.1 kW

Fuel & Capacities

13 gal 49.2 L

Transmission

4 forward and 1 reverse

Operating Weight

2495 to 3204 pounds

Overview

	1938 - 1941 Row-Crop tractor

Production
Manufacturer	Allis Chalmers
Row-Crop tractor
Built in West Allis, Wisconsin, USA
Total built	5,501
The Allis Chalmers RC was a less-expensive version of the WC, using the engine from a B in the chassis of the WC. It used the same frame so it could mount the same implements as the WC. The RC sold poorly, and was replaced by the successful Allis model C.

Allis Chalmers RC Engine
Allis-Chalmers 2.1L 4-cyl distillate
Fuel tank	13 gal 49.2 L
Aux. fuel	1 gal 3.8 L
Engine details ...

Allis Chalmers RC Transmission
4-speed non-synchronized gear
Transmission details ...

Allis Chalmers RC Power
Drawbar (claimed)	12 hp 8.9 kW
Belt (claimed)	16 hp 11.9 kW
Plows	2
Drawbar (tested)	12.11 hp 9.0 kW
PTO (tested)	16.24 hp 12.1 kW
Performance test details ...

Mechanical
Two-wheel drive

Dimensions & Tires
Weight	2495 to 3204 pounds
Front tire	4.75-15
Rear tire	10-28
Full dimensions and tires ...

References

Model RC Tractor published in 1940, by Allis Chalmers

Engine

Engine Detail — 125.2 ci / 2.1 L

Manufacturer	Allis-Chalmers
Configuration	4-cylinder, liquid-cooled vertical I-head
distillate
Displacement	125.2 ci 2.1 L
Bore/Stroke	3.375x3.50 inches 86 x 89 mm
Compression	4.75:1
Rated RPM	1500
Firing order	1-2-4-3
Coolant capacity	9 qts 8.5 L

Transmission

Transmission — 4 forward and 1 reverse non-synchronized gear

Type	non-synchronized gear
Gears	4 forward and 1 reverse

Dimensions

Allis Chalmers RC Tires
Ag front	4.75-15
Ag rear	10-28
Ag front	24x4 steel
Ag rear	40x6 steel

Dimensions
Length	126 inches 320 cm
Height	66 inches 167 cm

Allis Chalmers RC Weight
Shipping	2,495 lbs (steel) 1131 kg
	3,204 lbs (rubber) 1453 kg
Ballasted	4,005 lbs 1816 kg

Tests

Nebraska Tractor Test 316
Distillate April 1939
PTO performance
Power at rated engine speed	16.24 hp 12.1 kW
Fuel use	1.4 gal/hour 5.3 l/hour
Drawbar performance
Max power	12.11 hp 9.0 kW
Fuel use	1.3 gal/hour 4.9 l/hour

Photos

Allis-Chalmers RC with single front wheel.

Recommended Implements & Sizing Guide

Engineering recommendations for Allis Chalmers RC based on its 16.24 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	1 to 2 Bottom (12")1 - 2 铧 (30 cm)	Light Duty	Ideal for garden plots and light sandy soil.
Rotary Cutter / MowerMowing & Clearing	4 ft (48 in)1.2 m	Light Duty	Pasture clipping and light brush under 1" diameter.
Rotary TillerSeedbed Prep	42 to 48 in105 - 120 cm	Light Duty	Covers compact tractor tire width.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Allis Chalmers RC.

Estimated Continuous Field Runtime: 15.4 hrs

Approximately 15.4 hours of continuous field operation at ~75% rated power on a full tank (13 gal / 49.2 L).

Estimated 75% Load Fuel Burn~0.8 gal/hr (3.2 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours