Overview
The Coleman Model B is a standard-tread farm tractor produced in Kansas City, Missouri, from 1919 to 1922. It is equipped with a 501.4 ci Climax 4-cylinder liquid-cooled kerosene engine, manual steering, and an open operator station.
Ideal Applications
Tested Power Output:
In Nebraska Tractor Test 35, the Model B achieved a maximum belt power of 30.41 hp and a maximum drawbar pull of 2690 lbs while operating on kerosene.
Mechanical Configuration:
The tractor features a single-speed gear transmission with one forward and one reverse gear, utilizing a worm gear final drive system.
Physical Dimensions and Equipment:
The 5100-pound unit is built on an 86-inch wheelbase with steel ag tires measuring 34x4 inches in the front and 44x10 inches in the rear.
Production
| Description | Standard-tread tractor / Built in Kansas City, Missouri, USA / Original price was $1,850 in 1920 |
|---|---|
| Manufacturer | Coleman |
Engine
| Aux. fuel | 4 gal (15.1 L) |
|---|---|
| Engine type | Climax 8.2L 4-cyl kerosene |
| Fuel tank | 16 gal (60.6 L) |
| Air cleaner | dry |
| Bore/Stroke | 5.00x6.50 inches (127 x 165 mm) |
| Coolant capacity | 48 qts (45.4 L) |
| Description | Climax K / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 501.4 ci (8.2 L) |
| Fuel system | Stromberg carburetor |
| Rated RPM | 800 |
| Belt (claimed) | 30 hp (22.4 kW) |
| Belt (tested) | 30.41 hp (22.7 kW) |
| Drawbar (claimed) | 16 hp (11.9 kW) |
| Drawbar (tested) | 15.87 hp (11.8 kW) |
| Plows | 3 (14-inch) |
Transmission
| Gears | 1 forward and reverse |
|---|---|
| Transmission type | 1-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Mechanical disc brakes |
| Drive type | Two-wheel drive |
| Final drives | worm gear |
Dimensions & Tires
| Ag front | 34x4 (steel) |
|---|---|
| Ag rear | 44x10 (steel) |
| Height | 70 inches (177 cm) |
| Length | 136 inches (345 cm) |
| Weight | 5100 lbs (2313 kg) |
| Wheelbase | 86 inches (218 cm) |
| Width | 69 inches (175 cm) |
| Front tire | 34x4 |
| Rear tire | 44x10 |
| Weight | 5100 lbs (2313 kg) |
| Wheelbase | 86 inches (218 cm) |
B Serial Numbers
| Location: | Serial number on the top of the right fender. |
|---|
Belt Pulley
| Diameter | 12 inches (30 cm) |
|---|---|
| Speed | 2100 ft/min (640.08 meters/min) |
| Width | 7 inches (17 cm) |
Nebraska Tractor Test 35
| Belt fuel use (max) | 5.7 gal/hour (21.6 l/hour) |
|---|---|
| Belt power (max) | 30.41 hp (22.7 kW) |
| Description | July 16 - 21, 1920Link: Nebraska Tractor Test 35 file / Drawbar performance |
| Max power | 15.87 hp (11.8 kW) |
| Max pull | 2690 lbs (1220 kg) |