Overview
The Wetmore 12-25 is a 2WD farm tractor produced in Sioux City, Iowa, between 1919 and 1938. It features an open operator station and was offered with three different four-cylinder kerosene engines from Rutenber, Weidely, and Waukesha.
Ideal Applications
Tested Power Output:
In Nebraska Tractor Test 73, the tractor achieved a maximum belt power of 27.94 hp and a maximum drawbar pull of 2,525 lbs.
Transmission and Drive Configuration:
The mechanical layout consists of a three-speed Fuller gear transmission with a dry disc clutch and internal spur gear final drives.
Physical Dimensions and Chassis:
Equipped with steel ag tires, the 2,900-pound machine has a 74-inch wheelbase and provides 17 inches of clearance at the rear axle.
Production
| Description | Standard-tread tractor / Built in Souix City, Iowa, USA |
|---|---|
| Manufacturer | Wetmore |
| Original price | $2,485 (1920 ) |
Engine
| Bore/Stroke | 4.125x5.50 inches (105 x 140 mm) / 4.00x5.50 inches (102 x 140 mm) / 4.00x5.75 inches (102 x 146 mm) |
|---|---|
| Description | Rutenber / kerosene / 4-cylinder / liquid-cooled / Weidely / kerosene / 4-cylinder / liquid-cooled / Waukesha / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 294 ci (4.8 L) / 276.5 ci (4.5 L) / 289.02 ci (4.7 L) |
| Fuel system | Kingston carburetor / carburetor / Kingston carburetor |
| Rated RPM | 1265 / 950 |
| Starter type | hand crank / hand crank / hand crank |
| Engine type | Rutenber 4.8L 4-cyl kerosene / Weidely 4.5L 4-cyl kerosene / Waukesha 4.7L 4-cyl kerosene |
| Belt (claimed) | 25 hp (18.6 kW) |
| Belt (tested) | 27.94 hp (20.8 kW) |
| Drawbar (claimed) | 12 hp (8.9 kW) |
| Drawbar (tested) | 16.10 hp (12.0 kW) |
| Plows | 2 *14-inch |
| Engine type | Rutenber 4.8L 4-cyl kerosene / Weidely 4.5L 4-cyl kerosene / Waukesha 4.7L 4-cyl kerosene |
Transmission
| Clutch | dry disc |
|---|---|
| Gears | 3 forward and 1 reverse |
| Transmission | Fuller |
| Transmission type | 3-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering / Mechanical drum brakes |
| Drive type | Two-wheel drive |
| Final drives | internal spur gear |
Dimensions & Tires
| Clearance (front axle) | 12.5 inches (31 cm) |
|---|---|
| Clearance (rear axle) | 17 inches (43 cm) |
| Rear tread | 53 inches (134 cm) |
| Weight | 2900 lbs (1315 kg) |
| Wheelbase | 74 inches (187 cm) |
| Front tire | 28x5 |
| Rear tire | 46x10 |
| Weight | 2900 lbs (1315 kg) |
| Wheelbase | 74 inches (187 cm) |
| Ag front | 28x5 (steel) |
| Ag rear | 46x10 (steel) |
Belt Pulley
| Diameter | 12 inches (30 cm) |
|---|---|
| RPM | 800 |
| Width | 7 inches (17 cm) |
Nebraska Tractor Test 73
| Belt fuel use (max) | 3.5 gal/hour (13.2 l/hour) |
|---|---|
| Belt power (max) | 27.94 hp (20.8 kW) |
| Description | Kerosene 3-speed 2WDApril 6 - 12, 1921Link: Nebraska Tractor Test 73 file / Drawbar performance |
| Max power | 16.10 hp (12.0 kW) |
| Max pull | 2525 lbs (1145 kg) |