Wallis
Wallis OK 15-27
The Wallis OK 15-27 is a standard-tread tractor produced from 1923 to 1927 by Wallis, a part of J.I. Case Plow Works, built in Racine, Wisconsin, USA. It features a Wallis 5.3L 4-cylinder gasoline liquid-cooled engine with a displacement of 326.3 ci, rated at 1000 RPM, and started by hand-crank. The tractor has a 2-speed gear transmission with 2 forward and 1 reverse gears. It delivers a claimed drawbar power of 15 hp and belt power of 27 hp, with tested drawbar and belt powers of 18.15 hp and 28.60 hp respectively. The tractor is two-wheel drive with manual steering. Dimensions include a length of 132 inches, width of 61 inches, height of 65 inches, and weight of 3,630 lbs. It rides on steel tires sized 30x8 front and 48x12 rear. The belt pulley diameter is 18.5 inches with a width of 7 inches, running at 475 RPM and a speed of 2,300 ft/min.
Power-
Founded-
ModelOK 15-27
Technical Specifications
Detailed specifications and technical data for Wallis OK 15-27
Power
| Belt (tested) | 28.60 hp (21.3 kW) |
|---|---|
| Belt (claimed) | 27 hp (20.1 kW) |
| Drawbar (tested) | 18.15 hp (13.5 kW) |
| Drawbar (claimed) | 15 hp (11.2 kW) |
Tires
| Rear tire | 48x12 (steel) |
|---|---|
| Front tire | 30x8 (steel) |
Engine
| Rated RPM | 1000 |
|---|---|
| Bore/Stroke | 4.25x5.75 inches (108 x 146 mm) |
| Displacement | 326.3 ci (5.3 L) |
| Starter type | hand-crank |
| Engine Detail | Wallis gasoline 4-cylinder liquid-cooled |
Dimensions
| Width | 61 inches (154 cm) |
|---|---|
| Height | 65 inches (165 cm) |
| Length | 132 inches (335 cm) |
| Weight | 3,630 lbs (1646 kg) |
Mechanical
| Drive | Two-wheel drive |
|---|---|
| Steering | manual |
Production
| Type | Standard-tread tractor |
|---|---|
| Built in | Racine, Wisconsin, USA |
| Manufacturer | Wallis (a part of J.I. Case Plow Works) |
| Production years | 1923 - 1927 |
Belt Pulley
| RPM | 475 |
|---|---|
| Speed | 2,300 ft/min (701.04 meters/min) |
| Width | 7 inches (17 cm) |
| Diameter | 18.5 inches (46 cm) |
Transmission
| Type | gear |
|---|---|
| Gears | 2 forward and 1 reverse |