Overview
The Heider C 15-27 is a standard-tread farm tractor produced between 1924 and 1927 in Rock Island, Illinois, featuring a Waukesha 7.8L four-cylinder kerosene engine. This model is equipped with a seven-speed unsynchronized gear transmission providing seven forward and reverse speeds, and it is configured with steel wheels and a four-post canopy. Nebraska Tractor Test 114 verified a maximum belt power of 30.00 hp and a maximum drawbar pull of 3,302 lbs.
Ideal Applications
Tested Power and Efficiency:
During Nebraska Tractor Test 114, the 478 ci liquid-cooled engine produced a maximum of 30.00 hp at the belt with a fuel consumption rate of 4.6 gallons of kerosene per hour.
Transmission and Drive Configuration:
The mechanical layout consists of a two-wheel drive system managed by a seven-speed unsynchronized gear transmission offering equal speeds in both forward and reverse.
Chassis and Tire Specifications:
This tractor is built on a 96-inch wheelbase and utilizes 30x5 steel front tires and 57x10 steel rear tires with manual steering and a total height of 96 inches.
Production
| Description | Standard-tread tractor / Built in Rock Island, Illinois, USA |
|---|---|
| Manufacturer | Heider (a part of Rock Island) |
Engine
| Engine type | Waukesha 7.8L 4-cyl kerosene |
|---|---|
| Fuel tank | 21 gal (79.5 L) |
| Bore/Stroke | 4.75x6.75 inches (121 x 171 mm) |
| Coolant capacity | 36 qts (34.1 L) |
| Description | Waukesha / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 478 ci (7.8 L) |
| Rated RPM | 900 |
| Belt (claimed) | 27 hp (20.1 kW) |
| Belt (tested) | 30.00 hp (22.4 kW) |
| Drawbar (claimed) | 15 hp (11.2 kW) |
| Drawbar (tested) | 21.54 hp (16.1 kW) |
Transmission
| Gears | 7 forward and reverse |
|---|---|
| Transmission type | 7-speed unsynchronized gear |
| Type | unsynchronized gear |
Mechanical
| Description | Four-post canopy. |
|---|---|
| Drive type | Two-wheel drive |
| Steering | manual |
Dimensions & Tires
| Height | 96 inches (243 cm) |
|---|---|
| Length | 144 inches (365 cm) |
| Wheelbase | 96 inches (243 cm) |
| Width | 74 inches (187 cm) |
| Front tire | 30x5 |
| Rear tire | 57x10 |
| Wheelbase | 96 inches (243 cm) |
| Ag front | 30x5 steel |
| Ag rear | 57x10 steel |
Links
| Description | Heider 15-27: information at RIPC site |
|---|
Nebraska Tractor Test 114
| Belt fuel use (max) | 4.6 gal/hour (17.4 l/hour) |
|---|---|
| Belt power (max) | 30.00 hp (22.4 kW) |
| Description | Kerosene 7-speed 2WDMay 7 - 13, 1925Link: Nebraska Tractor Test 114 file / Drawbar performance / Gear 1 used for power test. / Gear 1 used for pull test. |
| Max power | 21.54 hp (16.1 kW) |
| Max pull | 3,302 lbs (1497 kg) |