Heider C 15-27

The Heider C 15-27 is a tractor produced by Heider. It is equipped with a 478 ci 7.8 L engine. The rated power output is 30.00 hp 22.4 kW. Transmission: 7 forward and reverse.

Overview

	1924 - 1927 Standard-tread tractor
1924 - 1927
Standard-tread tractor

Production
Manufacturer	Heider (a part of Rock Island)
Standard-tread tractor
Built in Rock Island, Illinois, USA

Heider C 15-27 Engine
Waukesha 7.8L 4-cyl kerosene
Fuel tank	21 gal 79.5 L
Engine details ...

Heider C 15-27 Transmission
7-speed unsynchronized gear
Transmission details ...

Heider C 15-27 Power
Drawbar (claimed)	15 hp 11.2 kW
Belt (claimed)	27 hp 20.1 kW
Drawbar (tested)	21.54 hp 16.1 kW
Belt (tested)	30.00 hp 22.4 kW
Performance test details ...

Mechanical
Two-wheel drive
Steering	manual
Four-post canopy.

Dimensions & Tires
Wheelbase	96 inches 243 cm
Front tire	30x5
Rear tire	57x10
Full dimensions and tires ...

Links
Heider 15-27: information at RIPC site

Engine

Engine Detail — 478 ci / 7.8 L Kerosene

Manufacturer	Waukesha
Fuel Type	Kerosene
Configuration	4-cylinder, liquid-cooled
Displacement	478 ci 7.8 L
Bore/Stroke	4.75x6.75 inches 121 x 171 mm
Rated RPM	900
Coolant capacity	36 qts 34.1 L

Transmission

Transmission — 7 forward and reverse unsynchronized gear

Type	unsynchronized gear
Gears	7 forward and reverse

Dimensions

Heider C 15-27 Tires
Ag front	30x5 steel
Ag rear	57x10 steel

Dimensions
Wheelbase	96 inches 243 cm
Length	144 inches 365 cm
Width	74 inches 187 cm
Height	96 inches 243 cm

Tests

Nebraska Tractor Test 114
Kerosene 7-speed 2WD May 7 - 13, 1925 Link: Nebraska Tractor Test 114 file
Belt power (max)	30.00 hp 22.4 kW
Belt fuel use (max)	4.6 gal/hour 17.4 l/hour
Drawbar performance
Max power	21.54 hp 16.1 kW
Gear 1 used for power test.
Max pull	3,302 lbs 1497 kg
Gear 1 used for pull test.