Full Specifications
NEBRASKA TRACTOR TEST 55
Description
Gasoline 2-speed 2WD/August 23 - September 6, 1920/Link: Nebraska Tractor Test 55 file/Drawbar performance
Belt power (max)
33.41 hp/24.9 kW
Belt fuel use (max)
4.6 gal/hour/17.4 l/hour
Max power
20.55 hp/15.3 kW
Fuel use
3.5 gal/hour/13.2 l/hour
Max pull
3,500 lbs/1587 kg
ALLIS CHALMERS 18-30 POWER
Drawbar (claimed)
18 hp/13.4 kW
Belt (claimed)
30 hp/22.4 kW
Plows
3
Drawbar (tested)
20.55 hp/15.3 kW
Belt (tested)
33.41 hp/24.9 kW
ENGINE DETAIL
Description
Allis Chalmers/gasoline/4-cylinder/liquid-cooled vertical valve-in-head
Displacement
460.7 ci/7.6 L
Bore/Stroke
4.75x6.50 inches/121 x 165 mm
Fuel system
Kingston L 1.5
Air cleaner
oil bath
Rated RPM
830
Coolant capacity
40 qts/37.9 L
ALLIS CHALMERS 18-30 ENGINE
Description
Allis Chalmers 7.6L 4-cyl gasoline
Fuel tank
25 gal/94.6 L
Aux. fuel
7.75 gal/29.3 L
TRANSMISSION
Type
unsynchronized gear
Gears
2 forward and 1 reverse
Clutch
hand-operated expanding shoe
MECHANICAL
Chassis
4x2 2WD
Cab
Open operator station.
Transmission
2-speed unsynchronized gear
ALLIS CHALMERS 18-30 TIRES
Ag front
36x6 steel
Ag rear
50x12 steel
DIMENSIONS
Length
135 inches/342 cm
Width
66 inches/167 cm
Height
68 inches/172 cm
Weight
6150 lbs/2789 kg
DIMENSIONS & TIRES
Weight
6150 lbs/2789 kg
Front tire
36x6
Rear tire
50x12
18-30 SERIAL NUMBERS
Location
front of shifter on transmission case
1919
5000
----
5006
1920
5161
1921
6015
1922
????
BELT PULLEY
Diameter
13 inches/33 cm
Width
8.5 inches/21 cm
RPM
930
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