CO-OP 2
The CO-OP 2 is a tractor produced by Co Op. It is equipped with a 201.3 ci 3.3 L engine. The listed engine power is 31.66 hp 23.6 kW. Transmission: 5 forward and 1 reverse. Operating weight: 5,000 lbs 2268 kg.
Engine Power
31.66 hp
23.6 kW
Fuel & Capacities
22 gal
83.3 L
Transmission
5 forward and 1 reverse
Operating Weight
5,000 lbs
2268 kg
Overview
 | 1936 - ????
Row-Crop tractorDuplex Machinery built |
|---|---|
1936 - ???? | |
Row-Crop tractor | |
Duplex Machinery built | |
1936 - ???? | |
|---|---|
Row-Crop tractor | |
Duplex Machinery built |
Production | |
|---|---|
Distributor | CO-OP |
Manufacturer | Duplex Machinery |
Row-Crop tractor | |
Built in Battle Creek, Michigan, USA | |
CO-OP 2 Engine | |
|---|---|
Chrysler 3.3L 6-cyl gasoline | |
Fuel tank | 22 gal
83.3 L |
Engine details ...  | |
CO-OP 2 Transmission | |
|---|---|
5-speed unsynchronized gear | |
Transmission details ...  |
CO-OP 2 Power | |
|---|---|
Plows | 2 (14-inch) |
Drawbar (tested) | 29.67 hp
22.1 kW |
PTO (tested) | 31.66 hp
23.6 kW |
Belt (tested) | 33.17 hp
24.7 kW |
Performance test details ...  | |
Mechanical | |
|---|---|
Two-wheel drive | |
Open operator station. |
Dimensions & Tires | |
|---|---|
Weight | 5,000 lbs
2268 kg |
Front tire | 6.00-16 |
Rear tire | 11.25-28 |
Full dimensions and tires ...  | |
Engine
| 1936 - ????
Row-Crop tractorDuplex Machinery built |
|---|---|
1936 - ???? | |
Row-Crop tractor | |
Duplex Machinery built | |
1936 - ???? | |
|---|---|
Row-Crop tractor | |
Duplex Machinery built |
Engine Detail — 201.3 ci / 3.3 L Gasoline
Manufacturer | Chrysler |
Fuel Type | Gasoline |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 201.3 ci
3.3 L |
Bore/Stroke | 3.125x4.375 inches
79 x 111 mm |
Rated RPM | 1500 |
Coolant capacity | 18 qts
17.0 L |
Transmission
| 1936 - ????
Row-Crop tractorDuplex Machinery built |
|---|---|
1936 - ???? | |
Row-Crop tractor | |
Duplex Machinery built | |
1936 - ???? | |
|---|---|
Row-Crop tractor | |
Duplex Machinery built |
Transmission — 5 forward and 1 reverse unsynchronized gear
Type | unsynchronized gear |
Gears | 5 forward and 1 reverse |
 | |
Dimensions
| 1936 - ????
Row-Crop tractorDuplex Machinery built |
|---|---|
1936 - ???? | |
Row-Crop tractor | |
Duplex Machinery built | |
1936 - ???? | |
|---|---|
Row-Crop tractor | |
Duplex Machinery built |
CO-OP 2 Tires | |
|---|---|
Ag front | 6.00-16 |
Ag rear | 11.25-28 |
Dimensions | |
|---|---|
Length | 124.75 inches
316 cm |
Width | 76.5 inches
194 cm |
Height | 57.5 inches
146 cm |
Operating weight | 5,000 lbs
2268 kg |
Tests
| 1936 - ????
Row-Crop tractorDuplex Machinery built |
|---|---|
1936 - ???? | |
Row-Crop tractor | |
Duplex Machinery built | |
1936 - ???? | |
|---|---|
Row-Crop tractor | |
Duplex Machinery built |
Nebraska Tractor Test 275 | |
|---|---|
Gasoline 5-speed 2WD
October 22 - November 10, 1936
Link: Nebraska Tractor Test 275 file | |
Belt power (max) | 33.17 hp
24.7 kW |
Belt fuel use (max) | 3.5 gal/hour
13.2 l/hour |
PTO performance | |
Power at rated engine speed | 31.66 hp
23.6 kW |
Fuel use | 2.9 gal/hour
11.0 l/hour |
Drawbar performance | |
Max power | 29.67 hp
22.1 kW |
Gear 3 used for power test. | |
Max pull | 1,980 lbs
898 kg |
Gear 1 used for pull test. | |
Photos
Tricycle-front axle on CO-OP 2
Tricycle-front axle on CO-OP 2
CO-OP 2 with standard front axle
CO-OP 2 operator station and controls.
Recommended Implements & Sizing Guide
Engineering recommendations for Co Op CO-OP 2 based on its 31.66 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Co Op CO-OP 2.
Estimated Continuous Field Runtime: 13.4 hrs
Approximately 13.4 hours of continuous field operation at ~75% rated power on a full tank (22 gal / 83.3 L).
Estimated 75% Load Fuel Burn~1.6 gal/hr (6.2 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Co Op CO-OP 2 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Co Op CO-OP 2.
Converted Equivalents:
Horsepower (HP)31.7 hp
Kilowatts (kW)23.6 kW
Metric Horsepower (PS / CV)32.1 PS
Direct Competitor Comparison
Compare CO-OP 2 against same-era industry alternatives in the same horsepower class.
Current Model
Co Op
CO-OP 2
Engine Power:31.66 hp
23.6 kW
★ Baseline Reference
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