CO-OP B1

The CO-OP B1 is a tractor produced by Co Op. It is equipped with a 113.12 ci 1.9 L engine. Transmission: 3 forward and 1 reverse. Operating weight: 2105 lbs 954 kg.

Fuel & Capacities
12 gal 45.4 L
Transmission
3 forward and 1 reverse
Operating Weight
2105 lbs 954 kg

Overview

CO-OP B1 tractor photo
1941 - 1942 Row-Crop tractorCletrac built Row-Crop tractor Cletrac built
Note: the CO-OP model B1 is the same as the Cletrac General GG. The following data is from the General GG listing.
Production
Distributor
CO-OP
Manufacturer
Cletrac
Row-Crop tractor
Built in Cleveland, Ohio, USA
Total built
7,527
CO-OP B1 Engine
Hercules 1.9L 4-cyl gasoline
Fuel tank
12 gal 45.4 L
Engine details ...
CO-OP B1 Transmission
3-speed gear
Transmission details ...
CO-OP B1 Power
Belt (claimed)
18 hp 13.4 kW
Plows
1 (14-inch)
Drawbar (tested)
14.26 hp 10.6 kW
Belt (tested)
19.29 hp 14.4 kW
Performance test details ...
Mechanical
Two-wheel drive
Manual steering
Open operator station.
Power Take-off (PTO)
Mid PTO Type
560
Dimensions & Tires
Wheelbase
80 inches 203 cm
Weight
2105 lbs 954 kg
Front tire
5.50-16
Rear tire
9-24
Full dimensions and tires ...
Links
Cletrac General GG: article at Yesterday's Tractor Co
Belt Pulley
Diameter
9.5 inches 24 cm
Width
5.5 inches 13 cm
RPM
1065
Speed
2825 ft/min 861.06 meters/min

Engine

Note: the CO-OP model B1 is the same as the Cletrac General GG. The following data is from the General GG listing.

Engine Detail — 113.12 ci / 1.9 L Gasoline

Manufacturer
Hercules IXA3
Fuel Type
Gasoline
Configuration
4-cylinder, liquid-cooled
Displacement
113.12 ci 1.9 L
Bore/Stroke
3.00x4.00 inches 76 x 102 mm
Air cleaner
oil bath
Compression
5.75:1
Rated RPM
1400 (drawbar)
1700 (belt)
Starter type
manual start
Oil capacity
5 qts 4.7 L
Coolant capacity
12 qts 11.4 L

Transmission

Note: the CO-OP model B1 is the same as the Cletrac General GG. The following data is from the General GG listing.

Transmission — 3 forward and 1 reverse gear

Type
gear
Gears
3 forward and 1 reverse
Clutch
9-inch dry plate
Oil capacity
10 qts 9.5 L
B1  gear speeds

Dimensions

Note: the CO-OP model B1 is the same as the Cletrac General GG. The following data is from the General GG listing.
CO-OP B1 Tires
Ag front
5.50-16
Ag rear
9-24
Dimensions
Wheelbase
80 inches 203 cm
Length
118 inches 299 cm
Height (hood)
55 inches 139 cm
Shipping weight
2105 lbs 954 kg
Ballasted weight
3115 lbs 1412 kg

Tests

Note: the CO-OP model B1 is the same as the Cletrac General GG. The following data is from the General GG listing.
Nebraska Tractor Test 323
Gasoline 3-speed 2WD August 10 - 30, 1939 Link: Nebraska Tractor Test 323 file
Belt power (max)
19.29 hp 14.4 kW
Drawbar performance
Max power
14.26 hp 10.6 kW
Gear 3 used for power test.
Max pull
1699 lbs 770 kg
Gear 1 used for pull test.

Photos

CO-OP B1

CO-OP B1

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Co Op CO-OP B1.

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 B1 Specification Unit Converter

Convert power, fluid capacities, and operating weights between metric and imperial standards for Co Op CO-OP B1.

Converted Equivalents:

Horsepower (HP)0 hp
Kilowatts (kW)0 kW
Metric Horsepower (PS / CV)0 PS
  • CO-OP E5

    Power:
    54.4
    Production years:
    1953 - 1957
  • CO-OP E2

    Power:
    33.3
    Production years:
    1952 - 1953
  • CO-OP E4

    Power:
    47.8
    Production years:
    1949 - 1958
  • CO-OP 3S

    Power:
    -1
    Production years:
    1948 - 1951
  • CO-OP E3

    Power:
    31.1
    Production years:
    1946 - 1957