| Manufacturer | Minneapolis-Moline |
| Price | 5,000(USD) |
| Model | GB |
| Equipment Type | Standard-Tread Tractors |
| Factory | Minneapolis, Minnesota, USA |
NEBRASKA TRACTOR TEST 545 2
| Description | LP gas 5-speed 2WD May 31 - June 7, 1955 Link: Nebraska Tractor Test 545 file Drawbar performance Gear 3 used for power test Gear 1 used for pull test |
| Belt power (max) | 70.55hp / 52.6kW |
| Belt fuel use (max) | 7.5gal/hour / 28.4l/hour |
| Max power | 62.14hp / 46.3kW |
| Fuel use | 7.5gal/hour / 28.4l/hour |
| Max pull | 7094lbs / 3217kg |
NEBRASKA TRACTOR TEST 547 2
| Description | Gasoline 5-speed 2WD June 8 - 15, 1955 Link: Nebraska Tractor Test 547 file Drawbar performance Gear 3 used for power test. Gear 1 used for pull test |
| Belt power (max) | 65.64hp / 48.9kW |
| Belt fuel use (max) | 6.0gal/hour / 22.7l/hour |
| Max power | 46.26hp / 34.5kW |
| Fuel use | 4.6gal/hour / 17.4l/hour |
| Max pull | 6718lbs / 3047kg |
NEBRASKA TRACTOR TEST 568 2
| Description | Diesel 5-speed 2WD November 1 - 7, 1955 Link: Nebraska Tractor Test 568 file Drawbar performance Gear 3 used for power test. Gear 1 used for pull test |
| Belt power (max) | 62.78hp / 46.8kW |
| Belt fuel use (max) | 4.1gal/hour / 15.5l/hour |
| Max power | 63.70hp / 47.5kW |
| Fuel use | 4.7gal/hour / 17.8l/hour |
| Max pull | 7333lbs / 3326kg |
MINNEAPOLIS-MOLINE GB POWER
| Drawbar (claimed) | 50hp / 37.3kW |
| PTO (claimed) | 64hp / 47.7kW |
| Plows | 5 |
| Drawbar (tested) | 63.70hp / 47.5kW |
| Belt (tested) | 70.55hp / 52.6kW |
ENGINES OVERVIEW
The Minneapolis-Moline GB tractor features various powertrain options, including a 6.6L 4-cylinder gasoline engine, a more robust 7.0L 6-cylinder diesel engine, and a 6.6L 4-cylinder LP gas variant, allowing flexibility in fuel choice depending on operational needs and availability. The diesel variant offers higher torque, benefiting heavier applications and fuel efficiency, while the gasoline and LP options provide lower emissions and potentially easier start-up in cold conditions. However, the choice of engine may influence maintenance complexity, particularly with the diesel engine, which may require more frequent servicing for optimal performance.
| Description | Minneapolis-Moline 6.6L 4-cyl gasoline Minneapolis-Moline 7.0L 6-cyl diesel Minneapolis-Moline 6.6L 4-cyl LP gas |
ENGINE DETAIL 1
The Minneapolis-Moline GB tractor, equipped with a 403.2 ci (6.6L) 4-cylinder gasoline engine, provides substantial torque at a low rated RPM of 1300, making it ideal for heavy-duty applications such as plowing or tilling. With a bore and stroke of 4.625x6.00 inches, this engine design offers a robust power delivery; however, the low compression ratio of 5.74:1 may limit its efficiency compared to modern alternatives. The tractor's 12-volt starter system ensures reliable ignition, although operators should be cautious of fuel efficiency and emissions with the vintage combustion design in contemporary agricultural practices.
| Description | Minneapolis-Moline 403C-4 gasoline 4-cylinder liquid-cooled |
| Displacement | 403.2ci / 6.6L |
| Bore/Stroke | 4.625x6.00inches / 117x 152 mm |
| Compression | 5.74:1 |
| Rated RPM | 1300 |
| Starter volts | 12 |
ENGINE DETAIL 2
The Minneapolis-Moline GB features a robust D425-6 diesel engine with a substantial displacement of 7.0L, providing high torque suitable for heavy-duty applications. With a compression ratio of 14.9:1, it offers efficient combustion, enabling better fuel economy and power at lower RPMs (1300), which is ideal for tasks such as plowing or hauling. However, the relatively lower RPM may limit the top speed for certain field operations, making it less versatile for high-speed transport scenarios.
| Description | Minneapolis-Moline D425-6 diesel 6-cylinder liquid-cooled |
| Displacement | 425.5ci / 7.0L |
| Bore/Stroke | 4.25x5.00inches / 108x 127 mm |
| Compression | 14.9:1 |
| Rated RPM | 1300 |
| Starter volts | 12 |
ENGINE DETAIL 3
The Minneapolis-Moline GB tractor features a 403.2 ci (6.6 L) 4-cylinder liquid-cooled engine, providing robust torque at a rated RPM of 1300, making it suitable for heavy-duty applications. With a compression ratio of 8.37:1, it can efficiently run on LP gas, though potential challenges include fuel availability and maintaining liquid-cooled systems for optimal performance. Its bore/stroke ratio of 4.625x6.00 inches suggests a focus on low-end torque, beneficial for plowing and tillage scenarios.
| Description | Minneapolis-Moline 403C-4/LP gas/4-cylinder/liquid-cooled |
| Displacement | 403.2ci / 6.6L |
| Bore/Stroke | 4.625x6.00inches / 117x 152 mm |
| Compression | 8.37:1 |
| Rated RPM | 1300 |
| Starter volts | 12 |
MINNEAPOLIS-MOLINE GB ENGINES
The Minneapolis-Moline GB tractor features engine options including a 6.6L 4-cylinder gasoline, 7.0L 6-cylinder diesel, and a 6.6L 4-cylinder LP gas, providing versatility for varying fuel preferences and operational costs. The 7.0L diesel engine generally offers superior torque and fuel efficiency, making it ideal for heavy-duty tasks, while the gasoline and LP gas options may excel in lighter, less intensive applications. However, prospective users should consider maintenance complexity and fuel availability when choosing between fuel types, especially in remote operations.
| Description | Minneapolis-Moline 6.6L 4-cyl gasoline/Minneapolis-Moline 7.0L 6-cyl diesel/Minneapolis-Moline 6.6L 4-cyl LP gas |
TRANSMISSION
The Minneapolis-Moline GB tractor features a 5-speed forward and 1-reverse gear transmission, allowing versatile speed management for varied agricultural tasks, from plowing to transport. The dry disc clutch provides reliable engagement and durability but may require more maintenance than hydraulic systems. In challenging conditions, such as muddy fields, the gear system enables better maneuverability, though operators should be prepared for potential slippage if the clutch isn't adjusted correctly.
| Type | gear |
| Gears | 5 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The Minneapolis-Moline GB tractor features a robust 4x2 2WD chassis, which offers ease of maneuverability in tight spaces but may present challenges in traction on uneven terrain compared to 4WD alternatives. The disc braking system ensures reliable stopping power, enhancing safety during operation. An open operator station facilitates visibility and air circulation but may expose the operator to the elements, impacting comfort during extended use.
| Chassis | 4x2 2WD |
| Brakes | disc |
| Cab | Open operator station. |
| Transmission | 5-speed gear |
POWER TAKE-OFF (PTO)
| Rear PTO | transmission/live. Live PTO via hand clutch on rear axle. |
| Rear RPM | 540 (1.375) |
| Engine RPM | 585@1300 |
MINNEAPOLIS-MOLINE GB TIRES
The Minneapolis-Moline GB tractor features a robust tire configuration with Ag front tires (7.50-18) and substantial Ag rear tires (14-34), providing excellent traction and stability in various agricultural conditions. This setup enhances the tractor's ability to handle heavy loads and challenging terrains, making it suitable for larger farming operations. However, the larger rear tires may present challenges in tight spaces or on smaller plots, requiring careful maneuvering.
| Ag front | 7.50-18 |
| Ag rear | 14-34 |
DIMENSIONS
| Wheelbase | 82.5inches / 209cm |
| Length | 137.6inches / 349cm |
| Width | 83inches / 210cm |
| Height (steering wheel) | 71inches / 180cm |
| Height (hood) | 67.125inches / 170cm |
| Operating weight | 7100lbs / 3220kg |
| Ballasted weight | 12000lbs / 5443kg |
| Clearance (front axle) | 14.75inches / 37cm |
| Clearance (rear axle) | 15.625inches / 39cm |
| Front tread | 54.25inches / 137cm |
| Rear tread | 62inches / 157cm |
DIMENSIONS & TIRES
The Minneapolis-Moline GB tractor features a wheelbase of 82.5 inches, which enhances stability during operation and maneuverability in tighter spaces. Weighing 7100 lbs, it offers a robust presence for field applications, yet users must consider the need for adequate soil compaction management. The tire configuration—7.50-18 in the front and 14-34 in the rear—provides optimized traction and flotation for various terrains, making it suitable for agricultural tasks but may require specific maintenance for tire wear and pressure management.
| Wheelbase | 82.5inches / 209cm |
| Weight | 7100lbs / 3220kg |
| Front tire | 7.50-18 |
| Rear tire | 14-34 |
GB SERIAL NUMBERS
| Location | Serial number plate on the right side of the Minneapolis-Moline GB tractor frame, just ahead of the operator platform. |
BELT PULLEY
| Diameter | 16inches / 40cm |
| Width | 7 inches /17 cm |
| RPM | 741 |
| Speed | 3104ft/min / 946.10 meters/min |