| Manufacturer | Huber |
| Price | - |
| Model | 21-39 Super Four |
| Equipment Type | Standard-Tread Tractors |
| Factory | Marion, Ohio, USA |
HUBER 21-39 SUPER FOUR POWER
| Drawbar (claimed) | 21 hp/15.7 kW |
| Belt (claimed) | 39 hp/29.1 kW |
| Plows | 4 |
ENGINE DETAIL
The Huber 21-39 Super Four's 7.6L 4-cylinder liquid-cooled Stearns gasoline engine offers robust performance with a large displacement, beneficial for heavy-duty applications. Its 1000 RPM rated speed indicates a focus on torque over high-speed operation, making it suitable for tasks requiring sustained power, such as plowing or hauling. However, the oil spray air cleaner may necessitate more frequent maintenance compared to dry filters, potentially impacting operational efficiency in dusty environments.
| Description | Stearns/gasoline/4-cylinder/liquid-cooled |
| Displacement | 461 ci/7.6 L |
| Bore/Stroke | 4.75x6.50 inches/121 x 165 mm |
| Air cleaner | oil spray |
| Rated RPM | 1000 |
| Coolant capacity | 40 qts/37.9 L |
HUBER 21-39 SUPER FOUR ENGINE
The Huber 21-39 Super Four is equipped with a Stearns 7.6L four-cylinder gasoline engine, providing a robust power output ideal for medium to heavy-duty farming tasks. Its 40-gallon fuel tank ensures extended operational time without frequent refueling, which can enhance productivity in larger fields or during prolonged tasks. However, fuel efficiency should be monitored, as gasoline engines typically have higher operating costs compared to diesel alternatives, which may affect long-term ownership expenses.
| Description | Stearns 7.6L 4-cyl gasoline |
| Fuel tank | 40 gal/151.4 L |
TRANSMISSION
The Huber 21-39 Super Four tractor features a simple gear system with 2 forward and 1 reverse gear, offering limited speed and operational flexibility, which can be advantageous for tasks needing precision over speed, like hauling or plowing in tight spaces. Its dry disc clutch ensures reliable engagement and disengagement, though it may require more frequent maintenance under heavy loads compared to wet clutches, which can handle higher torque loads more effectively. This model is ideally suited for small-scale farm operations or restoration projects where traditional functionality is prioritized over advanced performance features.
| Type | gear |
| Gears | 2 forward and 1 reverse |
| Clutch | dry disc |
MECHANICAL
The Huber 21-39 Super Four features a 4x2 2WD chassis, suitable for flat terrain but may struggle with traction on slopes or loose ground. The manual steering offers simplicity and reliability but can require more effort during prolonged operation. With a 2-speed gear transmission, operators can adapt to varying workloads effectively, although the lack of advanced transmission options may limit efficiency in diverse applications.
| Chassis | 4x2 2WD |
| Steering | manual |
| Cab | Open operator station. |
| Transmission | 2-speed gear |
HUBER 21-39 SUPER FOUR TIRES
The Huber 21-39 Super Four tractor features a robust steel frame with an agricultural front tire size of 40x5 inches and a rear tire size of 56x14 inches, providing enhanced stability and load-carrying capacity for heavy-duty tasks. The larger rear tires enable better traction and reduced soil compaction, making it ideal for fieldwork and plowing. However, the weight distribution must be managed to prevent tipping during sharp turns or uphill maneuvers, particularly when loaded.
| Ag front | 40x5 (steel) |
| Ag rear | 56x14 (steel) |
DIMENSIONS
| Wheelbase | 93 inches/236 cm |
| Length | 158 inches/401 cm |
| Width | 76 inches/193 cm |
| Height (hood) | 62 inches/157 cm |
| Operating weight | 8450 lbs/3832 kg |
DIMENSIONS & TIRES
The Huber 21-39 Super Four tractor features a 93-inch wheelbase, providing stability and improved handling for fieldwork, while its weight of 8450 lbs allows for efficient traction in various soil conditions. The front tire size of 40x5 contributes to maneuverability, whereas the larger rear tire size of 56x14 enhances power transfer and load-bearing capacity. Overall, this combination makes it suitable for heavy-duty agricultural tasks but may pose challenges in tight spaces or on uneven terrain due to its size.
| Wheelbase | 93 inches/236 cm |
| Weight | 8450 lbs/3832 kg |
| Front tire | 40x5 |
| Rear tire | 56x14 |
BELT PULLEY
| Diameter | 15.5 inches/39 cm |
| Width | 8 inches/20 cm |
| RPM | 695 |