| Manufacturer | M-R-S |
| Price | - |
| Model | A-90 |
| Equipment Type | Four-wheel Drive 4WD Tractors |
| Factory | Flora, Mississippi, USA |
M-R-S A-90 POWER
| Engine | 123 hp/91.7 kW |
| Drawbar (claimed) | 90 hp/67.1 kW |
ENGINE DETAIL
The M-R-S A-90 tractor features a Cummins JN-130-CI diesel engine, providing a robust 123 hp at a relatively low rated RPM of 2200, ideal for heavy-duty agricultural tasks. With a displacement of 401 ci (6.6 L) and a bore/stroke ratio of 4.125x5.00 inches, it offers optimal torque and fuel efficiency, although the design may yield challenges in terms of weight management on less stable terrain. Additionally, the electric starter enhances reliability, making it suitable for diverse operational environments.
| Description | Cummins JN-130-CI/diesel/6-cylinder/liquid-cooled |
| Displacement | 401 ci/6.6 L |
| Bore/Stroke | 4.125x5.00 inches/105 x 127 mm |
| Power | 123 hp/91.7 kW |
| Rated RPM | 2200 |
| Starter type | electric |
M-R-S A-90 ENGINE
The M-R-S A-90 tractor is powered by a robust 6.6L Cummins 6-cylinder diesel engine, providing strong torque and fuel efficiency for heavy-duty applications. Key advantages include its durability, reliability, and lower operational costs, making it ideal for farming and construction tasks. However, operators should consider potential challenges such as weight management and maintenance of the diesel system in variable climatic conditions.
| Description | Cummins 6.6L 6-cyl diesel |
TRANSMISSION
The M-R-S A-90 tractor features an advanced 10-forward and 2-reverse gear transmission system, allowing for enhanced maneuverability and adaptability in various terrains. This configuration is advantageous for agricultural tasks, providing optimal speed control for plowing and hauling. However, the complexity of the gear setup might require skilled operation for maximizing efficiency in challenging conditions.
| Gears | 10 forward and 2 reverse |
MECHANICAL
The M-R-S A-90 tractor features a robust 4x4 4WD chassis which enhances stability and traction on uneven terrain, making it suitable for diverse agricultural applications. Its 10-speed transmission allows for precise speed control, facilitating efficient operation in various field conditions. However, the open operator station may expose the driver to the elements, which could be a disadvantage in adverse weather scenarios.
| Chassis | 4x4 4WD |
| Steering | power four-wheel |
| Cab | Open operator station. |
| Transmission | 10-speed |
M-R-S A-90 TIRES
The M-R-S A-90 tractor is equipped with standard agricultural tires, 18.4x26, on both front and rear axles, which provide substantial flotation and traction, ideal for varied soil conditions. However, the uniform tire size may limit its versatility in certain terrains, potentially affecting stability during tasks requiring heavy lifting or maneuverability. It is well-suited for moderate agricultural applications, but operators in hilly or uneven fields should consider additional tire options for improved performance.
| Ag front | 18.4x26 |
| Ag rear | 18.4x26 |
DIMENSIONS
| Wheelbase | 100 inches/254 cm |
| Height | 114 inches/289 cm |
| Weight | 24000 lbs/10886 kg |
| Ground clearance | 16 inches/40 cm |
| Front tread | 75 inches/190 cm |
| Rear tread | 75 inches/190 cm |
DIMENSIONS & TIRES
The M-R-S A-90 tractor has a wheelbase of 100 inches, providing stability and improved handling on uneven terrain, but may limit maneuverability in tighter spaces. Weighing 24,000 lbs, this robust design enhances traction and reduces ground pressure, making it advantageous for heavy-duty applications, though it may impact fuel efficiency. The uniform tire size (18.4x26) aids in maintaining consistent performance and load distribution, essential for optimal efficiency in agricultural or construction tasks.
| Wheelbase | 100 inches/254 cm |
| Weight | 24000 lbs/10886 kg |
| Front tire | 18.4x26 |
| Rear tire | 18.4x26 |