why do tractors have large rear wheels

Tractors are important agricultural equipment used for plowing, tilling, harvesting and other farming activities. They have been around for over a century and have undergone significant innovations over the years. One of the distinctive features of tractors is their large rear wheels. Have you ever wondered why tractors have these large wheels? In this article, we will explore the reasons why tractors are designed with large rear wheels.

The Basics of Tractor Traction

Traction is the ability of the tractor to move forward without slipping. It is critical for farming activities in fields where the soil is often loose and uneven. Tractors need good traction to perform effectively. Traction is affected by various factors such as weight, friction, and the type of terrain. The larger the surface area in contact with the ground, the more traction a tractor can achieve. This is because the larger area puts more pressure on the ground which increases the friction.

Increased Traction with Large Rear Wheels

One of the main reasons why tractors have large rear wheels is to increase traction. Tractor rear wheels are usually filled with fluid, and their large size provides a wider surface area in contact with the ground, increasing the weight and friction, which results in improved traction. The larger the rear wheels, the more weight and friction they create, making it easier for the tractor to move through soft or slippery terrain. This increased traction is especially crucial during heavy tillage and plowing activities when tractors need to tow heavy equipment and carry out high torque workloads.

Stability and Manoeuvrability

Large rear wheels also provide better stability and manoeuvrability for the tractor. The weight of the tractor is focused towards the rear, which reduces the possibility of tipping, making it easier to navigate through steep and uneven terrain. Large rear wheels also enable the tractor's turning radius to be wider, making it easier to navigate through tight spaces like farm yards and fields where there is limited maneuvering space.

Reduced Soil Compaction

Another advantage of large rear wheels for tractors is reduced soil compaction. Soil compaction can reduce crop yield and damage the soil structure, making it less fertile for future farming activities. By having larger rear wheels, the weight of the tractor is more evenly distributed, reducing the pressure on any one area. This results in less soil compaction, which can ultimately improve crop yields.

Conclusion

In conclusion, tractors have large rear wheels for various reasons, including increased traction, stability, maneuverability, and reducing soil compaction. These factors make tractors more effective and efficient, especially in large-scale farming. With the ever-increasing demand for food production, tractors with large rear wheels will continue to play a crucial role in feeding the world's growing population.