Nelson Engineered Performance LLC

Which option is best for your race program?

In circle track racing, performance on the track can be greatly affected by suspension components such as bump stops and bump springs. These components play a crucial role in managing the car’s balance, handling, and performance. This post offers a quick look at each option and provides a few points to consider. While certain scenarios may present advantages in using a bump stop over a bump spring, there are also situations where a bump spring may be the preferred choice. At Nelson Engineered Performance, we have the tools and knowledge to help you decide which option is best for your race team.

In oval racing, bump stops are primarily used, in conjunction with the main spring(s), to control the car’s dynamic platform. Our goal is to find our desired dynamic platform and maintain it throughout the night as track conditions change. Bump stops can better help us stay in our platform window. By limiting suspension travel, bump stops provide better control over variables like the camber curve, caster curve, and load on the wheels. Bump stops also usually have an advantage over bump springs when it comes to providing a smoother experience on rough tracks.

In addition, bump stops are a cost-effective alternative to bump springs and offer improved efficiency in compact spaces. Generally, we can achieve our target load using smaller bump stops, compared to the larger bump springs required for the same load. Bump springs often have a taller profile than bump stops, making it challenging for some cars to accommodate their height and size.

As with bump stops, bump springs prevent suspension over-travel. They are commonly used when the primary spring alone cannot fully support the car’s dynamic platform. The ideal setup ensures a smooth transition from the primary spring to the bump spring, reducing the risk of tire shock and grip loss.

Bump springs offer a wider range of rate options compared to bump stops. While a bump stop may provide a few rate choices, a bump spring provides around 20 different rates within the same size spring, ranging from 50 to 5,000 pounds. This level of versatility is unmatched by a bump stop.

At Nelson Engineered Performance, we understand the complexities of dirt racing and the importance of achieving your optimal setup. We’re equipped with the necessary tools, knowledge, and skills to guide you in making informed decisions. Whether it’s choosing between bump stops and bump springs, or fine-tuning a different aspect of your setup, we’re prepared to assist you in maximizing your performance.