WHAT IS OLEO-PNEUMATIC TECHNOLOGY?
Let’s start by breaking down the word oleo-pneumatic.
Oleo means "oil", and pneumatic means "containing air or gas under pressure."
Oleo-pneumatic technology was originally developed way back in 1915 to cope with the serious kickback of a machine gun. The idea was to absorb those rapid and repetitive shocks that would occur while firing over and over.
Fast forward to the 1930s. Oleo-pneumatic technology started making waves in French aviation and was adopted across the aviation industry for fixed undercarriages.
The tech has come a long way since the early 1900s, but it's still the go-to solution when you're dealing with a heavy load and lots of oscillations in the terrain.
And by the way, almost every commercial and governmental aircraft still uses oleo struts in their landing gears. It's a rock-solid technology that has stood the test of time.
HOW DO OLEO-PNEUMATIC SUSPENSIONS WORK?
Nimbus oleo-pneumatic suspensions absorb and dissipate shock loads using a combination of hydraulic fluid (oil) and gas (nitrogen) inside the chamber.
The gas functions as a spring. It is compressed by the oil to absorb the impact of bumps.
The oil is directed through spring-loaded flaps and orifices to allow for different responses from the shock based on your desired driving settings. Increasing or decreasing the pressure adjusts the spring rate.
The oil, therefore, restricted by the flaps and orifices, acts to dampen the movement of the piston assembly during shock absorption and recoil.
WHAT ABOUT SPRINGS?
Instead of having a regular helicoidal spring — a mainstream metal spring with a constant spring rate — we’ve replaced it with a pneumatic spring, compressed gas contained inside the tube that mixes with the oil to absorb and dissipate shocks.
FEEL THE DIFFERENCE
It's easy to feel the benefits of oleo-pneumatic technology versus more conventional suspensions.
We chose the name Nimbus because driving a vehicle equipped with our suspensions feels like floating on a cloud.
The “flying carpet effect” comes from the fact that air and oil compression are progressive — not linear, like metal shock absorbers.
Small bumps generate a soft quick response, almost annihilating them, where big bumps get a much stronger response, knowing that it’s virtually impossible for them to bottom out.
BENEFITS OF OLEO-PNEUMATIC SUSPENSIONS
Air functions as a cushion, delivering extraordinary comfort — like driving on a cloud. With oleo-pneumatic technology, road bumps or gravel become imperceptible as they are effectively absorbed by the air.
IMPROVED GRIP & TRACTION
Nimbus provides exceptional grip and traction by incorporating softer damping during compression-damping transitional phases. This results in efficient filtering and significant dampening of minor road imperfections.
Air provides a progressive absorption curve, with heightened sensitivity at the beginning of the stroke (providing a cushion-like effect), and gradually becoming firmer the more you push.
The air pressure can be adjusted at any point to accommodate a greater load or specific driving requirements/ preferences, all while ensuring optimal comfort and performance remain unaffected.
NO BOTTOMING OUT
Using air improves the curve of absorption. Conventional metal spring shocks have a constant (linear) curve, while oleo-pneumatic shocks are more adaptive. Our progressive curve ends in a straight line, meaning you won’t bottom out.
With Nimbus, you’ll experience significant weight savings compared to conventional suspensions. Using the highest grade aluminum allows us to cut down weight while retaining an exceptionally strong structure.