7500 lb Rated Bags
Airlift has a new 7" airbag system for pickup trucks with a 7500 lb load rating at 100 psi. I wonder if these would have more or less bounce than the smaller 5000 lb rated bags available. I'm not affi...
Forum Discussion
HMS Beagle wrote:
The spring rate of an air spring is proportional only to the height of the spring, and independent of the diameter. That may seem non-intuitive, but it is true. So unless they are taller than their 5000 product, the spring rate will be the same, and the "bounce" will be the same.
7500lb. bags at the same PSI as the 5000lb. bags are going to have a higher spring rate. To get the same spring rate in a larger diameter bag, you won't need as much pressure, which will lower the spring frequency, FWIW.
Personally, I've never noticed the dreaded bounce with airbags and good shocks.
