Are Air Suspension Motor Homes Dangerous
I started a repair business in 1965, retired and sold in 2002. I have not repaired a motor home air suspension system since but at that time considered them to be unsafe. I hope that motor home compan...
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Actually, having a three-valve setup with the front end coupled means both front tires will be evenly loaded at all times (up until suspension limits are reached) and all roll-stiffness is provided by the rear-axle and the rear tires take those loads. That is assuming only the front air-springs are coupled, and none of the other mechanical components.
In reality however, the front springs are probably coupled by a sway-bar, or in the newest high-end coaches they use hydraulic accumulators with PWM valves to have semi-active roll-control. These systems will return some of roll-moments to the front axle, however it wouldn't be any different than a conventional steel-sprung front axle.
The more likely cause for tire blow-outs on larger coaches is simply tire overloading. Some of the bigger coaches exceed even federal highway bridge-formula limits.
In reality however, the front springs are probably coupled by a sway-bar, or in the newest high-end coaches they use hydraulic accumulators with PWM valves to have semi-active roll-control. These systems will return some of roll-moments to the front axle, however it wouldn't be any different than a conventional steel-sprung front axle.
The more likely cause for tire blow-outs on larger coaches is simply tire overloading. Some of the bigger coaches exceed even federal highway bridge-formula limits.
