Ok, just realized that you need one valve to fill, one to dump. With that, could you still use 4 valves, two per end?
Ok, just realized that you need one valve to fill, one to dump. With that, could you still use 4 valves, two per end?
Just convert an A/C compressor to be an air pump. Endless supply of 300 psi (which you can regulate down at the tank. Google it; lots of ways to do it.
The single most important thing to know about designing an airbag system is ride height of the bag itself. Air bags are sold with an advertised ride height and its important. They operate best at that height regardless of pressure. So you won't be happy with the ride quality if you get (hypothetical numbers) VW bags designed for 7.8" of height and you install them in your wagon at 5.4" of height. You can't buy a bag, stuff it in, then adjust the pressure to the ride height you want. Ride quality will be awful. You need to have a bag with an advertised height that provides the correct ride height of the vehicle.
Now, you can get bags and drop the pressure for scraping. In any airbag system, even a properly designed one, that ride quality will suck. But then when you re-inflate for normal DD, the height of the bag needs to be at its ride height to provide satisfactory performance.
singleslammer wrote: Ok, just realized that you need one valve to fill, one to dump. With that, could you still use 4 valves, two per end?
You can set the front on a single intake and exit valve. But the air will actually move side to side between the bags with no check valves installed. Plus cars historically are not exactly the same weight left to right. Again this would be very cool done up hard parked but getting it to ride right and be comfortable is a serious pain and sometimes just not doable given the parts available.
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