I'm daydreaming about a toy hauler project and had an idea that may be unique, but certainly interesting. The toy I want to haul is a racecar which is quite low. Getting it into the back of a bus will take some doing, either removing the bumper, dropping the tail of the bus, like this
, obscenely long ramps, or all of the above.
Some buses with air suspension have a kneeling capability to make for easier entry of passengers and/or a load leveling capability. Is there a way to tap into this system to control it, either with new programming, or just forcing each corner to do what you want? Instead of dropping just the front, you could drop the rear and raise the front to make the bus squat, lowering the tail of the bus. Just a 1" change in the front and rear heights translates to over 2" of drop in the rear (obviously this depends on the length of the particular bus). That could be pretty helpful right there. If you went all the way to the end of the travel at each end, it could be quite a difference. Anybody know the typical available droop and compression available in the front and rear?
Side question, what would repeatedly cycling the system to the ends of the range of travel do to the long term durability of the shocks and air bags? It can't be good, but how bad is it?
Aside from using this to squat the bus, if you had individual control you could level the bus when stationary, like an RV leveling system. A capability I'd like anyway since I'd like to turn the center section of the bus into a camper.
Thoughts? This doesn't seem complicated, and may have been done before. How common are used buses with air suspension anyway?