Originally Posted by ThePowells
One thing I haven't seen mentioned anywhere is about the DP chassis owners tapping into the air system on their chassis and using that for pumping tires and other maintenance.
Chassis air systems cycle between a bit less then 100 psi and up to 120 psi.
So attempting to put 110 psi in a tire is an adventure. As you draw down the air it flows out of the tire until 100 psi. Then it pumps to 120 and you get some air back in, but not before the system drops below 110 psi again.
Owners have tricked the system to only add air when the system is at max pressure, stop filling and bleed off the system, to build again, and then add some more. Nothing better then a 1/2 million $ tire pump.