[77newell]

Question (my engineering mind is curious - I don't have slides) : Unless the rubber of the seals is somewhat porous I don't understand why these systems are so prone to leaking down. Given that one of the slide's seals stays inflated I doubt the seals are a problem other than when they have a pinhole or other puncture. The rest of the system is "just" mechanical and should not be leaking at all (again my engineering mind of perfection).

Usage of air for doors and toilets is reasonable. Adding compressors to deal with leaks would bother me. I would rather hunt down the leaks and keep the system as simple as possible (KISS - another engineering concept that can cause me to spend way too much time under my coach). One of the difficulties we have in dealing with these complex air systems is the lack of a comprehensive system schematic. Trying to figure out how the system is configured while trying to solve a problem is really time consuming. I use the hand drawn schematics of parts of my 93 coach's air system regularly when air consumption rises, it took many hours to put together but has saved me lots of time in locating leaks. I went from the 120v compressor running at least a couple times an hour to twice a day by persistently chasing down leaks. I will consider my efforts a success only when the compressor never needs to run unless I use the air doors (I think that is called compulsive mental illness, or is it obsessive mental illness, probably both).

Perhaps at this summer's Guru gathering a joint effort could produce a series of schematics showing the evolution of the air system. Those would be really useful for troubleshooting leaks. I would be glad to help with that if I'm there, but I'm helping a son make a move cross-country and don't yet know the schedule of his need for me.