An endless air system is simple and reliable. I'd much rather leave the 12v compressor to run the lockers. I have a 18 litre air tank aswell. Not upto the endless just yet. But will definitely go that way.
I run the ckma12. And 4x35's from 12 to 35psi takes forever and it gets so hot it melts the hose. The ckma12twin is comparable to the endless air - but it's HUGE. I like simplicity.
I have a big York on my 350 chevy in my Piggy. Very familiar with the performance. My Puma in the 80 series will fill up a 315 tire from 15 to 35 psi in about 2 minutes, 15 seconds. I don't really think that is very slow. About a dozen of us in the local CSC club are running them, and nobody has had a problem with them yet, after several years of use. Some of us make 30-40 days of wheeling per year, so that is a lot of tires to pump up. John
Thats a photo of my endless air setup. I made the bracket myself.
Do you recall what type of vehicle that new tensioner pulley was off?