Originally Posted by pmd
I've been looking at air compressor options.
I've used a buddies portable compressor that connected directly to the battery terminals - it seemed to work well - but would be a pain to use in the D90.
I am looking for a quality plug in (cig lighter) type.
or maybe even go for an onboard type.
I'd prefer not to go the CO2 route.
Looks like there are a ton cheap import products out there - I'd like to buy quality or one that has a proven track record.
So what are folks using?
The trouble is that any air compressor that is going to be of high quality, decent duty cycle and move a decent amount of air volume is going to be fairly large, heavy and draw too much current to be plugged into a cigarette lighter. Keep in mind that the VOLUME of air the compressor moves at specified pressures is much more important that the max pressure rating, whether it be for inflating tires or running pneumatic tools. If you want something truly portable, this is about the best compressor set-up I have seen, but again, it uses jumper cable clips to attach to the battery (though you could replace with a high capacity plug like portable winch systems use)…
-- It moves 1.1 cfm at 75 PSI, and draws a max of 30 amps, and weighs 34 lbs, it is pretty well built. It also comes "bundled" in a sturdy wood box with a pressure switch, pressure relief valve, activation solenoid and air filter, and power cables, making it a true ready to go package. If you go with the onboard version, it is the same set-up, but mounted on a nice strudy steel plate making it pretty easy to bolt in and go.
I use this compressor mounted onboard, and it does a pretty respectable job given its size (I've attached a photo of it mounted with dual optima's in the Driver's side battery box below, nothing is connected because the photo was during the "mock-up" phase).
There are much more formidable electric onboard compressors now from Oasis (http://www.oasisoffroad.com/products.html
) and others that rival some engine driven compressors, but they draw some serious amperage, and require considerably more space than the Ready Air (though you benefit in much greater performance).
If you don’t have A/C, or don’t use you’re A/C you could always go with an engine driven York or Saden (sp?) style air compressor (or convert an A/C compressor for use as an air compressor). This is by far the most robust and best performing option, but you asked about portables, right? Getting a bit off topic here..
If you are looking for a solid portable solution, the Ready Air is pretty hard to beat (at least from what I have seen). Stay away from the cigarette lighter plug compressors, they will just frustrate you and die early deaths…