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Old 12-31-2012, 10:22 AM   #1
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Trail compressors.

I've seen lots of threads and posts on the tpoic of portable air compressors, intended for RE-airing tires after down-airing them for trailwork.

I recently discovered this Ryobi 18v portable compressor which looks pretty cool. Seems like most of my world revolves around these 18v ryobi battery packs (wait...that sounded WAY wrong) I have a lot of Ryobi tools.



Another thing to ponder when picking a pumper is CFM (Cubic feet per minute). Since we arent looking for high pressure...we want volume. We arent putting 100psi in our tires, so we dont give a shart if the compressor is good for 175psi. We are, however, filling up big bouncy things (thems be the tars, me-mateys)...big tars...lots of volume to fill...more CFM is better than more PSI.

Most portable compressors use tiny little pistons to "compress" the air (push it). We've all "heard" that everything takes longer with tiny pistons. (Gigidy) Larger pistons will compress more air per push....thus more CFM. Just like an internal combustion engine...without the combustion part. Bigger pistons...more air. So look for high CFM if ya wanna get re-aired quickly.

Another handy goody is a tank or reservoir for the compressed air to be stored in. For example...if ya have a compressor that pumps 10 cubic feet per minute....pushing air into a storage tank. And you connect a hose to the tank that lets you have 50 CFM...youre gonna fill up 5 times faster. Until the tank is empty cuz the pump cant keep up.

But the beauty to that is....the compressor keeps filling the tank while you are switching to the next tire. So...you plug her in and let it start compressing while you retrieve your beverage. As it fills the tank, you move to the first tire...fill the first tire and the pressure in the tank depleats....but as you move to tire #2 the compressor is still filling the tank so that when you start on #2 the tank is almost full again. then this pneumatic dran and refill process continues as you work your way around the vehicle and work your way through your refreshing beverage.
A variety of types available like this:


Then there is also "on board air" there the compressor and/or air storage tank is actually mounted to the jeep itself. This is a very cool option but offers less flexibility for other uses. And since I am a "leatherman / swiss-army-knife" many jobs with one tool kind of guy...I prefer things with multiple uses.

I know this is UBER-basic stuff. But there are some folks out here (like me) who are just stumbling upon these obvious facets of wheeling. Figured I might share some of my "Ah-Ha!" moments.



Happy trails, all.

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Old 12-31-2012, 04:23 PM   #2
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Hey man if it works, that's great! Im starting some research on OBA myself at the moment.
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