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post #1 of (permalink) Old 02-27-2002, 05:10 AM Thread Starter
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Airing Up

Hi all. Quick question -- will a 2.5 gallon air tank pressurized to 120 psi air up four 30x9.5 tires? I'm asking because I've been looking at compressors (so expensive) and air tanks (so cheap). I'd rather use the tank if it'll work. Thanks.

-Surly Early [img]/wwwthreads_images/icons/mad.gif[/img] <font color=blue>'88 Samurai - Built not Bought - 99% Duct Tape free!</font color=blue>
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post #2 of (permalink) Old 02-27-2002, 06:13 AM
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Re: Airing Up

Do you have power steering?

If not, you can install a compresser system by using a Samurai AC compressor and off-the-shelf parts. It will take a few minutes to air up the tires without a tank but it works great on the trails! You can also adapt a tank system to it for better performance.

See my website for complete plans -- look at the table of contents frame on the left side.



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post #3 of (permalink) Old 02-27-2002, 06:49 AM
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Re: Airing Up

hey mr surly, being the nice guy i am n all[img]/wwwthreads_images/icons/wink.gif[/img] i rekon i could bring ya a ac compresor to zuwharrie for the right price[img]/wwwthreads_images/icons/tongue.gif[/img] ifn ya need one! ack know can give ya the specifics to do it. best i can remember, hes got a pretty good write up on it.
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post #4 of (permalink) Old 02-27-2002, 07:44 AM
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Re: Airing Up

I believe the answer to your question is no (I could be wrong, but I don't think so). The AC pump rocks, if you can hook one up. If not there are other cheep compressors out there. I picked up a GM compressor last week, a friend gave me a write up for a cheep air locker compressor. I havn't picked up all the needed parts yet so I don't know how it would work for tires. I hope to get started on it in a couple of weeks.

Gary

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post #5 of (permalink) Old 02-27-2002, 08:20 AM
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Re: Airing Up

I am far from an expert on any of this (yet) but i think I can answer a question for ya, Surly. Someone correct me if I am wrong, but I believe you could air up 4 30x9.5 tires to 24 lbs a piece with 120 lbs of air in a tank, right?

Since all you are doing is allowing pressure to equalize by letting it out of the tank into the tires, you will eventually be left with an equal amount in the tank and the last tire. 120/5 = 24.

if this answer is obvious or useless, just ignore me.

~daxe

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post #6 of (permalink) Old 02-27-2002, 08:50 AM
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Re: Airing Up

The tank has to have enough volume to fill the tires. So unless you get a rather large tank, or one of the HIGH pressure jobs you will not have enough air.

Gary

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post #7 of (permalink) Old 02-27-2002, 10:19 AM
 
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Re: Airing Up

agree with the ac compressor setup it can be quite cheap especially if you already have a compressor if not just look for a small one cheap from something else (ebay try for $10 or 15 bucks just keep tring dont pay much incase it wont fit / work)If you are a good fabricator or just lucky you can build a mount for most any small pump look at this one I can take some measurements to show size but it is way larger than the sammy one that is why it is mounted where it is that's the only place it would fit
price pump free
new clutch free
pressure switch $20 wheelers
hose mis fittings $15 hardware store
pop off valve $10 hardware store
tank had didn't use didn't need it
at an idle it will fill a 225 75 15 in about 2 min
at 2000 rpm it will fill in 30 sec
best mod so far other than the 4to 1 T case gears

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post #8 of (permalink) Old 02-27-2002, 04:32 PM Thread Starter
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Re: Airing Up

Thanks everybody. I'm sure the AC compressor mod would be "the bomb" for my Zuk, but I kinda want something portable that I can move from car to car, so I can take it with me on long trips to the beach or the mountains in my Dodge Caravan. Problem is, every portable 12volt compressor I've ever owned has turned out to be a cheap POS that I ended up throwing away.
If I could use the 2.5 gallon tank to air up to 24 psi, that would kick butt (thanks for doing the math, Daxe). More opinions are welcome -- anybody else??? Anyone...anyone...Bueller?

-Surly Early [img]/wwwthreads_images/icons/mad.gif[/img] <font color=blue>'88 Samurai - Built not Bought - 99% Duct Tape free!</font color=blue>
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post #9 of (permalink) Old 02-27-2002, 07:19 PM
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Re: Airing Up

Have you considered a co2 bottle? I use one to air up tractor tires, trailer tires, Sammy tires etc. and a filling of co2 lasts me about a year.

aka "papa"
post #10 of (permalink) Old 02-27-2002, 08:04 PM
 
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Re: Airing Up

I have been wanting to try to buid a portable electric compressor using a ac pump and a starter motor have had mixed imput on the starter motor part but figure at most I will waste some time and a old starter motor

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