Volume of air per bag/air storage? How do you measure air gallons? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bagged72blaz · 01-08-2005, 02:02 AM

Ok I'm going to be redoing my air set-up soon. Want to get the 5 gal tank out of the inside of my blazer. Put everything under body. Build custom 4" round tanks. I know that you measure air gals, different than liquid gals.

What is the formula? How long would I need to make a 4" pipe to get 3 gals?

I'm wanting 3 gals per bag, 4 tanks total, each tank as close to the bag as possible. I'm going to mount the front valves on top of the frame rail inside the engine compartment so they don't freeze up. The rear valves I'm going to put inside in the bed area with the dump routed out side. Or maybe close to the exhaust(not to close!)

I'm going to add another compressor. Any recommendations? Need 100% duty, sealed, as I'm going to mount inbetween frame rails. Thoughts

bagged74 · 01-08-2005, 03:02 AM

I thought a gallon was a gallon, no matter what you were measuring.

*Shane* · 01-08-2005, 03:51 AM

Volume of a Hollow Cylinder in Cubic Inches:

V=3.1416ht(D-t)

V=volume-------------------(3 gallons)
h=height/length of cylinder---(dunno ... that's what we are solving)
t=wall thickness-------------(you got to tell us this)
D=O.D.----------------------(4 inches)

Now convert Cubic Inches to U.S. gallons:

231 cubic inches = 1 U.S. gallon

693 cubic inches = 3 U.S. gallons = Volume

Now solve for h

Hope this helps.

SCOTI · 01-08-2005, 11:10 AM

I don't think there is a difference of air vs. liquid as far as packaging size is concerned. A 5gal container for air, would be a 5gal container for water. The big difference would be the density of each substance & how much you could pressurize each within that container.

Shev · 01-08-2005, 02:10 PM

Man I hope you know what you are doing making your own tanks. Here's one guys way of making his own tanks (link) Just realize you are making a potential bomb which could hurt you and others. They do make 1, 2 and 3 gallon tanks, I know I guy who had 4-2 gallon tanks hidden in the compartments in the back of his '97 S-10 Blazer. I'm just suprised you can't fit small tanks on the side of the frame without fabbing your own.

bagged72blaz · 01-08-2005, 03:54 PM

I build air headers for the mine contractors I work for, and have been welding for more than 14 years. The only thing I'm good at blowing up is my motor!

Thanks Shane that helps. The pipe I'm using is 4" ID I'll take pictures when I'm done. The reason I ask about gals in air is my tank says 5 gal, but it's muck smaller than a 5 gal bucket.

Slammed67 · 01-08-2005, 07:12 PM

Hey, don't mean to change the subject, but didn't you used to go by the screen name "Reumster"?

bagged72blaz · 01-09-2005, 01:41 AM

Yes. How's it going? I lost my old e-mail, and forgot my password. Unable to retreave my old user name. I'd like to get my old account back.

I figured 4" X 55"(sort of long) would give me 3 gals. 6" X 2' 3 gals

What about the best place to get compressors Godfathers has 450 Viair for 200.00

Rollie396 · 01-09-2005, 08:52 PM

just out of curiosity,what schedule of pipe are you goin with?That and are you gonna use heads on the ends or attempt flat caps?

bagged72blaz · 01-10-2005, 03:10 PM

schedule 80 1/4" thick. What I do is cut disks 1/4" thick to the ID of pipe, then cut out holes in the end caps for couplings. Then weld the couplings in on both sides. then sink the end caps into pipe 1/2" to get a good weld. Thats it. But here's my question what can I pour into the tank to seal against rust.

Fat Tom · 01-13-2005, 02:11 AM

Once you get it all welded up, I would pour some tremclad into the tank and roll it around real good to ensure good coverage, then pour out whatever is left. That would be my redneck way of sealing it.

bagged72blaz · 01-13-2005, 03:21 PM

What's tremclad?

Fat Tom · 01-13-2005, 11:41 PM

Hmmm... must be a canadian brand, its a rust resistant outdoor paint for metal. A good thick coat of it lasts for years. There must be something similar down there.

Rollie396 · 01-14-2005, 10:35 PM

I believe I've heard southernors talk of Rustoleum?I think that would be the equivalent.

01-08-2005, 02:02 AM	#1
bagged72blaz Got L.E.D.s Join Date: Dec 2004 Location: Craig Co. Posts: 195	Volume of air per bag/air storage? How do you measure air gallons? Ok I'm going to be redoing my air set-up soon. Want to get the 5 gal tank out of the inside of my blazer. Put everything under body. Build custom 4" round tanks. I know that you measure air gals, different than liquid gals. What is the formula? How long would I need to make a 4" pipe to get 3 gals? I'm wanting 3 gals per bag, 4 tanks total, each tank as close to the bag as possible. I'm going to mount the front valves on top of the frame rail inside the engine compartment so they don't freeze up. The rear valves I'm going to put inside in the bed area with the dump routed out side. Or maybe close to the exhaust(not to close!) I'm going to add another compressor. Any recommendations? Need 100% duty, sealed, as I'm going to mount inbetween frame rails. Thoughts __________________ Bagged 1972 2wd Blazer http://www.earlyclassic.com/home.aspx

01-08-2005, 03:51 AM	#3
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Volume of a Hollow Cylinder in Cubic Inches: *V=3.1416ht(D-t)* V=volume-------------------(3 gallons) h=height/length of cylinder---(dunno ... that's what we are solving) t=wall thickness-------------(you got to tell us this) D=O.D.----------------------(4 inches) Now convert Cubic Inches to U.S. gallons: 231 cubic inches = 1 U.S. gallon 693 cubic inches = 3 U.S. gallons = Volume Now solve for h Hope this helps. Last edited by Shane; 01-08-2005 at 10:37 AM.

01-08-2005, 11:10 AM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,984	I don't think there is a difference of air vs. liquid as far as packaging size is concerned. A 5gal container for air, would be a 5gal container for water. The big difference would be the density of each substance & how much you could pressurize each within that container. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

01-08-2005, 02:10 PM	#5
Shev Head Peon Join Date: Dec 1999 Location: Imlay City MI Posts: 296	Man I hope you know what you are doing making your own tanks. Here's one guys way of making his own tanks (link) Just realize you are making a potential bomb which could hurt you and others. They do make 1, 2 and 3 gallon tanks, I know I guy who had 4-2 gallon tanks hidden in the compartments in the back of his '97 S-10 Blazer. I'm just suprised you can't fit small tanks on the side of the frame without fabbing your own. __________________ '72 Suburban, factory tilt, tach, front & rear AC, front & rear disc brakes, 383/700-R4

01-08-2005, 03:54 PM	#6
bagged72blaz Got L.E.D.s Join Date: Dec 2004 Location: Craig Co. Posts: 195	I build air headers for the mine contractors I work for, and have been welding for more than 14 years. The only thing I'm good at blowing up is my motor! Thanks Shane that helps. The pipe I'm using is 4" ID I'll take pictures when I'm done. The reason I ask about gals in air is my tank says 5 gal, but it's muck smaller than a 5 gal bucket. __________________ Bagged 1972 2wd Blazer http://www.earlyclassic.com/home.aspx

01-08-2005, 03:02 AM	#2
bagged74 its just $$$$$ Join Date: Jul 2003 Location: OK Posts: 2,078	I thought a gallon was a gallon, no matter what you were measuring.

01-08-2005, 07:12 PM	#7
Slammed67 Progress = 0% Join Date: Nov 2001 Location: Kansas City, MO Posts: 2,108	Hey, don't mean to change the subject, but didn't you used to go by the screen name "Reumster"? __________________ Jason - '67 GMC swb \| '57 Bel-Air 4dr hardtop \| '56 210 4dr Wagon \| 2000 GMC Sierra

01-09-2005, 01:41 AM	#8
bagged72blaz Got L.E.D.s Join Date: Dec 2004 Location: Craig Co. Posts: 195	Yes. How's it going? I lost my old e-mail, and forgot my password. Unable to retreave my old user name. I'd like to get my old account back. I figured 4" X 55"(sort of long) would give me 3 gals. 6" X 2' 3 gals What about the best place to get compressors Godfathers has 450 Viair for 200.00 __________________ Bagged 1972 2wd Blazer http://www.earlyclassic.com/home.aspx

01-09-2005, 08:52 PM	#9
Rollie396 someday it will be done! Join Date: Sep 2004 Location: Lloydminster,AB. Canada Posts: 1,620	just out of curiosity,what schedule of pipe are you goin with?That and are you gonna use heads on the ends or attempt flat caps? __________________ '72 C-10 Proud owner of a million new and used pieces that used to be and will once again be(god willing) a testament to the term "they don't build em like that anymore. '80 LWB 2wd beater '67 GMC long fleet (cab donor) '66 long step (parked till it's turn comes around) '65 short step (parts truck that will donate it's bed and possibly frame to the '66) '06 Grand Prix wife's car (she hardly lets me touch it) my pics

01-10-2005, 03:10 PM	#10
bagged72blaz Got L.E.D.s Join Date: Dec 2004 Location: Craig Co. Posts: 195	schedule 80 1/4" thick. What I do is cut disks 1/4" thick to the ID of pipe, then cut out holes in the end caps for couplings. Then weld the couplings in on both sides. then sink the end caps into pipe 1/2" to get a good weld. Thats it. But here's my question what can I pour into the tank to seal against rust. __________________ Bagged 1972 2wd Blazer http://www.earlyclassic.com/home.aspx

01-13-2005, 02:11 AM	#11
Fat Tom Registered User Join Date: May 2004 Location: Maple Ridge, B.C., Canada Posts: 42	Once you get it all welded up, I would pour some tremclad into the tank and roll it around real good to ensure good coverage, then pour out whatever is left. That would be my redneck way of sealing it. __________________ 69 GMC 2wd 350cid 82 Toyota 4wd, 3.8L V6, 6" lift, 35's, locked and loaded 76 Datsun F10 1.4L *FOR SALE* 04 Honda Shadow 750

01-13-2005, 03:21 PM	#12
bagged72blaz Got L.E.D.s Join Date: Dec 2004 Location: Craig Co. Posts: 195	What's tremclad? __________________ Bagged 1972 2wd Blazer http://www.earlyclassic.com/home.aspx

01-13-2005, 11:41 PM	#13
Fat Tom Registered User Join Date: May 2004 Location: Maple Ridge, B.C., Canada Posts: 42	Hmmm... must be a canadian brand, its a rust resistant outdoor paint for metal. A good thick coat of it lasts for years. There must be something similar down there. __________________ 69 GMC 2wd 350cid 82 Toyota 4wd, 3.8L V6, 6" lift, 35's, locked and loaded 76 Datsun F10 1.4L *FOR SALE* 04 Honda Shadow 750

01-14-2005, 10:35 PM	#14
Rollie396 someday it will be done! Join Date: Sep 2004 Location: Lloydminster,AB. Canada Posts: 1,620	I believe I've heard southernors talk of Rustoleum?I think that would be the equivalent. __________________ '72 C-10 Proud owner of a million new and used pieces that used to be and will once again be(god willing) a testament to the term "they don't build em like that anymore. '80 LWB 2wd beater '67 GMC long fleet (cab donor) '66 long step (parked till it's turn comes around) '65 short step (parts truck that will donate it's bed and possibly frame to the '66) '06 Grand Prix wife's car (she hardly lets me touch it) my pics



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