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Re: Air Compressor [Re: rickmg] #1301736 Tue Mar 05 2019 12:54 AM
Joined: Feb 2011
Posts: 869
R
rickmg Offline OP
Shop Shark
Update II

Reassembled the carburetor after making a gasket for it. Engine runs great. Going to go thru the air compressor next.

Rick

Re: Air Compressor [Re: rickmg] #1302523 Sun Mar 10 2019 10:53 PM
Joined: Feb 2011
Posts: 869
R
rickmg Offline OP
Shop Shark
Update III

Could only get 50 psi when running. Too many rust holes in one end of the bottom of the tank. Cut out the rusted area and welded in new steel. It has a 100 psi unloader valve. It will put out the required 100 psi and the unloader valve will maintain it at that pressure.

Rick

Re: Air Compressor [Re: rickmg] #1302531 Sun Mar 10 2019 11:45 PM
Joined: Feb 2004
Posts: 19,003
H
Hotrod Lincoln Offline
Boltergeist
You should invest in a new tank, or a good accident insurance policy. There's a reason there are certified "pressure vessel" welders. Patching on an air compressor tank ranks right up there with sewing up rips in a parachute.


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Air Compressor [Re: rickmg] #1302541 Mon Mar 11 2019 12:18 AM
Joined: Mar 2010
Posts: 8,317
5
52Carl Offline
Master Gabster
Search youtube for exploding compressor tanks if you want a reference as to what your risks are with using a patched tank. The results are not pretty.
I try to fix just about everything which is broken. Not air compressor tanks.

Re: Air Compressor [Re: rickmg] #1302545 Mon Mar 11 2019 12:33 AM
Joined: Feb 2011
Posts: 869
R
rickmg Offline OP
Shop Shark
Gents, that has been my intent to find another tank if the rest of unit was OK. Did not want to invest in a tank if the rest of the unit was junk. I find your advice very valid.

Rick

Re: Air Compressor [Re: rickmg] #1302551 Mon Mar 11 2019 01:05 AM
Joined: Feb 2004
Posts: 19,003
H
Hotrod Lincoln Offline
Boltergeist
That one test run probably used up all your luck for quite a while. Don't bother buying any Powerball tickets for a year or three!
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
Re: Air Compressor [Re: rickmg] #1302735 Tue Mar 12 2019 09:44 AM
Joined: Nov 1995
Posts: 4,161
John Milliman Offline
Founder/Developer
So Jerry ... Would welding a patch in a fuel tank be bad, too, then???

eeeek

Attached Files
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John

'49 Chevrolet 3804
'70 Boston Whaler Sakonnet w/ '84 Evinrude 90
'85 Ford F-350 "The Farm Dawg"

Re: Air Compressor [Re: rickmg] #1302761 Tue Mar 12 2019 02:08 PM
Joined: Feb 2013
Posts: 354
5
53 green 1- ton Offline
Shop Shark
I wonder who was in charge of the safety committee that day?? Possibly with the initials of ..... J.M? And he can't even say he wasn't there to witness it, he was taking the picture pix


Jim Schmidt.
Bucks County, Pa.
Pix in Photobucket
Re: Air Compressor [Re: 53 green 1- ton] #1302767 Tue Mar 12 2019 02:50 PM
Joined: Sep 2013
Posts: 815
M
moparguy Offline
Shop Shark
Originally Posted by 53 green 1- ton
I wonder who was in charge of the safety committee that day?? Possibly with the initials of ..... J.M? And he can't even say he wasn't there to witness it, he was taking the picture pix


Man, I see you can't expect a break from this crowd! My guess is the tank was full of water or more likely inert gas (not gasoline for sure). But then I'm just guessing smile

Added in edit:

Not that most would go to the trouble, but if you did want to test a pressure vessel (air tank) the safe thing to do is fill it with water and take the pressure up to 1 1/2 times the operating pressure, let it set for hour or so. Fact is I'm not really comfortable mentioning exact "how to info" since a very detailed set of steps are required as detailed in ASME specs that Mr. Google can provide. Suffice to say, if one runs enough temporary black pipe so the vessel/tank can be pressured up from a safe distance and location (this includes the montoring pressure gauge) then it's a much safer thing than just letting the air compressor do it's job while you stand there and watch. Hydrostatic (pressurized water) testing is a MUCH safer way to test when compared to pneumatic (nitrogen or air).

Last edited by moparguy; Tue Mar 12 2019 03:15 PM.

1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1951 Farmall Super A



Re: Air Compressor [Re: rickmg] #1302768 Tue Mar 12 2019 02:51 PM
Joined: Feb 2004
Posts: 19,003
H
Hotrod Lincoln Offline
Boltergeist
I've welded a bunch of fuel tanks- - - -even did a braze fix of a fuel fitting leak on top of one about half full of gas one day. The trick is to totally fill the interior of the tank with a non-flammable gas like nitrogen, CO2, or even exhaust gas from a very rich-running engine. No oxygen to support combustion- - - - -no kaboom. Pressure vessels don't have to have a fire to do damage- - - -the fracturing of the metal itself is the dangerous part.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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