Cutting a propane tank

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hurleyjd
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Re: Cutting a propane tank

Post by hurleyjd » Fri Mar 20, 2020 6:08 pm

I have never cut into a tank before. But I have read and heard that you can pipe the exhaust from and engine in the tnpk for several hours and then cut. What you are trying to do is rid the tank of oxygen.



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Re: Cutting a propane tank

Post by Redgully » Fri Mar 20, 2020 7:20 pm

hurleyjd wrote:
Fri Mar 20, 2020 6:08 pm
I have never cut into a tank before. But I have read and heard that you can pipe the exhaust from and engine in the tnpk for several hours and then cut. What you are trying to do is rid the tank of oxygen.
I've done one tank and that is how i did it, felt bloody scared making that first cut. Got a friend who had a petrol tank with a leak, filled it full with petrol and welded it up. Said he's done a few like that and safe. Half full or empty unsafe. I wouldn't be within a mile of someone doing that!

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Re: Cutting a propane tank

Post by greggy » Sat Mar 21, 2020 6:13 am

Supposed to wash it out if your talking about gasoline...or lpg.....

If you can smell anything, do not cut or weld, if cutting with grinder, easy to do when it has water .... or an inert gas....

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Re: Cutting a propane tank

Post by BRYANT » Sat Mar 21, 2020 10:00 am

hurleyjd wrote:
Fri Mar 20, 2020 6:08 pm
I have never cut into a tank before. But I have read and heard that you can pipe the exhaust from and engine in the tnpk for several hours and then cut. What you are trying to do is rid the tank of oxygen.
Wont work with these autos that has emission control systems
Needs to be steamed or seal an pump nitrogen and check with an oxygen meter and cut only when there is no oxygen. Good way to get hurt or killed if you don't know what you are doing.
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Re: Cutting a propane tank

Post by Caustic Burno » Sat Mar 21, 2020 10:19 am

BRYANT wrote:
Sat Mar 21, 2020 10:00 am
hurleyjd wrote:
Fri Mar 20, 2020 6:08 pm
I have never cut into a tank before. But I have read and heard that you can pipe the exhaust from and engine in the tnpk for several hours and then cut. What you are trying to do is rid the tank of oxygen.
Wont work with these autos that has emission control systems
Needs to be steamed or seal an pump nitrogen and check with an oxygen meter and cut only when there is no oxygen. Good way to get hurt or killed if you don't know what you are doing.
Vehicle produce nitrous oxides that fills the oxygen side of the fire triangle nicely. At 600 degrees NOX decomposes to nitrogen and oxygen. Your catalytic converters are supposed to convert NOX. So you’re trusting your life to the efficiency of your converter.
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Re: Cutting a propane tank

Post by callmefence » Sat Mar 21, 2020 10:56 am

I don't see how some of y'all ever get anything done. My guess is you don't.
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Re: Cutting a propane tank

Post by TennesseeTuxedo » Sat Mar 21, 2020 11:14 am

callmefence wrote:
Sat Mar 21, 2020 10:56 am
I don't see how some of y'all ever get anything done. My guess is you don't.
Guilty as charged.
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Re: Cutting a propane tank

Post by 1982vett » Sat Mar 21, 2020 11:19 am

Brute 23 wrote:
Fri Mar 20, 2020 5:25 pm
callmefence wrote:
Fri Mar 20, 2020 3:49 pm
Unbelievable...one more try with a 7' cheater and it broke loose. ... heard brute was on the case and gave up I reckon....
Image
I was about to say shoot that sucker LoL
A video of that may have been entertaining.... :D

Hey, put it back together and shoot it. :nod:
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Re: Cutting a propane tank

Post by callmefence » Sat Mar 21, 2020 11:23 am

1982vett wrote:
Sat Mar 21, 2020 11:19 am
Brute 23 wrote:
Fri Mar 20, 2020 5:25 pm
callmefence wrote:
Fri Mar 20, 2020 3:49 pm
Unbelievable...one more try with a 7' cheater and it broke loose. ... heard brute was on the case and gave up I reckon....
Image
I was about to say shoot that sucker LoL
A video of that may have been entertaining.... :D

Hey, put it back together and shoot it. :nod:
I was gonna have tux drop a match in there when he comes for coffee in the morning.
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Re: Cutting a propane tank

Post by Caustic Burno » Sat Mar 21, 2020 12:10 pm

TennesseeTuxedo wrote:
Sat Mar 21, 2020 11:14 am
callmefence wrote:
Sat Mar 21, 2020 10:56 am
I don't see how some of y'all ever get anything done. My guess is you don't.
Guilty as charged.
If hunting and fishing don’t count guilty as well.
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Re: Cutting a propane tank

Post by Nesikep » Sat Mar 21, 2020 1:41 pm

exhaust from a diesel is no good, they're a lean burn engine so they have lots of O2 in the exhaust unless under heavy load

Exhaust from a quad or something works well, set the carb to run a touch richer than usual will eliminate the O2 nicely
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Re: Cutting a propane tank

Post by Redgully » Sat Mar 21, 2020 8:35 pm

Nesikep wrote:
Sat Mar 21, 2020 1:41 pm
exhaust from a diesel is no good, they're a lean burn engine so they have lots of O2 in the exhaust unless under heavy load

Exhaust from a quad or something works well, set the carb to run a touch richer than usual will eliminate the O2 nicely
The time i did it i used a vintage two stroke villiers, they have to be the most polluting engine ever built! A mosquito wont last within ten meters of one of those running.

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Re: Cutting a propane tank

Post by BFE » Thu Mar 26, 2020 6:12 am

Before he passed away, my uncle cut hundreds of LP tanks. He bought and sold them for scrap, made feeders from them, etc. He started out filling with water, but got away from that and used exhaust for a few hours prior to cutting. Cancer got him, not an explosion.

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