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250 Gallon Reverse Flow Build

post #1 of 3
Thread Starter 

Hi,

 

So last winter i came across a 250 gallon propane tank that i was able to acquire for for $60! the plugs and gages had already been removed and little smell remained. This summer i filled the tank with water and let it sit for a week to make sure it was safe to cut and finally this week I've gotten around to begin working on it. I began with making a cut to accept the firebox, i started using a cut off blade on my angle grinder and then quickly switched over to my OA torch to get it done. the cut is 24 inches across and 8 inches tall. I did this before using the Feldons calculator but from what I'm coming up with now its actually pretty close to what i need it appears. So... i ran the calculator to get my firebox size required and decided im going with 28x28x28 that comes out to 114% so i reran it based on reading peoples comments about how it uses that to figure the chimney and air vents to get the actual specs for that. Based on the attached photos can someone tell me if i did this right? I do live in NW Ohio so i am going to insulate the firebox so it can be used in colder weather without consuming so much wood!

 

Here is the planned firebox size

 

 

And here is the modified specs based on a 100% size firebox

 

 

 

So my chimney with be done with 6" with a length of 39 inches? or am i misunderstanding how this works?

post #2 of 3
Thread Starter 

Here is my tank with the firebox entry cut. I need to take a updated photo but since then i have also ground off and filled the holes and ground everything smooth from the thread adapters and burned it once to remove any smell and peel the paint. I plan to burn it again once the doors are cut so it burns a little hotter and better! Yes it is upside down right now but due to seam location this is the way i chose to position it and i will flip it over.

 

post #3 of 3
Thread Starter 

Can anyone give me some input on the specs????

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