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Don't measure that barrel wall diameter, anyone getting cherry hot or a blow out ,my stress test

 
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Location: durham nc
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It would be nice if the barrel wall diameter was a little thicker ,this could be one of the sketchier elements of th rs ,wondering if anyonehas had barrel blowout

Barrel stress test, after my rsmh burnes a while notice it will get a little more sluggish, assume the mass and flu Gas temp getting closer to equilibrium , i have attached the shop vac to the chimney with cloth rag as seal. Turbo rocket, this thing roars bluefish mostly invisible flame at the throat be ready to feed the beast,few masonry cracks and pings first time(will be casting one of those fancy riser,burn box on the forums next year)
I have ran it for an hour before and deep fried on top I have a horizontal run where I wrap a wet shirt round the flu pipe as the flu gases are moving much faster don't melt that shop vac with 30' buried thermal mass 2" next to 2 rows 55 gallon barrels of water, the flu gas temp are too hot to touch with shop vac running
Obviously you want to babysit this thing.
My barrel prep, before the build I used a corrugated metal covert on blocks vertical stuffed with dry hay cypress scraps used veggie oil...ect. with the gap and the barrel to be used atop with the shop vac in blow mode feeding the fire below. 3 min paint gone, 5 min partially cherry hot I exaimined the barrel for thin spots burning metal. This really blazes it out

I have welded a air gap (diffuser)with the lid inside the bottom now top of the barrel if you don't have welder you can cut tabs round the perimeter and wedge it in maybe a few metal screws
 
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