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Post by belgiangulch on Feb 3, 2021 7:32:07 GMT -8
Hi All; I was planning on waiting until spring to install a bypass on my shop stove (7" batch, double barrel, brickbell.) The extended January thaw convinced me, yesterday WAS spring. The entire job including a run to town to buy a 4" hvac flex 90. Took apx 3-4 hours Using a 4" diamond core drill and a 4" bimetal drill. The longest slowest part of the job was drilling thru 4" of clay brick. My core drill was only 1.25" deep and the bimetal drill was 2"... So core drill for awhile, then using a 3/16" masonry drill I drilled holes in strategic locations. A tapered metal punch was used to crack out chunks. Eventually I made it thru! Note to others) a bimetal drill is not a very good tool for cutting brick! After cutting thru the brick I went to use the Bimetal saw on the 8" stovepipe... Oh it worked but mainly by friction it was so dull, I melted a hole thru! The 4" sliding bypass I used is the same one I sell at dragontechrmh.com/. It slipped nicely into my brick hole. A generous bead of Rutland gasket cement and one tapcon masonry screw with fender washer sealed it up to the brick. A bit of wiggling around and the 4" 90 was slipped into place. A hose clamp secures it at the gate and metal duct tape seals it where it enters the stack. This works awesome!!! No bell should be built without a bypass. An extra added benefit for me is I now have the ability to Not heat the bell! We have many "shoulder season" days here. When it will be 30 in the morning but 70 in the afternoon. Now I will be able to run the batch and mainly only produce radiant heat off the barrels! How cool (warm) is that!
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Post by Dan (Upstate NY, USA) on Feb 3, 2021 13:20:29 GMT -8
I have one of those doors, installed mine upside down so it fails open, have a little condensation leak from it.
If I had to do it again I would have installed it sideways to prevent the leak and so it can't fail open or closed.
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Post by belgiangulch on Feb 3, 2021 13:57:56 GMT -8
Mounting it sideways is a good idea. Might rotate mine this summer.
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Post by belgiangulch on Feb 6, 2021 11:27:15 GMT -8
After thinking it over and seeing I was getting those same drips as Dan. I went out the next day and turned my gate horizontal. Worked perfect! Drip gone, no accidental gravity gate movement either. Anyone installing this style gate should definitely mount it sideways.
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Post by pigbuttons on Feb 6, 2021 14:27:40 GMT -8
Nice work and an excellent addition. Thanks for sharing.
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