Alphafarrier Posted February 29, 2020 Share Posted February 29, 2020 So I am building a 3/4" mikey burner as per the instructions in Mikey's book. One difference is that I am making it out of schedule pipe instead of a pipe nipple. The book calls for 4 air slots, however I believe since then Mikey proposes an odd number of slots? My question is this: assuming I go to 3 slots, what size to i need to make them? As close as I can figure, the plans call for 4 slots, 1/2" x 2 3/4". I added up the surface area of the slots on a 1" burner. Proportionally, It seems to me that on a 3/4" burner, 3 slots at 1/2" x 2 3/4" should be enough. Thoughts? Quote Link to comment Share on other sites More sharing options...
Binesman Posted February 29, 2020 Share Posted February 29, 2020 Mikey will probably be along shortly to answer your questions himself. Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted February 29, 2020 Share Posted February 29, 2020 Add up the width of all four slots. Then divide by three equally spaced slots, instead of four. You will find the air induction increases, and you will also find that you have room left over to make the three ribs between those slots wider too. Isn't math fun when it goes in your favor? Quote Link to comment Share on other sites More sharing options...
Alphafarrier Posted February 29, 2020 Author Share Posted February 29, 2020 Ok, thanks Mikey. Yes, I think I’ve been overthinking this Quote Link to comment Share on other sites More sharing options...
Frosty Posted February 29, 2020 Share Posted February 29, 2020 It's not so much overthinking as it is how weird and less than intuitive fluidics can be. Mike knows his cookies because of the research and experimentation he's done. 3 slots = laminar flow. 4 slots = turbulence. If you'd like something to overthink about, try turbulence, it's effects and how to control it will give your neighbors headaches. I don't even try to explain why the T burner works as well as it does. It works well, is easy to make and tune which was my goal. Frosty The Lucky. Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted February 29, 2020 Share Posted February 29, 2020 Totally; I'm now on year twenty in refining burner designs, and Another Frankenburner has a better one (and about time someone came up with it too) Quote Link to comment Share on other sites More sharing options...
Binesman Posted March 1, 2020 Share Posted March 1, 2020 I think the next one will be some kind of a NARB. Quote Link to comment Share on other sites More sharing options...
Mikey98118 Posted March 2, 2020 Share Posted March 2, 2020 Multi-hole flame retention nozzles are a very good way to go. Naturally aspirated versus fan-blown, or how much fan is needed is a long way from being resolved; I'm not jumping down that rabbit hole Quote Link to comment Share on other sites More sharing options...
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