True, but I just stumbled across it on the net, under Mikey burners.
--- In email@example.com, StoneTool <owly@...> wrote:
> Boy.......... THAT'S AN OLD POST !!!
> I've built 5 of these big Mikey burners, three of which are in a
> single cluster burner. The three burners are joined to a 1-3 air
> fitting using copper pipe. A standard shop air fitting designed to
> allow you to run three whip hoses from one primary hose..... inexpensive
> aluminum part. It takes 2 100 lb bottles manifolded together to supply
> enough gas without icing up excessively. The fireball is downright scary!
> On 02/26/2013 11:55 AM, Michael Porter wrote:
> > You're welcome Howard.
> > I especially liked the round bar rings as nozzle spacer.
> > Mikey
> > --- In firstname.lastname@example.org, Stone Tool<owly@> wrote:
> >> I'm making several 1 1/4" Mikey Burners. to run my big tilting melt
> >> down furnace. I tried to use an oil furnace burner, but couldn't get the
> >> heat out of it I wanted. The first burner was built more or less to
> >> plans with all the aiming screws and stuff... works well. I'm building
> >> the others using the lathe and mill for accuracy and eliminating all
> >> adjustments except for nozzle projection (sliding in and out), and of
> >> course the choke. The two inch stainless flare will be welded into
> >> place. The air slots are milled with an end mill....... I am leaving
> >> them round to start with for comparison with the original with it's
> >> square ended slots. My thinking here is that the end plug where the
> >> nozzle enters the burner tube can be made so it just overlaps the round
> >> ends enough to square them... the forward ends won't matter because the
> >> choke doesn't make much difference out of end of travel... max air.
> >> The original works beautifully with an .045 tip. I tried an .062 tip
> >> and couldn't get enough air to it... still pretty good, but some orange
> >> tips on the flame. I tried the .062 both straight and tapered... didn't
> >> seem to make much difference. I'm tapering them in the lathe as I can't
> >> get them locally in a tapered tip in these sizes. Gas pressure is about
> >> 25 lbs.
> >> The Mikey 1.25 inch burner throws an impressive fireball........ very
> >> impressive!..... but not enough for my monster furnace to heat at
> >> anything like the rate I want. I'm looking at a cluster of 2 or 3 of
> >> them rather than building a monster. I have all the stuff to make the
> >> 1.25" burner including 2" stainless.
> >> Notes:
> >> 1: Electrical conduit makes a perfect slip fit on the outside of
> >> 1.25" black pipe for a choke sleeve. Re: [hobbicast]
> >> BackyardMetalcasting.com has been updated
> >> 2: If you have a lathe, it is pretty easy to press a bolt into
> >> ordinary schedule 40 1/4" pipe and drill it and tap for a
> >> mig tip rather than buying expensive 1/8 schedule 80
> >> 3: 1/4" rod wrapped around the end of the burner tube and spot
> >> welded to it ( two pieces spaced apart )... makes a quick
> >> and easy bushing for the flare to ride on. Spin it in the
> >> lathe or on the grinder to bring it down to a good fit,
> >> optimize and weld with 308-16 rod
> >> 4: It is easier to machine a plug for the end of the pipe with a
> >> lathe drilled hole than to mess around with taps and set
> >> screws on the nozzle holder. I won't do that again. This
> >> way only one set screw is needed and of course one tapped
> >> hole.
> >> 5: An acetylene regulator attaches easily to a propane bottle and
> >> allows you to crank the pressure up enough to do the job.
> >> H.W.
> >> P.S. Thanks Mikey.....for all your hard work in R&D on these.
> >> Your book was an excellet investment ... money well spent.
> >> I highly recommend it to anybody who wants to build a burner.
> > ------------------------------------
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