pick apart a design (forge design)

[gotmike]

haven't gotten that email yet brian... figure you're just busy... but in the mean time i started fiddling with the burner... replaced the 1/16 tip with a .045 tip... then moved it back into the 1" WYE so that it still had the neck down from the heavy 1" to 1 1/4" bushing and the burner flare tip... ended up with a flame that looks like this:

i looked a zoellers page... how does that modified side arm burner actually tie into the forge??? do i need to put a larger diameter tube into the side at a tangent to the end resultant inner wall, and then put the side arm burner into that tube???

 

[Brian Ayres]

Hello! Yup. Busy!

Sorry. I forgot to mention I edited that last post of mine and when I added the Zoeller site I did it in lieu of the e-mail as I thought Larry explaining stuff would be better than I ever could.

http://en.m.wikipedia.org/wiki/Venturi_effect

The link above should help you understand better WHY and HOW a sidearm burner works. I still don't have a computer to look at your pics, but your burner should have a big pipe, little pipe(8"long), big pipe
You essentially need an hourglass shape. The Zoeller design is technically an hourglass bent 90* in the middle with a jet nozzle tapped into the small side of what would be the 90.

If you don't have the small pipe between the big ones all you really have is a very rich burning torch. The venturi effect when done properly will not require any excess airflow from a hair dryer.
What pressures are you running your burner? It seems for a Zoeller type, 1-1/4" sidearm, I run around 7 PSI for the best operation with a .035 torch tip.