[TheForge] propane forge

[Jerry Frost]

Morning Steve:



----- Original Message -----
From: "Steve Smith" <sos@alum.mit.edu>
To: <theforge@mailman.qth.net>
Sent: Saturday, September 07, 2002 1:05 PM
Subject: Re: [TheForge] propane forge


> The side arm burner looks pretty interesting, a couple of questions.
>
> Why does the T fitting need to be asymetrical? People seem to use a
> choke when sized 1.25x1.25x0.75. Maybe the important part is the taper
> inside the fitting?
>

It doesn't. Use bushing reducers instead, it's just as easy and cheaper. I'm
using a 1 1/4" "T" bushed to 1" and am getting very close to a neutral flame
with a 0.040" mig tip for a jet. It's stable from around 4-50 psi. I was
going to try a 1 1/2" "T" but this is working well enough I might not mess
with it anymore. (Uh . . . Yeah, sure. <grin>)

> Frosty, a question about how you are running:
>  > In reply to Marc's post regarding the Robert Grauman's Side Arm
>  > configuration, I do it differently. (of course<grin>) The jet ejector
I'm
>  > running right now is also made from a pipe "T" but the tube's mounted
> in the
>  > side position, not on one arm. I run it as a "T", not a single side
port.


> Are you saying that the air intake and gas jet are in the left and right
> arms of the T, and the outlet is the bottom leg?
>

No. It's a cruciform configuration. Hold it up with the burner tube pointing
straight down and it makes a cross with the jet supply sticking straight up
and the intake ports to either side. I chucked the "T" up in the lathe, line
drilled and tapped it 1/8" pipe for the jet supply.

Regardless, don't use a "T" if you can get a pipe "cross" fitting.

> Thanks,
> Steve Smith
>

Frosty
------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.