[TheForge] Propane Forge - Bending the burner

Wed Sep 11 17:22:01 2002

Ralph,
Were you using threaded 45s or welded fittings?  I think if you used the
welded 45s that it should work fine.  The threaded fitting would cause a lot
of disturbance in the flow.
Larry Zoeller
----- Original Message -----
From: "Ralph Sproul" <[email protected]>
To: <[email protected]>
Sent: Wednesday, September 11, 2002 6:21 AM
Subject: Re: [TheForge] Propane Forge - Bending the burner


>         Marc,  Using a friends hossfeld (come on over), or some old hour
> glass rollers you scrounge off a machine can get a bend in pipe for you.
> Supporting it thru the curve allows it to stop kinking which is what will
> happen if you just pull it across a corner.
>         Your absolutetly correct on curves and fittings changing the
> velocity of a burner.  The striaght burners I made for my new gas forge
had
> such a high velocity that the flame had not completely burned before
hitting
> the floor of the forge and created hot spots.   I also had a chimney
effect
> happening so I used two 45 degree elbows to make a trap out of them and
this
> mixed the gas better, slowed the velocity of the burner down so the total
> burn occured 1" off the floor resulting in no cold spots, and it was much
> quieter..............but the 3/4 pipe no longer had enough heat
> output..........so I went to 1" burner tubes and it is just what was
needed.
>
> Ralph
>
>
>
>
> ----- Original Message -----
> From: "Marc Godbout" <[email protected]>
> To: "TheForge" <[email protected]>
> Sent: Tuesday, September 10, 2002 7:42 PM
> Subject: [TheForge] Propane Forge - Bending the burner
>
>
> > I've seen several commercial propane forges that save space by shaping
> > the burner tube in a U-turn. These burners are also venturi-type, no
> > blower and it looks like they use regular pipe fittings to do this, not
> > some special cast burner tube.
> >
> > I was trying to do something similar with my side-arm, but just bending
> > at a right angle, using iron fittings. But this noticeably reduced the
> > output. I also tried 2 45deg fittings and that was just as bad.
> >
> > When the 45's were on it seemed like the fittings were getting hotter
> > than a normal burner pipe would. I'm thinking that the flame might have
> > been caught up in the fitting. Any ideas on how I could get a 90deg bend
> > with a home-brew?
> >
> > Thanks.
> >
> > --
> > Marc Godbout
> > http://www.ironringforge.com
> >
> > _______________________________________________
> > http://mailman.qth.net/mailman/listinfo/theforge
> > theforge mail list group photo site is
> > http://www.photoaccess.com
> > Login:  [email protected]
> > password:  anvil
> > ___________
> >
> >
>
> _______________________________________________
> http://mailman.qth.net/mailman/listinfo/theforge
> theforge mail list group photo site is
> http://www.photoaccess.com
> Login:  [email protected]
> password:  anvil
> ___________
>
>