[TheForge] Traveling Gas

[Jerry Smith]

Dan,

I have noted this information 

Jerry
--- Dan Brewer <danqualman at gmail.com> wrote:

> If your burner is built correctly.  That is the jet
> is pointed generally to
> the center of the burning tube .  You burner length
> is close to the 9:1 rule
> ( the length of the burner tube from the front end
> of the air inlet holes is
> 9 times the inner diameter of the burner tube) your
> jet is close to the
> correct size and you have a flare or a nozzle on the
> burner .  If these
> conditions are met your burner will work and the
> flame will not travel back
> up the burner tube.  But If your jet is fouled or is
> pointed to the side of
> the burner tube, You have insufficient air flow into
> the burner or the
> burner length is too short or too long you might get
> a burn in the burner
> tube.  The flame should sit just inside the
> flare/nozzle.  I like the nozzle
> better because it impinges on the flame just a
> little and provides a
> secondary ignition point when it gets hot.  The
> flare does the same thing
> but the flame doesn't touch it as much.  Both
> provide a place where the
> mixed gas can slow down and burn with out blowing
> out.  The porter burner is
> a bit more work to make but is a lot more
> controllable than the side arm or
> Reil type burners.  All of the burners benefit from
> a choke to help the
> burner start when cold and to do a little fine
> adjustment when u[p to temp.
> 
> Dan in Auburn
> 
> 
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf
> Of Steve Smith
> Sent: Thursday, February 15, 2007 6:00 PM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] Traveling Gas
> 
> Jerry,
> 
> Try the existing burners first (Reil, Porter, etc.).
> The work *really* 
> well, and I don't think they will work as well if
> you put screen in 
> them. There is no problem in these burners with the
> flame climbing the 
> tube, the flame is controlled by the flare at the
> business end.
> 
> Steve
> 
> Jerry Smith wrote:
> 
> > What kind of screen was it and if it isn't
> hardware
> > store stuff, we can I buy some?
> > 
> > Jerry
> > 
> > --- Grover Richardson
> > <grover.richardson at gtri.gatech.edu> wrote:
> > 
> > 
> >>The screen performs two purposes.  One is to mix
> the
> >>gas, the other is a
> >>fire block.  A third thing that is generally
> >>unnoticed is that the screen
> >>also keeps infra red from getting back to the
> >>orifice.  I have a plumbing
> >>pipe version of a burner and I ran it a few times
> >>without a twist of shim
> >>stock inside it for a mixer.  There was enough
> infra
> >>red in the forge to
> >>ignite the flame at the orifice.  A fun time was
> had
> >>by all until the burner
> >>was turned off<G>.
> >>
> >>-----Original Message-----
> >>From: theforge-bounces at mailman.qth.net
> >>[mailto:theforge-bounces at mailman.qth.net] On
> Behalf
> >>Of Bruce Freeman
> >>Sent: Thursday, February 15, 2007 2:26 PM
> >>To: theforge at mailman.qth.net
> >>Subject: Re: [TheForge] Traveling Gas
> >>
> >>Lynn,
> >>I don't understand your question.  Who says it
> would
> >>not be a good idea?
> >>Bruce
> >>NJ
> >>
> >>
> >>>>>langfarm at together.net 2/15/2007 2:18 PM >>>
> >>
> >>Hello
> >>
> >>Why would it not be a good idea to add a screen,
> as
> >>metal window screen
> >>, between the mixing chamber and the burn area?
> This
> >>is used in the
> >>boating world to keep flames from going back down
> >>the fill pipe..
> >>
> >> 
> >>
> >>Lynn
> >>
> >> 
> >>
> >> 
> >>
> >> 
> >>
> >> 
> >>
> >>Happens all the time.  The mixture just has to
> move
> >>faster than the
> >>flame front so the fire doesn't travel  back up
> into
> >>the mixing chamber.
> >>
> >> 
> >>
> >>CraigS
> >>
> >>
> >>
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> > 
> > 
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