[TheForge] Re: morphed GAS FORGE QUESTION

[Ron Childers]

Ok, Murph, I'm painted into a corner- Help! Justin said his blown forge is
"Pretty quiet", but he did say *small* blower...I think the roar is the
burning gasses coming out of the chamber so wall thickness shouldn't be a
factor....??? Also, would a 3 burner manifold have anything to do with the
noise level?

Ron C

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Justin Fellenz
Sent: Tuesday, October 05, 2004 2:16 PM
To: pesetsky at Princeton.EDU; Sponsored by ABANA
Subject: RE: [TheForge] Re: morphed GAS FORGE QUESTION

My homebuilt blown forge (mankel 3-burner manifold with a small
squirrel cage blower) is pretty quiet actually, through no good
planning of my own. It's got thick walls, 2 1/2" of 2800 degree fire
brick and castable doors the same thickness. Maybe that's what muffles
it. I run it at 3-4 lb gas and the air comes through a 6" flex hose
about 3' long. Dunno.

JRF
--- "Mark A. Pesetsky" <pesetsky at Princeton.EDU> wrote:

> 
> 
> 
> Roger,
> 
>  I don't think it is possible to quiet a blown forge to the decibel
> level of
> an atmospheric forge. I used Murph's atmospheric forge in a demo a 
> few months ago and it was great. I could hear questions and they
> could hear
> answers. I used a blown forge in a demo last month and it sounded
> like an
> F-14 - couldn't hear it thunder. My blown forge is noisy but
> efficient - I
> may try your muffler idea and see if there is any difference
> 
> Ron C 
> 
> 
> Is there a link showing the Murph forge design?
> 
> I think the forced air sounds cool. But in a teaching environment I
> wouldn't
> want one...
> 
> Mark
> 
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