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How is the gas fed into the Ruben' tube?  Is it a local tank or a  
distantly fed gas tank?
If it's distantly fed, then I would think your delivery system is  
under-sized.

-William

On Nov 5, 2009, at 5:13 PM, Holly Csiga wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology  
> Centers
> Incorporated, a worldwide network of science museums and related  
> institutions.
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>
> Hello ISEN folks!
>
>
>
> My colleague Matt has been working on improving the function of our
> Ruben's Tube.  If you operate an RT, or know what may cause the result
> that is his description below, we'd love any suggestions or ideas as  
> we
> finish it up for our sound demonstration.  Many Thanks! -Holly
>
>
>
> Holly S. Csiga
>
> Presentation Specialist
>
> Pacific Science Center
>
> (206) 443-3658
>
>
>
> After I play a song on the keyboard through the Ruben's Tube (3-4
> minutes) I will play a pre-recorded song through the tube also.  Any
> song. When I get about a minute into the song, I start to notice the
> fire dying down and parts of the tube will go out completely. This  
> will
> continue until I get small nibs of flame coming out. My guess is that
> the tube has become unpressurized and has a problem pumping out flame.
> Has this happened to any of you?
>
>
>
> If this is the case, if it easily becomes unpressurized, I worry about
> pumping too much sound through the RT. Maybe it just can't handle  
> having
> the keyboard played through it followed by a pre-recorded song.  I can
> play a song in my show, but it has to be just one or the other.  It
> doesn't seem to handle both back-to back.
>
>
>
> What have been your successes with playing just songs? Have you been
> able to get through a whole one or a couple of them?
>
>
>
> Please tell me what you can.  I would love it if different people send
> their thoughts about this so that we could get a variety of possible
> ideas.
>
>
>
> Thanks!
>
>
>
> Matthew Steiner
>
> Science-Interpretation/Presentations Operations Lead
>
> Pacific Science Center
>
>
>
>
>
> Pacific Science Center is an independent, not-for-profit educational
> institution that inspires lifelong interest in science, math and
> technology.
>
> Discover Pacific Science Center
>
>
>
>
>
>
>
>
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William Katzman
Program Leader
LIGO Science Education Center
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(225) 686-3134

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