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<DIV><FONT face=Arial size=2>One would think that making smoke would be easy
(usually plenty on our list - hard to contain though). Unfortunately, most of
the wands / sticks use a titanium or zinc compound that, while making great gobs
of smoke, are corrosive. Then there are the heating element types that use oil
or glycol for the smoke fluid - both can leave an undesirable residue, the
glycol is toxic, and they tend to be pricey. The "fog" machines are water vapor
based - not what I want to blow through an electric airplane. At the lab I had
a bubble generator that produced a dense stream of micro bubbles that we
used to study (engine) induction system airflow - great tool, but very
expensive. While Jim's idea is creative, I really don't want an airplane that
smells like cigar.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Actually, what has resulted
from this list query is more info regarding the smoke "pens". While
non-toxic, I'm not real sure how much smoke they produce. Scott's Regin
link suggests that the indoor RC wicks produce a fair amount of non-toxic smoke
and it appears that the wick is the same used in their smoke pen. An added
feature is being able to extinguish the thing after short use. Looks like
something worth a try.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks all</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Earl</FONT></DIV></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=brian_w_young@yahoo.com href="mailto:brian_w_young@yahoo.com">brian
young</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, February 19, 2006 2:04
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
Smoke</DIV>
<DIV><BR></DIV>
<DIV>Have you tried a google search for smoke sticks yet? or wind tunnel and
smoke? comes up w/ some interesting stuff.</DIV>
<DIV> </DIV>
<DIV>also...mcmaster carr has a smoke generating pen, gun, and some smoke
candles.</DIV>
<DIV> </DIV>
<DIV>fog generator etc.... amazing what that company
hast.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><BR><BR><B><I>Earl Haury <<A
href="mailto:ehaury@houston.rr.com">ehaury@houston.rr.com</A>></I></B>
wrote:</DIV>
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<DIV><FONT face=Arial size=2>Has anyone experience with smoke generators
that might be used to observe cooling airflows around motors / engines? I've
experience with smoke wands / sticks, but the ones I'm familiar with produce
corrosive / toxic smoke (and often way too much). I've also looked at
the smoke generators used by the scale ! RC steamboat folks, but they don't
seem to generate enough smoke. (I can get about the same with a soldering
gun and flux / oil.) I'd really like a controllable wand that generated a
fairly small stream of dense smoke. Any ideas?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>Earl</FONT></DIV>_______________________________________________<BR>NSRCA-discussion
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