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<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff size=2>Good
question. On my 150 cc twin, when I use a smaller prop that rips, the sound is
unreal, sort of a cross between a full scale racing plane and a jet. We all
love the sounds our planes make but our neighbors and other club members don't
always share our appreciation of the noise. </FONT></SPAN></DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff size=2>Just
received my Focus II, OS 160, pump, props, etc. !!! I'm all happy now, fondling
my new goodies ...</FONT></SPAN></DIV>
<DIV><SPAN class=344215721-13082004></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff
size=2>Rich :)</FONT></SPAN></DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=344215721-13082004> </SPAN><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org] <B>On Behalf Of </B>Richard
Strickland<BR><B>Sent:</B> Friday, August 13, 2004 5:46 PM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Re: Air filters<BR><BR></DIV></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT face=Arial size=2>It's Friday--going to Omaha--I was thinking about
what it was about the noise we liked: My Company is oriented to designing and
implementing Automotive Conveyor Systems(KC--Conveyortown USA) and most
of our union Millwrights and Ironworkers have Harleys(we also have the KC
Plant's maint. contract). These guys will go buy a new $20,000.00+ bike,
ride it directly to the mod shop and put on straight pipes. What'd ya do
THAT for? "So it sounds like a MOTORCYCLE!" Pattern
ships used to scream--it was what a pattern airplane was SUPPOSED to sound
like........but our ears used to ring for a few days following a contest then
also.........Have a great weekend and thanks again for all the
help.</FONT></DIV>
<DIV><FONT face=Arial
size=2>
Richard</FONT></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=richard.s@allied-callaway.com
href="mailto:richard.s@allied-callaway.com">Richard Strickland</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, August 12, 2004 1:00
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Air filters</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>We were looking for ANY way to quiet those
suckers down. My deal was running a RE short stroke Rossi in a
heavy, clean E-HUGE-1A and turning an 11-7.5 wood prop 18,000+ on the
backside of a Split-S. It was great. LOUD--but great. The
pipes would RING. Prop flutter was an issue along with airframe and
pipe noise, engine speed, etc., etc......... No question the newer
stuff is more capable and the patterns more challenging--but I don't know
if they are more FUN. <EM>Part</EM> of the enjoyment was going
out and making some serious racket.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>RS</FONT></DIV>
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<DIV DEFANGED_STYLE="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Jim_Woodward@beaerospace.com
href="mailto:Jim_Woodward@beaerospace.com">Jim_Woodward@beaerospace.com</A>
</DIV>
<DIV DEFANGED_STYLE="FONT: 10pt arial"><B>To:</B> <A
title=discussion@nsrca.org
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV>
<DIV DEFANGED_STYLE="FONT: 10pt arial"><B>Sent:</B> Thursday, August 12,
2004 12:35 PM</DIV>
<DIV DEFANGED_STYLE="FONT: 10pt arial"><B>Subject:</B> Re: Air
filters</DIV>
<DIV><BR></DIV><BR><FONT face=sans-serif size=2>Hi All,</FONT>
<BR><BR><FONT face=sans-serif size=2>I was under the impression that the
real cause of excessive noise was prop (rpm & diameter). The
actual engine noise and exhaust setup (by todays typical standard) was not
the significant cause of noise - the prop is the culprit. <BR>Jim
W.<BR><BR></FONT><BR><BR><BR>
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<TD><FONT face=sans-serif size=1><B><<A
href="mailto:tony@radiosouthrc.com">tony@radiosouthrc.com</A>></B></FONT>
<BR><FONT face=sans-serif size=1>Sent by: <A
href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</A></FONT>
<P><FONT face=sans-serif size=1>08/12/2004 01:32 PM</FONT> <BR><FONT
face=sans-serif size=1>Please respond to tony</FONT> <BR></P>
<TD><FONT face=Arial size=1>
</FONT><BR><FONT face=sans-serif size=1>
To: <discussion@nsrca.org></FONT>
<BR><FONT face=sans-serif size=1> cc:
</FONT> <BR><FONT face=sans-serif
size=1> Subject:
Re: Air filters</FONT></TD></TR></TBODY></TABLE><BR><BR><BR><FONT
face=Arial size=2>Richard:<BR>I make one for the OS 160...</FONT>
<BR><FONT face="Times New Roman" size=3> </FONT> <BR><FONT
face="Times New Roman" size=3>Tony Stillman<BR>Radio South<BR>3702 N. Pace
Blvd.<BR>Pensacola, FL 32505<BR>1-800-962-7802</FONT><FONT
face="Times New Roman" color=blue size=3><U><BR></U></FONT><A
href="http://www.radiosouthrc.com/"><FONT face="Times New Roman"
color=blue size=3><U>www.radiosouthrc.com</U></FONT></A> <BR><FONT
face="Times New Roman" size=3>----- Original Message -----
</FONT><BR><FONT face="Times New Roman" size=3><B>From:</B> </FONT><A
href="mailto:richard.s@allied-callaway.com"><FONT face="Times New Roman"
color=blue size=3><U>Richard Strickland</U></FONT></A><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=3><B>To:</B> </FONT><A href="mailto:discussion@nsrca.org"><FONT
face="Times New Roman" color=blue size=3><U>NSRCA</U></FONT></A><FONT
face="Times New Roman" size=3> </FONT><BR><FONT face="Times New Roman"
size=3><B>Sent:</B> Thursday, August 12, 2004 10:37 AM</FONT> <BR><FONT
face="Times New Roman" size=3><B>Subject:</B> Air filters</FONT>
<BR><BR><FONT face=Arial size=2>Anyone,</FONT> <BR><FONT
face="Times New Roman" size=3> </FONT> <BR><FONT face=Arial
size=2>When we first started trying to quiet things down, one of the areas
we looked at was intake noise. We used to use a stretch on filter
housing with small filter disks that helped the noise problems with the
added benefit of keeping crap out of the engine--gee, what a concept.
Are there any such animals available now? We fly off an old
asphalt runway and there is the possibility something significant was
sucked into a brand new 170 and destroyed the piston, sleeve, ring and
bearing. First time for everything, I guess. The 60 sized ones
did not seem to affect performance.</FONT> <BR><FONT
face="Times New Roman" size=3> </FONT> <BR><FONT face=Arial
size=2>Thanks,</FONT> <BR><FONT face="Times New Roman"
size=3> </FONT> <BR><FONT face=Arial size=2>Richard</FONT>
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