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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The Bolly pipes/mufflers also make for
good ballast if you hoping to increase the weight of your plane. The ES, Greve,
Asano, will save you ounces over a Bolly. Having tried the 480, 590, 565 Bolly
mufflers, ES 2C140 pipe, Greve, and some home-made multi chamber pipes, the Bollys
have always been the lowest in power output. The Bollys do sound quiet,
but that also may be due to the decrease in performance. The Bolly 565 is
a rectangular muffler that outperformed the 480 and 590, but weighs over 6.0
oz. </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Jim W.</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> Tomanek, Wojtek
[mailto:tomanekw@saic-abingdon.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>Tuesday, March
25, 2003</span></font><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'> </span></font><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>1:08 PM</span></font><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'><br>
<b><span style='font-weight:bold'>To:</span></b> 'discussion@nsrca.org'<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: question regarding
header & tuned pipe</span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><span class=EmailStyle17><font
size=2 color=navy face=Arial><span style='font-size:10.0pt'>Ron</span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><span class=EmailStyle17><font
size=2 color=navy face=Arial><span style='font-size:10.0pt'> </span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><span class=EmailStyle17><font
size=2 color=navy face=Arial><span style='font-size:10.0pt'>I have been using </span></font></span><b><font
size=2 color="#990000" face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:#990000;font-weight:bold'>Bolly FS-140 Four Stroke 1.40 Muffler for
two season now, it is very quiet, it holds the temperature well and it has an
aluminum neck at the intake that fits great with 1/2 in Teflon header coupler.</span></font></b></p>
<p class=MsoNormal style='margin-left:.5in'><b><font size=2 color="#990000"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#990000;
font-weight:bold'> </span></font></b></p>
<p class=MsoNormal style='margin-left:.5in'><b><font size=2 color="#990000"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#990000;
font-weight:bold'>Wojtek</span></font></b></p>
<p class=MsoNormal style='margin-left:.5in'><b><font size=2 color="#990000"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#990000;
font-weight:bold'> </span></font></b></p>
<p class=MsoNormal style='margin-left:.5in'><b><font size=2 color="#990000"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#990000;
font-weight:bold'> </span></font></b></p>
<p class=MsoNormal style='margin-left:.5in'><span class=EmailStyle17><font
size=2 color=navy face=Arial><span style='font-size:10.0pt'> </span></font></span></p>
<p class=MsoNormal style='margin-left:.5in'><span class=EmailStyle17><font
size=2 color=navy face=Arial><span style='font-size:10.0pt'> </span></font></span></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=2 color=black
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;color:black'>-----Original
Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> s.vannostrand@kodak.com
[mailto:s.vannostrand@kodak.com]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, March 25, 2003 1:47
PM<br>
<b><span style='font-weight:bold'>To:</span></b> discussion@nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: question regarding
header & tuned pipe</span></font></p>
<p class=MsoNormal style='margin-left:1.0in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'> </span></font></p>
<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
1.0in'><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt;color:black'><br>
</span></font><font size=2 color=black face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:black'>Bolly mufflers use a very different kind of
resin that is more temp resistent than the ES pipes. It will become
brittle over time, but will not ablate. Bolly's also eventually leak like
a seive over their length eventually.</span></font><font color=black><span
style='color:black'> <br>
<br>
</span></font><font size=2 color=black face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:black'>--Lance</span></font><font color=black><span
style='color:black'> <br>
<br>
<br>
</span></font></p>
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<p class=MsoNormal><b><font size=1 color=black face=Arial><span
style='font-size:7.5pt;font-family:Arial;color:black;font-weight:bold'>Ron
Lockhart <ronlock@comcast.net></span></font></b><font color=black><span
style='color:black'> <br>
</span></font><font size=1 color=black face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:black'>Sent by: discussion-request@nsrca.org</span></font><font
color=black><span style='color:black'> </span></font></p>
<p><font size=1 color=black face=Arial><span style='font-size:7.5pt;
font-family:Arial;color:black'>03/25/2003 10:11 AM</span></font><font
color=black><span style='color:black'> <br>
</span></font><font size=1 color=black face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:black'>Please respond to discussion</span></font><font
color=black><span style='color:black'> </span></font></p>
</td>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><font size=1 color=black face=Arial><span
style='font-size:7.5pt;font-family:Arial;color:black'>
</span></font><font color=black><span style='color:black'><br>
</span></font><font size=1 color=black face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:black'> To:
discussion@nsrca.org</span></font><font color=black><span
style='color:black'> <br>
</span></font><font size=1 color=black face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:black'> cc:
</span></font><font color=black><span style='color:black'>
<br>
</span></font><font size=1 color=black face=Arial><span style='font-size:
7.5pt;font-family:Arial;color:black'> Subject:
Re: question regarding header & tuned pipe</span></font></p>
</td>
</tr>
</table>
<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
1.0in'><font size=3 color=black face="Times New Roman"><span style='font-size:
12.0pt;color:black'><br>
<br>
<br>
</span></font><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>Lance,<br>
<br>
Would you know, is the end of the pipe being exposed to exhaust <br>
gas a concern with the Bolly pipes & mufflers?<br>
<br>
TIA Ron Lockhart<br>
<br>
----- Original Message -----<br>
From: s.vannostrand@kodak.com<br>
Date: Tuesday, March 25, 2003 10:52 am<br>
Subject: Re: question regarding header & tuned pipe<br>
<br>
> Every change in backpressure, due to the expansion chamber or <br>
> header change will cause a wave reflection, however, the effects of <br>
> necking down from 7/8 to the approx 3/4" OS pipe will not be much.
<br>
The bigger problem is that if the pipe is composite (CF) you will <br>
ablate the pipe input and ruin the pipe. I've seen 3 of these for <br>
repair. The hot exhaust gasses can not be allowed to contact the end <br>
of the fibers and resin for most resins. ES pipes fail in this <br>
fashion. Some people have been successful in using a squishy coupler <br>
(like the Macs grey) but this is not a reliable setup for most people. <br>
> <br>
> The Mintor carbon fiber pipe (I have a N.I B. one for sale for <br>
> $160 including shipping) uses an aluminum inlet to prevent this. I <br>
> also have a Macs to OS adapter made from aluminum for $12.<br>
> <br>
> -Lance<br>
<br>
<br>
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