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<DIV><SPAN class=429471016-25032003><FONT face=Arial color=#0000ff size=2>The
adaptor is a great idea. </FONT></SPAN></DIV>
<DIV><SPAN class=429471016-25032003><FONT face=Arial color=#0000ff size=2>Bill
werwage, who makes CF pipes, mostly for CL Stunt, puts a small machined aluminum
piece in the front of his pipes for the same reason.</FONT></SPAN></DIV>
<DIV><SPAN class=429471016-25032003><FONT face=Arial color=#0000ff
size=2>Dean</FONT></SPAN></DIV>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> s.vannostrand@kodak.com
[mailto:s.vannostrand@kodak.com]<BR><B>Sent:</B> Tuesday, March 25, 2003 10:52
AM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> Re: question
regarding header & tuned pipe<BR><BR></FONT></DIV><BR><FONT
face=sans-serif size=2>Every change in backpressure, due to the expansion
chamber or header change will cause a wave reflection, however, the effects of
necking down from 7/8 to the approx 3/4" OS pipe will not be much. The
bigger problem is that if the pipe is composite (CF) you will ablate the pipe
input and ruin the pipe. I've seen 3 of these for repair. The hot
exhaust gasses can not be allowed to contact the end of the fibers and resin
for most resins. ES pipes fail in this fashion. Some people have
been successful in using a squishy coupler (like the Macs grey) but this is
not a reliable setup for most people. </FONT><BR><BR><FONT face=sans-serif
size=2>The Mintor carbon fiber pipe (I have a N.I B. one for sale for $160
including shipping) uses an aluminum inlet to prevent this. I also have
a Macs to OS adapter made from aluminum for $12.</FONT> <BR><BR><FONT
face=sans-serif size=2>-Lance</FONT> <BR><BR><BR><BR>
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<TD><FONT face=sans-serif size=1><B>"Ihncheol Park"
<PatternFlyer@msn.com></B></FONT> <BR><FONT face=sans-serif
size=1>Sent by: discussion-request@nsrca.org</FONT>
<P><FONT face=sans-serif size=1>03/24/2003 09:03 PM</FONT> <BR><FONT
face=sans-serif size=1>Please respond to discussion</FONT> <BR></P>
<TD><FONT face=Arial size=1> </FONT><BR><FONT
face=sans-serif size=1> To:
"NSRCA" <discussion@nsrca.org></FONT> <BR><FONT
face=sans-serif size=1> cc:
</FONT> <BR><FONT face=sans-serif size=1>
Subject: question regarding
header & tuned pipe</FONT></TR></TBODY></TABLE><BR><BR><BR><FONT
face="Courier New" size=2>Hi, All,<BR><BR>I have a question regarding the
header & tuned pipe.<BR><BR>I will be testing a really light Tuned pipe
(Japanese F3A pilot is testing<BR>the pipe on OS 140). It is 550mm
length, 48mm diameter, 18mm inlet<BR>diameter. 38g for weight. I
will have to weigh it before believing the<BR>weight of this pipe.<BR>I
believe the pipe is being tested with Hatori/OS header<BR><BR>My headers have
diameter of 20mm ~ 22mm (Macs headers) that is larger than<BR>the inlet of the
pipe.<BR><BR>Does the differences in the diameter of Outlet of header and
Inlet of pipe<BR>make differences when tuning for the
pipe?<BR>thanks,<BR><BR>Ihncheol Park<BR><BR>1973 White Ave., #402<BR>Moscow,
ID 83843<BR>(208) 883-7882 (home)<BR>(208) 661-5018
(cellular)<BR>PatternFlyer@msn.com<BR><BR><BR>=====================================<BR>#
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