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<DIV><SPAN class=530012113-21092002><FONT face="Courier New" color=#0000ff
size=2>There are no disadvantages to the types of pipes we use for the
Pattern 2 strokes. The tuned exhaust gives more power and in my
experience throttle response is actually smoother and quicker. These
engines are timed to be used with pipes, and in the cases
of OS/Hatori, ES Design, Asano and our own Greve, the pipes
are configured specifically for Pattern.</FONT></SPAN></DIV>
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<DIV><SPAN class=530012113-21092002><FONT face="Courier New" color=#0000ff
size=2>This is not to say that 2 stroke pattern engines don't work fine on
mufflers, because they do, but they work even better on appropriate tuned
pipes.</FONT></SPAN></DIV>
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size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=530012113-21092002><FONT face="Courier New" color=#0000ff
size=2>Lee Davis</FONT></SPAN></DIV>
<DIV><SPAN class=530012113-21092002><FONT face="Courier New" color=#0000ff
size=2>Piedmont Models</FONT></SPAN></DIV>
<DIV><SPAN class=530012113-21092002><FONT face="Courier New" color=#0000ff
size=2><A
href="http://www.piedmontmodels.com/">http://www.piedmontmodels.com/</A></FONT></SPAN></DIV>
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size=2></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> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Keith
Black<BR><B>Sent:</B> Saturday, September 21, 2002 3:51 AM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Tuned pipe or muffler with large
2-Strokes?<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>I'd like to hear some feedback on running tuned
pipes vs. mufflers on the large 2-stroke engines such as the OS 1.40RX, Webra
1.45 and Bully 1.45.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What I've understood is that these large engines
have plenty of power running just a muffler without a tuned pipe, and by not
running a tuned pipe the throttle response should be smoother and not so
"peaky". I'd think the smoother throttle response would make flying pattern
much easier. Certainly one of the benefits of 4-strokes is the instant
throttle response with no spin-up time. It seems as though using a pipe would
just aggravate the spin-up issue with 2-strokes.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>However, in reading some of the messages lately I
see that people are still running tuned pipes on these engines. For example,
under the "Webra Bragging" thread Matt indicated that he is running a Webra
1.45 with an OS/Hatori tuned pipe and it flies very well.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'd really appreciate hearing everyone's
experiences relating to this issue.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks,</FONT></DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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