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I used one with 1.45 Bullys for several years--and it sure acted like a pipe. 'If it walks like a duck.....' seems like we were 13-14" from the glow plug to the tangent 'high' point start. They tended to clog up after 150-200 flights. I had good results with everything from laundry detergent to thinner--followed by high pressure air done two-three times both directions. Some guys drilled the last baffle with a couple 1/8-3/16" holes--but I don't think that's needed.<BR>
RS<BR> <BR>
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From: lightfoot@sc.rr.com<BR>To: nsrca-discussion@lists.nsrca.org<BR>Date: Fri, 6 Feb 2009 08:29:10 -0500<BR>Subject: [NSRCA-discussion] OS140 Header/Pipe<BR><BR>
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<P class=EC_MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am installing a OS140RX engine and OS Header, and a Bolly MF 480 R pipe into a new (Impact) airframe. From the “Bolly Book” this appears to be more of a muffler than a tuned pipe. This model is not in the “book”.</SPAN></FONT></P>
<P class=EC_MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></P>
<P class=EC_MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Is anyone running this configuration?</SPAN></FONT></P>
<P class=EC_MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></P>
<P class=EC_MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Space is a little tight and I was thinking of cutting off some of the header but have no idea of the implications of this move. Evidently Bolly no longer produces CF pipes and I can find no specific information on this setup.</SPAN></FONT></P>
<B><I><FONT face="Brush Script MT" size=4><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Jay </SPAN></FONT></I></B><B><I><FONT face="Brush Script MT" size=4><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 13.5pt; FONT-STYLE: italic; FONT-FAMILY: 'Brush Script MT'">Marshall</SPAN></FONT></I></B> <BR>
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