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<DIV><FONT face=Arial size=2>Okay - my experience has been -</FONT></DIV>
<DIV><FONT face=Arial size=2> a. Between end of header
and beginning of pipe - not more than 3/8"; 1/4" is better.</FONT></DIV>
<DIV><FONT face=Arial size=2> b. Tunnel ventilation - at
least 1/4" around the pipe along it's entire length, with more airspace the
better. Inlet opening (nose) at least 1.5" x 2" directly in front of the
cylinder head, then a "scoop" directing air at the main bearing area of the
crankcase. Exits in the belly pan need to be at least twice the inlet
area; I try to make sure there is more exit airspace than needed, as that
seems to help reduce overheating on the ground. The exit airspace should
be as close as practicable to the stinger end of the pipe.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>This info is just my experience....running 2
strokes with up to 30% nitro in pattern planes.</FONT></DIV>
<DIV><FONT face=Arial size=2> Less airspace around pipe, and
smaller entry/exit holes = shorter bearing life, plug life, pipe life (Bolly's),
and coupler life (all brands). More air moving along the pipe and out the
back is a "good thing".</FONT></DIV>
<DIV><BR>Bob Pastorello, Oklahoma<BR>NSRCA 199, AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </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=wgalligan@goodsonacura.com
href="mailto:wgalligan@goodsonacura.com">Wayne Galligan</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> Wednesday, March 03, 2004 10:59
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Coupler Size for Mintor
Header/Pipe</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Could you expand on proper prior to flogging
please?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>WG</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob
Pastorello</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> Wednesday, March 03, 2004 10:52
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Coupler Size for Mintor
Header/Pipe</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>Heck, Gray - I would have GIVEN you some to
try.....</FONT></DIV>
<DIV><FONT face=Arial size=2> The flogging ONLY can occur
if you have a properly-ventilated pipe tunnel, and proper distance between
header and pipe that the coupler couples.</FONT></DIV>
<DIV><FONT face=Arial size=2> It is pretty cool coupler
stuff, though....works DANDY.</FONT></DIV><FONT face=Arial size=2>
<DIV><BR>Bob Pastorello, Oklahoma<BR>NSRCA 199, AMA 46373<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
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