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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'>Guys,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I sold off nearly all my E stuff (only the
Tanics left) and my trusty OS 140 RX setup. Running YS now, I jumped into the
new style of short Hatori pipe /header combination from Central Hobbies (P/Ns
822,821). This setup looks to save about 2.0 oz over the Johnson header/Teflon
coupler/Hatori pipe combination. The installation is super clean and the
muffler comes with “ears” and “stand-offs” for the
mounting. No more zip ties! You just screw the muffler flanges down to the
pipe standoffs. The muffler has an O-ring that slip-fits onto the exit area of
the header. As there is no retention force of this attachment method, you must
use the flange mounts to prevent the muffler from sliding aft. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>The header is steel and appears solid, but
not overly done. The installation process is as follows: pass hollow bolt
through mounting flange, position brass washer over hollow bolt, screw hollow
bolt into the motor and tighten down the flange. Position gasket over flange,
install header onto flange using the three metric screws. Once the header is
installed, the hollow bolt is completely concealed. The only tip on usage I
have is that it takes a few tries to get the “tightening” procedure
down. As you tighten the hollow bolt, the flange will rotate in the last ¼ turn.
Thus, you must ensure that when the proper tightness is achieved, the flange
mounting pattern ends up in the correct position for the header to point down
the center of the pipe tunnel. 150 words to explain, 5 seconds to understand
once you have the system in hand. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>My only idea for improvement to the header/flange
system would be to install it first, then drill and tap an additional screw
point into the system. This extra screw should be positioned such that
extended portion of the screw fits in between the cooling fins of the motor. After
installed, cut off the head of this new bolt. What this would allow to happen
is for the flange to be positioned 100% correct when you re-install it, and
prevent it from rotating as the hollow-bolt is tightened. Instead of having to
tighten and reposition a few times to get it right, you would be able to
tighten it one time as there would be this new anti-rotation pin protruding
from the backside of the flange. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>However, GREAT system the way it is too –
same one Sean was using at the 2006 nats. Looks like header breakage is a
thing of the past with this setup.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks,<o:p></o:p></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.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Peter Pennisi<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, August 23, 2006
9:34 AM<br>
<b><span style='font-weight:bold'>To:</span></b> '<st1:PersonName w:st="on">NSRCA
Mailing List</st1:PersonName>'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [NSRCA-discussion]
NMP Pattern Header</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Don,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I am having good results with mine –
200+ flights later and going strong. You need a brace and you need at least 2
washers between engine and header + I washer inside – Total of 3 washers
to be used.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Don Filteau<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, 23 August 2006
2:23 PM<br>
<b><span style='font-weight:bold'>To:</span></b>
nsrca-discussion@lists.nsrca.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [NSRCA-discussion] NMP
Pattern Header</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>HI People</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I just got back from the flying field. My NMP
Header blew off my 160 YS. It pulled the threaded part that holds it
to the engine through the header part. Has anyone had this happen to them? I
have only put 5 gallons through this engine. I am turning a 16.5x12.5 <st1:place
w:st="on">W APC</st1:place> at around 8500 rpms. I am not sure if I like
this header. What are other people using on their 160'S? I can take
pictures to show people if they like.</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Don</span></font><o:p></o:p></p>
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