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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Fuel ?<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Michael
Cohen<br>
<b>Sent:</b> Wednesday, May 20, 2009 5:24 PM<br>
<b>To:</b> nsrca-discussion@lists.nsrca.org<br>
<b>Subject:</b> [NSRCA-discussion] The good, the bad, and the ugly<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>The Good: I finally got out to fly
today and put up flights 6 and 7 for the season.<br>
<br>
The Bad: To say I practiced flying the Masters Pattern might not hold up
in court. It had looping segments (of various radii), straight lines
(some of very, very short length), roles (lets talk about mortgage rates
instead); in other words, it had all the basic elements. It also could be
argued that I was flying the Wonkavator, up ways and down ways, sideways and
back ways and slantways......<br>
<br>
The Ugly: 5 minutes into flight #2, the engine stopped. After a fun
crosswind glide, I took the engine apart at the field to find the
crankshaft-piston area very dry with shaving's everywhere, a mashed and
bent (sort of) connecting rod, and a damage to the rotary valve. I need
to take pictures and post them because I have never seen damage like
this. It looks like lubricating oil was unable to get into the region and
the engine just ate itself.<br>
<br>
This was my 160DZ and is on the heals of breaking the shaft that supports the
rocker arms on a 140DZ suddenly a month or so ago. Is there something
wrong with the lubrication system on these motors due to some kind of
blockage? Any suggestions on what to check would be appreciated.
The engines all looked clean and free of and kind of FOD when I took them apart
and re-assembled them this late winter/early fall. Before I go killing my
last 170DZ, I am open to what people think I should look for (beside an OS,
going electric, or gas).<br>
<br>
Mike Cohen<br>
D4<br>
<o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Hotmail®
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