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<DIV><FONT face=Arial size=2>Bill,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>The rockers seem to be moving correctly when turned
by hand, all seems well there.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ken</FONT></DIV>
<DIV>----- Original Message ----- </DIV>
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style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=billglaze@triad.rr.com href="mailto:billglaze@triad.rr.com">Bill
Glaze</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, June 01, 2005 10:37
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: YS 91AC</DIV>
<DIV><BR></DIV>Also, be sure that you haven't lost a rocker arm retaining clip
on the end of the rocker shaft. I had that happen once, and it had
similar symptoms to those you describe. Bill Glaze<BR><BR>William C.
Harden wrote:
<BLOCKQUOTE cite=mid000e01c56709$fa2cbe10$7b00a8c0@wharden type="cite">
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<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Ken,<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Do you know how to
check the valve gap?<SPAN> </SPAN>Your problem could be that one of
the valves is not completely closing. <SPAN> </SPAN>If this is the
case, then it could be either carbon build up on the underside of the valve,
or that the valve gap is too small (maybe none at all) and the valve never
completely closes. <O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Also, I have seen
glow plugs blow apart and there is hole in the plug itself.
<SPAN> </SPAN><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Hope you solve the
problem.<O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><O:P></O:P></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Bill<O:P></O:P></SPAN></FONT></P>
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<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Tahoma size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">-----Original
Message-----<BR><B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> <A
class=moz-txt-link-abbreviated
href="mailto:discussion-request@nsrca.org">discussion-request@nsrca.org</A>
[<A class=moz-txt-link-freetext
href="mailto:discussion-request@nsrca.org">mailto:discussion-request@nsrca.org</A>]
<B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Ken
Thompson<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Wednesday,
June 01, 2005 7:05 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
<A class=moz-txt-link-abbreviated
href="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR><B><SPAN
style="FONT-WEIGHT: bold">Subject:</SPAN></B> YS 91AC</SPAN></FONT></P>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi
all,</SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have a YS-91AC that came in a
plane I aquired last weekend. On the 16th flight I lost the motor
about 2 minutes into my routine. After a safe, and pretty nice
landing, I might add, I brought it back to the pits to see what
happened. I could turn the prop by hand with almost no
back-pressure. </SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I pulled the motor out when I
got home and checked it out the best I know how. Pulling off the
backplate I see the connecting rod and piston seem to be OK and the
valves seem to be moving like they're supposed to. I don't know a lot
about these engines, as this is the first YS I've run in a
plane. </SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">What I need to know is where is
the best place to send the motor to be checked out and
re-built. I don't want it just patched up, I would like it done
right, but a quick turn around.</SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Asking too
much?</SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks in
advance,</SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN style="FONT-SIZE: 12pt"><O:P></O:P></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal style="MARGIN-LEFT: 0.5in"><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Ken
Thompson</SPAN></FONT><O:P></O:P></P></DIV>
<DIV>
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size=3><SPAN
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