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<DIV><FONT face=Arial size=2>Peter: A friend had similar problems
yesterday. See my query to Dave Shadel at RC Universe,under the YS Engines
section. </FONT></DIV>
<DIV><FONT face=Arial size=2>Maybe his answer will address your
problem?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Dave</FONT></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=pentagon.systems@bigpond.com
href="mailto:pentagon.systems@bigpond.com">Peter Pennisi</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> Tuesday, April 22, 2003 10:58
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> YS 140DZ fault?</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>Hi
All,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>I tried running my
YS140 DZ for the first time on the bench (I am glad that I did now) without
much success.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>Main
needle was set to 2 turns initially and regulator untouched from
factory setting. Rest is usual with 16 x 12 APC.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>Engine started OK
and idled briefly however when I started to open up the throttle
slowly it would start to run hard lean from half throttle and then
stop abruptly (detonated). Then I opened the needle another 1/2 a turn
and same result. I then wound the main needle in to 1 1/2 turns and same
result. During this period I started to hear a rattle noise from around the
mechanical pump assembly so I stopped my testing.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>I spoke to the
Australian agent and he mentioned that some engines were getting around with
some suspect pumps. He has offered to supply a spare pump or
otherwise send the motor to him and have it repaired. (Yes, not
replaced)</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=741422713-22042003>My question to
everybody is how many people have had a pump related problem? and secondly is
there any truth that the pump may require some lapping in as he believes the
tolerances are probably a little tight.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003> </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003>Regards,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN
class=741422713-22042003>Peter</SPAN></FONT></DIV>
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