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<DIV><FONT face=Arial size=2>Three turns out on the high-end needle, holy smoke!
You must have your pump pressure really low or have pump problems. My needle is
around 1.5 turns or less out. I'm wondering if the previous owner didn't switch
to the OS 140 because he just couldn't get the Webra adjusted correctly? If this
is the case he may have messed up the settings on the pump. It doesn't sound
like your pump is old enough to have worn out, maybe it has debris in it. Do
you, and did the previous owner, use a fuel filter in front of the
pump?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Another thing to watch out for is poor performance
due to bearing wear. When I first started running the Bully/Webra I was pleased
with its performance after some of the local guys gave me some pointers on how
to get it tuned correctly, but toward the end of the season when the weather got
a bit cooler it stopped running very well. I assumed the weather change required
adjusting the mixtures but I just couldn't seem to get it right this time and
often it would bog down at the top of uplines. Then suddenly one day it died in
mid air and when I landed I found that the prop could barely be turned, the
bearings had gone out! The poor running prior to this was a warning sign.
Luckily there was no major damage to the engine and upon changing out
the bearings my good running motor was back to its excellent performance and I
no longer had any adjustment problems.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I'd open the engine and look at the bearings, also,
as Lee mentioned, if you can't get it really rich you probably have a pump
problem, three turns is far greater than what I've seen on the needle
adjustment. As to the tank placement, you don't need to move it to the firewall
if the pump is working correctly. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If you have someone local that knows a lot about
pumped pattern engines then I'd suggest you seek their assistance.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Good luck,</FONT></DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<DIV><FONT face=Arial size=2></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=randy10926@comcast.net href="mailto:randy10926@comcast.net">Randy</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> Thursday, June 10, 2004 10:01
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Webra Problem</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>I got the engine new used last year. It ia
a AAR. Did not fly that much last year; but the engine mostly ran
well. Sometime go a little rich and lose a little vertical. Has
been less reliable this year after the winter.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Throttle up before vertical and bogges part way
up about half the time.replaced fuel tank earlier this week.
Turned pump pressure in one turn today. Have high end around 3
turns out. I see smoke on the ground, but much in the air. Seem to
bog more on the latter half of the tank. Moved tank to just in front of
wing tube to shorten line to pump;but did not see any change.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>No idea how many flights before I got it, but not
that many as owner decided to stay with OS 140.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am going to clean carb out in the
morning. And check to see if the pump pressure is at four
threads.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Randy</FONT></DIV>
<DIV><FONT face=Arial size=2></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=tkeithb@comcast.net href="mailto:tkeithb@comcast.net">Keith
Black</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 09, 2004 2:12
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Webra Problem</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial
size=2></FONT><BR></DIV>
<DIV><FONT face=Arial size=2>Randy, </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is the Webra new (or new to you)?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Has it been running well and now it's not doing
so well or has it always had problems?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Has the pump ever been adjusted since it was
new?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When loosing power on the uplines is it wide
open then bogging down after being in the upline for a while, or are you
increasing throttle while in the upline and then it's coughing?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>How much smoke does it blow when wide open in
level flight?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>How many flights do the bearings have on
them?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<DIV><FONT face=Arial size=2></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=randy10926@comcast.net
href="mailto:randy10926@comcast.net">Randy</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 09, 2004 12:55
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Webra Problem</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>My webra 145 with a normal carbo seems to be
losing power on the up lines. It seems to me that the pump should
delive a near constant flow of fuel. So I should not need to have is
real rich on the high end to handle the up lines. But still losing
power on uplines, so have been richening it.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Low end seems
fine.</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>