<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial size=2>Don't focus on the 4 threads. Different
pipe/fuel/cooling setups will slightly change the optimal set up. The pump
appears to be working because you made a change an noticed a difference.
You shouldn't really be seeing a difference on the ground and in the air with
the Webra. Tune it for peak (minus a few clicks) and it should
remain. </FONT></DIV>
<DIV><FONT face=Arial size=2> I'm surprised if it really is changing
in the latter half of the tank. this shoulnd' be true if all is working
well. If everything is (i.e. pump) then maybe there is a cooling
issue. Can you fly without the chin cowl? I had this problem once
with a Prophecy of all things. Even though the head was sticking in the
breeze, the cowl was making some cooling problems. This actually was a
Bully, which is a webra. If these simple things are exhausted, then maybe
the pump diaphram needs service. If you could swap a pump from a friend,
that would ice it.</FONT></DIV>
<DIV><FONT face=Arial size=2>-_lance</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<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>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<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>
<BLOCKQUOTE dir=ltr
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<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>