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<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff>Keith,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff>Thanks a lot for this advice. It give me a
lot to work with, I appreciate the detail.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff>I did have a typo on the prop, should have
said 17x12.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=252214905-25072004><FONT
face="Comic Sans MS" color=#0000ff>--Gordon</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> discussion-request@nsrca.org
[mailto:discussion-request@nsrca.org] <B>On Behalf Of </B>Keith
Black<BR><B>Sent:</B> Saturday, July 24, 2004 9:19 PM<BR><B>To:</B>
discussion@nsrca.org<BR><B>Subject:</B> Re: Webra 1.45
problem<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT face=Arial size=2>First thing I would do is to get a higher pitched
prop, I don't think the 17x2 has quite enough bite ;-)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Seriously though, have you ever adjusted the pump
pressure? I've now had four different Webra or Bully 1.45 engines and all have
had to have the pump pressure reduced (turning the pump screw counter-clockwise)
to varying degrees to run properly.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Questions:</FONT></DIV>
<DIV><FONT face=Arial size=2>Does the engine have trouble idling at 1900-2000
rpm? </FONT></DIV>
<DIV><FONT face=Arial size=2>Does it profuesly spit fuel out the carb and pipe?
</FONT></DIV>
<DIV><FONT face=Arial size=2>Is it blowing a LOT of smoke when it
runs?</FONT></DIV>
<DIV><FONT face=Arial size=2>When it dies does it cough a time or two and blow
out a few puffs of smoke?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>If the answer to three or more of these is yes then
</FONT><FONT face=Arial size=2>I would try the following:</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>(<STRONG>NOTE:</STRONG> The following assumes you
have already bench run the engine through at least 1/2 gallon starting extremely
rich then varying the needle settings and throttle
speeds.)</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>1. Reduce the pump pressure 1/2 to 3/4 turn from
the factory setting.</FONT></DIV>
<DIV><FONT face=Arial size=2>2. Use an OS Type-F plug.</FONT></DIV>
<DIV><FONT face=Arial size=2>3. Run a 17x10N prop (at least until the engine is
broken in well, that's what I always use).</FONT></DIV>
<DIV><FONT face=Arial size=2>4. Adjust the low end needle so it will idle
at around 2K for about 30 seconds then accelerate to full throttle without
coughing on the run up. </FONT></DIV>
<DIV><FONT face=Arial size=2>5. Adjust the high end idle so it will spin up
around 8300 rpm (with the 17x10 and greves pipe set per Piedmonts specs)
but is still blowing a good amount of smoke. I make sure mine always blows
smoke even after break-in, but even more so during the first several gallons of
fuel.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>When the high end is pretty rich, as you want it
for flight break-in, you may find it has trouble going from the mid-range
to high throttle without coughing, sputtering and sometimes even dying. Two of
my engines have had this problem, two haven't. It's possible that the two that
had this problem were left richer during the break-in flights. The two that had
this trouble would go from idle to full throttle just fine but would have
trouble if run at mid range for a while then pushed to full throttle. I believe
this was because I had them so rich, but my goal was to break them in without
damaging the engine. If you have this trouble then for your first gallon of
flight break-in just avoid the mid-range and fly primarily at idle and full
throttle. That may sound screwy but it worked for me. After you've got a
couple of gallons of fuel through start slowly leaning out the high end
needle so the mid-range transition improves. As the engine breaks in and you get
closer to the proper high end setting the mid-range will improve and eventually
should be very smooth and reliable. Note, as you adjust the high end you should
also re-adjust the low end as described in step #4 above.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Expect the bearings to need replacing by flight 40
or perhaps even earlier. On my most recent engine by the time I got it broken in
really well I only had about 15 or so flights until I needed to change the
bearings. However, after the bearing change it ran better than ever being broken
in and having new bearings .</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Best of luck,</FONT></DIV>
<DIV><FONT face=Arial size=2>Keith Black</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </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="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=GAA@owt.com href="mailto:GAA@owt.com">Gordon Anderson</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> Saturday, July 24, 2004 3:37
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Webra 1.45 problem</DIV>
<DIV><FONT face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT
face=Arial size=2></FONT><FONT face=Arial size=2></FONT><FONT face=Arial
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size=2></FONT><FONT face=Arial size=2></FONT><FONT face=Arial
size=2></FONT><BR></DIV><!-- Converted from text/rtf format -->
<P><FONT face="Comic Sans MS">I'm having a problem with my Webra 1.45 and I
hope someone can help me out. I have a new Hydeout (thanks to the guys that
gave me the control throw advice!) with a new Webra 1.45. Below are the
details on the motor setup:</FONT></P>
<P><FONT face="Comic Sans MS">Prop: APC 17x2</FONT> <BR><FONT
face="Comic Sans MS">Fuel: Magnum #1</FONT> <BR><FONT
face="Comic Sans MS">Plug: OS #8</FONT> <BR><FONT face="Comic Sans MS">Pipe:
Greves</FONT> <BR><FONT face="Comic Sans MS">Mount: Hyde type soft mount and
nose ring</FONT> <BR><FONT face="Comic Sans MS">Tank: Tetra 20oz, on CG of
model</FONT> <BR><FONT face="Comic Sans MS">I have about 2/3 of a gallon of
fuel run through the motor, this Webra uses the regular carb with the high
speed and low speed needles.</FONT></P>
<P><FONT face="Comic Sans MS">The problem is the motor dies when I roll from
inverted to upright. This happens mostly after I have been at idle for a
while. I'm flying the advanced routine and it dies during the roll out on the
bunt and the bottom of the double I even the slow roll. I have never made it
more than about 3 minutes into a flight.</FONT></P>
<P><FONT face="Comic Sans MS">It seems to run fine on the down lines at idle,
like in the stall turns and the outside square loop.</FONT> <BR><FONT
face="Comic Sans MS">When it dies it sounds like someone pulled the fuel line
off the engine, it just un winds. We tried leaning the low speed needle,
replaced the tank internal fuel line to the clunk.</FONT></P>
<P><FONT face="Comic Sans MS">Any advice?</FONT> </P>
<P><FONT face="Comic Sans MS">--Gordon</FONT> </P></BLOCKQUOTE></BODY></HTML>