<!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 6.00.2900.2180" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff"
bgColor=#ffffff>
<DIV><FONT face="Arial Narrow" size=3>I've been running the 1.45 for a couple of
months and have about 10 hours (58 flights) on it so far. The bearing is showing
no signs of wear yet. I'm running 15% S&W fuel and run the engine dry after
every session and <STRONG>LOAD</STRONG> it with Mobil 1; not just a few drops -
probably about a tablespoonful, maybe more. I removed the integral pump and am
using a Perry so probably any after run oil would do; no diaphragm to worry
about.</FONT></DIV>
<DIV><FONT face="Arial Narrow" size=3></FONT> </DIV>
<DIV><FONT face="Arial Narrow" size=3>For the first run of the day, I remove the
glow plug and blow out the oil with the starter, replace the plug and start it
up. It usually "complains" a little for the first start, but it always runs on
the second or third try. Thereafter it will flip start for the rest of the
day.</FONT></DIV>
<DIV><FONT face="Arial Narrow" size=3></FONT> </DIV>
<DIV><FONT face="Arial Narrow" size=3>It does eat plugs, though. They seem to
last only about 10-12 flights. (OS F's) Any cure for this?</FONT></DIV>
<DIV><FONT face="Arial Narrow" size=3></FONT> </DIV>
<DIV><FONT face="Arial Narrow" size=3>Dave Wartel</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=Rcmaster199@aol.com
href="mailto:Rcmaster199@aol.com">Rcmaster199@aol.com</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> Sunday, September 26, 2004 9:59
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: Webra bearing life
report</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>That is terrible bearing life from the set-up Keith. Mine
lasted about 100 hours (452 flights) until the pump finally went, which
meant the engine ran lean for several flights and then the bearing went.</DIV>
<DIV> </DIV>
<DIV>Bearing no 2 has run all season and has about 32 hours on it so far, or
about 150 flights; same engine with a new pump.</DIV>
<DIV> </DIV>
<DIV>Fuel is the same cool power I spoke about before: 50:50 mix of 5% CP and
30% heli mix, plus one ounce of Klotz Pro per gallon</DIV>
<DIV> </DIV>
<DIV>MattK</DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid">
<DIV><FONT face=Arial size=2>Prompted by Brian's excellent news regarding
the new stainless steel bearings available for the Webra 1.45/1.60 I thought
I'd share the following info on my Webra bearing life (standard
non-stainless steel). </FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>I keep a log of all flights including the
duration of each flight (rounded to the minute). Last week I went through
the arduous task of entering data on about 340 flights into MS Excel. I also
keep a log of each bearing change so I was able to compile data on bearing
life on over 70 hours of flight time. </FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>All of my statistics below are reported in
hours because flights differ in duration. Also, the decimal points represent
a fraction of an hour, not minutes. For example 2.5 would be 2 1/2
hours. </FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>I currently have three Webra engines, one in
each of my two planes and one backup (thanks to the RadioSouth $259
special). I also had one Webra in which the bearings disintegrated and the
engine was destroyed. Horizon replaced this engine free of charge (thanks
Horizon). I have broken out bearing life times based on each engine.
</FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>Webra 1: </FONT></DIV>
<DIV><FONT face=Arial size=2>- Original Bearings: 12 hrs (may be off an hour
or so, first runs were not in current aircraft and not logged)</FONT></DIV>
<DIV><FONT face=Arial size=2>- Bearing 2: 13.22 hrs</FONT></DIV>
<DIV><FONT face=Arial size=2>- Bearing 3: 9.40 hrs</FONT></DIV>
<DIV><FONT face=Arial size=2>- Bearing 4: still in engine, 0.67
hrs</FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>Webra 2: </FONT></DIV>
<DIV><FONT face=Arial size=2>Original Bearings, 7.85 hrs (bearings
disintegrated and destroyed engine)</FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>Webra 3: </FONT></DIV>
<DIV><FONT face=Arial size=2>Originals Bearings: 11.38 hrs</FONT></DIV>
<DIV><FONT face=Arial size=2>Bearing 2: still being used, 6.37
hrs</FONT></DIV>
<DIV><FONT size=2></FONT><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial size=2>Webra 4: </FONT></DIV>
<DIV><FONT size=2>
<DIV><FONT face=Arial size=2>Originals Bearing 9.02 hrs
</FONT></DIV>
<DIV><FONT face=Arial>Bearing 2: still being used, 2.9 hrs.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>As you can see the times for replacement vary between
7.85 hrs and 13.22 hrs. If you take out Webra #2 that suffered the early
bearing disintegration then the range is consistently between 9 & 13
hrs. The average being 11 hrs.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I found this quite interesting as it represents a
fairly consistent pattern of bearing life.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I'd be interested to hear anyone else's results
or comments. </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Keith Black</FONT></DIV></FONT></DIV></BLOCKQUOTE></DIV>
<DIV></DIV></BLOCKQUOTE></BODY></HTML>