<DIV>Yup, I agree. Replace the rear bearing before you fire the engine for the first time and you're good to go. Also, the front bearing in the 120 is a double sealed type (like the 140 F.I. rear bearing) whereas the 91 has a shielded bearing. In my experience the double sealed bearings last much longer so if you put one new bearing in the 120 you should have NO bearing issues for a long time.</DIV> <DIV> </DIV> <DIV>John Pavlick<BR><BR><B><I>michael s harrison <drmikedds@sbcglobal.net></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid"> <META content="Microsoft Word 12 (filtered medium)" name=Generator> <STYLE> <!-- /* Font Definitions */ @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4;} @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4;} @font-face {font-family:Tahoma; panose-1:2 11 6 4 3 5 4 4 2 4;} /* Style Definitions
*/ p.MsoNormal, li.MsoNormal, div.MsoNormal {margin:0in; margin-bottom:.0001pt; font-size:12.0pt; font-family:"Times New Roman","serif";} a:link, span.MsoHyperlink {mso-style-priority:99; color:blue; text-decoration:underline;} a:visited, span.MsoHyperlinkFollowed {mso-style-priority:99; color:purple; text-decoration:underline;} p {mso-style-priority:99; mso-margin-top-alt:auto; margin-right:0in; mso-margin-bottom-alt:auto; margin-left:0in; font-size:12.0pt; font-family:"Times New Roman","serif";} span.EmailStyle17 {mso-style-type:personal; font-family:"Arial","sans-serif"; color:windowtext;} span.EmailStyle19 {mso-style-type:personal-reply; font-family:"Calibri","sans-serif"; color:#1F497D;} .MsoChpDefault {mso-style-type:export-only; font-size:10.0pt;} @page Section1 {size:8.5in 11.0in; margin:1.0in 1.25in 1.0in 1.25in;} div.Section1 {page:Section1;} --> </STYLE> <DIV class=Section1> <DIV
class=MsoNormal><SPAN style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'">Cant get too much power. Do the 120. Also, consider replacing the bearing with the OS1.4 efi bearing and the engine will run great forever.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 11pt; COLOR: #1f497d; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></DIV> <DIV> <DIV style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none"> <DIV class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> nsrca-discussion-bounces@lists.nsrca.org [mailto:nsrca-discussion-bounces@lists.nsrca.org] <B>On Behalf Of
</B>Shoval Aviv-BAS036<BR><B>Sent:</B> Thursday, June 26, 2008 12:24 PM<BR><B>To:</B> nsrca-discussion@lists.nsrca.org<BR><B>Subject:</B> [NSRCA-discussion] OS 91FX or 120 AX for Focus sport<o:p></o:p></SPAN></DIV></DIV></DIV> <DIV class=MsoNormal><o:p> </o:p></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Hi All,<o:p></o:p></SPAN></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">I’m fairly new to pattern flying. I’m considering to buy the Focus sport and want to “keep it simple” with the engine. I know the Focus was design for YS 110 but for cost/ simplicity reasons i am considering the OS 91 FX or the OS 120 AX. In the OS web site they claim that the 120AX is 20% more power but when I compare efficiency it looks like the 91FX wins. Its 6% more efficient in power to Wight and 16% more in power to displacement. Am I missing something? Practical RPM misleading numbers? What would
be your recommendation?<o:p></o:p></SPAN></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></DIV> <TABLE class=MsoNormalTable style="MARGIN-LEFT: -1.15pt; WIDTH: 217pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=434 border=0> <TBODY> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"> <o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in;
BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">120AX<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">91FX<o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE:
10pt; FONT-FAMILY: 'Arial','sans-serif'">Displacement (Cu in)<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">1.2<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">0.91<o:p></o:p></SPAN></DIV></TD></TR> <TR
style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Weight (gr)<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">650<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none;
PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">550<o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Output (BHP@RPM)<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt;
PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">3.1@9000<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">2.8@15,000<o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid;
HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Cost<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">250<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt;
FONT-FAMILY: 'Arial','sans-serif'">200<o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"> <o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"> <o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt;
BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"> <o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">output/ weight<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in;
BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">0.004769<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">0.005090909<o:p></o:p></SPAN></DIV></TD></TR> <TR style="HEIGHT: 12.75pt"> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: windowtext 1pt solid; WIDTH: 100pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt"
vAlign=bottom noWrap width=200> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Output/ displacement<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 48pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=96> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">2.583333<o:p></o:p></SPAN></DIV></TD> <TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; WIDTH: 69pt; PADDING-TOP: 0in; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 12.75pt" vAlign=bottom noWrap width=138> <DIV class=MsoNormal style="TEXT-ALIGN: right" align=right><SPAN style="FONT-SIZE: 10pt;
FONT-FAMILY: 'Arial','sans-serif'">3.076923077<o:p></o:p></SPAN></DIV></TD></TR></TBODY></TABLE> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><o:p> </o:p></SPAN></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Best Regards,</SPAN><o:p></o:p></DIV> <DIV class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Aviv</SPAN><o:p></o:p></DIV> <DIV class=MsoNormal><o:p> </o:p></DIV> <DIV><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">No virus found in this incoming message.<BR>Checked by AVG.<BR>Version: 8.0.101 / Virus Database: 270.4.1/1521 - Release Date: 6/26/2008 11:20 AM</SPAN><o:p></o:p></DIV></DIV>_______________________________________________<BR>NSRCA-discussion mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR>