<DIV>Thanks Gene Maurice,</DIV>
<DIV>Do you happen to know the r-bearing specs for the OS 1.40?</DIV>
<DIV>Rodney<BR><BR><B><I>Gene Maurice <gene.maurice@comcast.net></I></B> wrote:</DIV>
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<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Try http://www.afcbearings.com/<o:p></o:p></SPAN></FONT></P>
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<P class=MsoAutoSig><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PersonName w:st="on"><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy">Gene Maurice</SPAN></FONT></st1:PersonName><FONT color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy"><o:p></o:p></SPAN></FONT></P>
<P class=MsoAutoSig><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy">gene.maurice@comcast.net<o:p></o:p></SPAN></FONT></P>
<P class=MsoAutoSig><st1:place w:st="on"><st1:City w:st="on"><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy">Plano</SPAN></FONT></st1:City><FONT color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy">, <st1:State w:st="on">TX</st1:State></SPAN></FONT></st1:place><FONT color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy"><o:p></o:p></SPAN></FONT></P>
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<P class=MsoAutoSig><FONT face="Times New Roman" color=navy size=2><SPAN style="FONT-SIZE: 11pt; COLOR: navy">AMA 3408<o:p></o:p></SPAN></FONT></P></DIV>
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<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Rodney Tanner<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Thursday, February 05, 2004 4:25 PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <st1:PersonName w:st="on">discussion@nsrca.org</st1:PersonName><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: Tuning OS's</SPAN></FONT><o:p></o:p></P></DIV>
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<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Eric, <o:p></o:p></SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Where can you obtain stainless steel bearings for the OS 1.40 RX?<o:p></o:p></SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Thanks<o:p></o:p></SPAN></FONT></P></DIV>
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<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Rodney<BR><BR><B><I><SPAN style="FONT-WEIGHT: bold; FONT-STYLE: italic">"Henderson,Eric" <Eric.Henderson@gartner.com></SPAN></I></B> wrote:<o:p></o:p></SPAN></FONT></P></DIV>
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<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">My time with the OS 1.40RX goes back to 1997/8 when I bought four of them and a tuned pipe from a small English hobby shop, on one of my trips to the UK. Although I don't own the motors anymore I know where they are. :-) The <st1:country-region w:st="on"><st1:place w:st="on">UK</st1:place></st1:country-region> customs had a fit when they saw the pipe on their x-ray machine... Just made the plane in time...</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">The first modification was a new carb-jet that OS provided FOC to cure a mid-range gurgling problem. Back then, the motor was a novelty and not taken seriously, even though it pulled my old Hydeout vertically out-a-sight. Things went quiet for a while and around the year 2000 there was an upsurge of interest. The EFI caught a lot of attention and then the experimenters started working on their 2-cycles of all types. The second modification was to fit stainless steel bearings :-)</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">The price of the OS 1.40 EFI made us look at the RX again. Dave Shadel came out with a piston and liner. Fuel was modified to meet the spec's that OS had always listed. Coolpower was always around 15/17-18 and often proved to be the best fuel for the average pattern OS 2-c pundit. The OS 1.40 RX had a different shaft and carb by then. The new carb had a bigger throat and the shaft had a narrower mouth. Never got to try an old shaft with a new model carb. Did cut a 1.40 two plug head that was never tested. Found out that one OS "F" did the job with less plug-fuss.</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">The Shadel liner is not a must but does give more power. I like it because it is an aftermarket add-on that anyone could fit. Another aftermarket is the OS mixture carb. I first heard of this from Jeff Carrish. I then got to fly one on Dixie-Chicks-Earl's Temptation. The Webra MC testing got me interested and then the flight-experience convinced me that this carb (Approx. $79) makes a big difference. You have five points on the carb and seven on a JR 10X. You can adjust the carb to perfectly match the behavior of almost any pipe. With the OS Hatori and this carb on a 1.40RX it was just like flying the 1.40 EFI. ( This motor BTW still had the std liner etc.)</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">I was so impressed with the tunability of this carb that I am fitting one to my 1.60 as soon as it arrives in the mail - checking for it every day...!!</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">As much as I like to only do easy after market mods, I did break down with the OS 1,60. The 1.40RX pump was so good that I grafted one to my motor and ran it last season. The 1.60 Carb worked just fine and I am told that the 1.40 RX carb works even better, at least in <st1:country-region w:st="on">Norway</st1:country-region> or <st1:country-region w:st="on"><st1:place w:st="on">Sweden</st1:place></st1:country-region>? (They all have 15 mm openings in the crankcase). An OS 1.60 FX w/pump and an OS mix carb should be pure fun to play with and of course, fly!</SPAN></FONT><o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">I still hope that OS will come out with a rear exhaust 1.60, (or more), w/pump.</SPAN></FONT> <o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Is winter over yet?</SPAN></FONT> <o:p></o:p></P>
<P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Regards,<BR><BR>Eric.</SPAN></FONT> <o:p></o:p></P></BLOCKQUOTE>
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