<HTML><FONT FACE=arial,helvetica><FONT SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Gerald,<BR>
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My set-up is straight forward as follows:<BR>
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Webra 145R, black head, with the standard Macs header. Both purchased from Piedmont (Lee Davis)<BR>
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OS/Hatori tuned pipe for the OS 140 RX or EFI. 23 1/4" from the exhaust flange to the first baffle, straight line<BR>
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My own soft mount I described in the March K Factor. It is based on the HYDE mount, is all wood including the beams. Bob Pastorello has some of the drawings on his web site. I followed his drawings for the absorber portion. Mine differs in that the beams are glued to the front plate and a box is built around the case with balsa and lite-ply. A standard HYDE soft mount is a must if you don't make your own.<BR>
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I use a ply wood nose ring of my own design but any standard nose ring will do the job, as long as it fits<BR>
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Model is a ZN-Line kit, Alliance. Their construction technique includes foam sheeting on the Kevlar for stiffness and sound suppression. This simple technique is extremely effective. You will find that Lance VanNostrand's and Grey Fowler's (AeroSlave) offerings have a similar construction. Also, take a look at the new Temptation offered by Piedmont; Lee Davis describes a similar sandwich in the shell of their fuselages<BR>
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My firewall is 1/8: aircraft ply for the front face plus a 1/8" lite ply "U" shaped crutch behind the firewall, extending about 4" toward the canopy. It keeps the fuselage from drumming in this area just behind the engine.<BR>
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Fuel I use is a special blend of Cool Power heli and standard fuel, to 15% nitro and 19% thinner oil. I have the details on Ed Hartley's RCPattern page<BR>
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Props are: take your pick, the stealthiest is a 15.5x12 apc 4 blade. The model is practically inaudible and a little spooky to fly because it's too quiet. The rest are about the same 17x12, 16x14 std and N, 16.5x13 std, all apc's. The 16.5x13 was used nearly exclusively during early running. The engine turns anywhere from 7500 to 8000 r's depending on the prop. It will run faster but does not have to. Power to burn on the 45 deg up 1 1/2 snap or the figure 9 with 3/2 rolls.<BR>
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Should you decide on a similar set-up, please contribute your findings to Ed Hartley's page<BR>
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Matt Kebabjian<BR>
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In a message dated 9/19/2002 7:36:02 AM Eastern Daylight Time, emorydmd@earthlink.net writes:<BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">Subj:<B>Re: Webra Bragging </B><BR>
Date:9/19/2002 7:36:02 AM Eastern Daylight Time<BR>
From:<A HREF="mailto:emorydmd@earthlink.net">emorydmd@earthlink.net</A><BR>
Reply-to:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
To:<A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A><BR>
<I>Sent from the Internet </I><BR>
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Gerald,</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Matt's set-up is probably the most quiet I have ever heard. It makes almost no noise when it's flying. I had a chance to fly his Alliance and the Webra is a very strong engine. If my Tigers ever fail me, I think that would be a good choice.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">Emory.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">----- Original Message ----- <BR>
<B>From:</B> <A HREF="mailto:gw@gwair.com">GW</A> <BR>
<B>To:</B> <A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A> <BR>
<B>Sent:</B> Wednesday, September 18, 2002 9:32 PM<BR>
<B>Subject:</B> Re: Webra Bragging<BR>
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Mike,</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">I have very little personal experience with big 2S engines, but I witnessed yours and Emory Schroters <sp> 2S equipped planes this weekend at Huntsville , and was truly impressed with the lack of "noise" these planes made. Truly amazing.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">I believe it is a combination of many things that it took to make these 2 planes this quiet, not just a good muffler, or just a soft mount, or any one thing. A combo of all is what seems to be the ticket. Hope to accomplish this myself with my new T2K soon as well.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">If Matt's is quieter than yours and Emory's, then it must truly be a extremely quiet setup. </FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">I am assuming Matt is on the list, Matt? What is the setup of motor, motor mount,header pipe,muffler ,fuel,prop you have found to be to your liking?</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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Later,<BR>
GW<BR>
Gerald Williams<BR>
Webpage : <A HREF="http://www.gwair.com/">www.gwair.com</A><BR>
Email: <A HREF="mailto:gw@gwair.com">gw@gwair.com</A><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
<BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">----- Original Message ----- <BR>
<B>From:</B> <A HREF="mailto:kerlock@attbi.com">Mike Hester</A> <BR>
<B>To:</B> <A HREF="mailto:discussion@nsrca.org">discussion@nsrca.org</A> <BR>
<B>Sent:</B> Wednesday, September 18, 2002 10:15 PM<BR>
<B>Subject:</B> Re: Webra Bragging<BR>
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Ford, Chevy, OS, Webra, YS......</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">If it works and you understand it and can make it perform for you, it's your engine. If you're having a bad experience, it's probably worth trying something else.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">The OS, Webra and the new DZ are all capable engines in the right hands. For instance I can't make an OS run bad to save my life, but the only 4 stroke I ever owned tore up 3 times in 4 weeks. So I'm a 2 stroke guy =P Plus is it just me, or are some of the 2 strokes unbelieveably quiet? Mine purrs, but Matt Kebabjian's is practically in stealth mode. Technology has come a long way.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">I for one am just glad we have REAL alternatives in engine selection.</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0">-Mike Hester</FONT><FONT COLOR="#000000" style="BACKGROUND-COLOR: #ffffff" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BR>
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