[From nobody Sun Nov 21 22:30:55 2004 From: "Karl G. Mueller" <kgamueller@rogers.com> To: <discussion@nsrca.org> Subject: Re: OS 1.60 Issues Date: Tue, 1 Jun 2004 14:24:53 +0000 Content-Type: Multipart/alternative; boundary="NextPart_Webmail_9m3u9jl4l_4116_1086190571_1" --NextPart_Webmail_9m3u9jl4l_4116_1086190571_1 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re O.S. 160FX issues. Engines with remote needle valves don't like to run with pumps or = regulators very well. I went through all of these setups and none were = satisfactory. This is the least troublesome setup. No pump or regulator or check = valve. I have my two engines running and pulling better than a DZ. The speed is actually too fast and I have to try to load them up with = more prop. At the moment I am using a 16.5 x 12 APC. A heavier prop might change = the=20 pipe length a little.=20 I'm using a 3" header extension between my header, which meassures about 6" straight back from the glow plug, to a Mac's 15cc quiet pipe.=20 I also did some mod's on the exhaust timing to allow for running on the pipe. A 4oz header (or hopper ) tank behind the firewall, which I use on = all=20 setups now, and the main tank just in front of the wing tube. Had to = move it down on the floor of the fuselage because of siphoning. Pressure line from = the high point of the pipe into the main tank. Good idle and midrange as well as = transition to high speed. Actually too much power. But than again too much is just enough!!! Karl G. Mueller kgamueller@rogers.com ----- Original Message -----=20 From: JonLowe@aol.com=20 To: discussion@nsrca.org=20 Sent: Tuesday, June 01, 2004 8:09 AM Subject: OS 1.60 Issues I have a Titan, OS 1.60, Mueller header, Greve pipe, Ironbay regulator = before the needle valve, OS #8 plug, running a 17x13 with 15%. Tank is = monted over the CG. Hyde mount. As near as I can measure around the = header, I am at the length that Piedmont recommends for these pipes on = their site. Good power at full throttle, but midrange stinks, wanting = to load up at 3/4 throttle, and not transition to full throttle. Also, = the mixture changes in the air, upright to inverted, going rich = inverted. I have the regulator mounted horizontally about 1.5 inches = from the needle, do I need to mount it fore-aft like a Cline? Do you = think I need to extend the length of the pipe? Any carb adjustment = tricks? I'm new to pipes, so any info will help. BTW, the original pressure check valve went bad before I even got to = fly it. I got a check valve (Foremost) from my local hobby shop that = seems to work, developing pressure and holding it well. Have others had = problems with the Ironbay valves? Thanks. Jon Lowe --NextPart_Webmail_9m3u9jl4l_4116_1086190571_1 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2800.1400" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: = #ffffff"=20 bgColor=3D#ffffff> <DIV> <DIV><FONT size=3D2>Re O.S. 160FX issues</FONT>.</DIV> <DIV><FONT size=3D2></FONT>&nbsp;</DIV> <DIV>Engines with remote needle valves don't like to run with pumps or=20 regulators very well. I went through all of these setups and none were=20 satisfactory.</DIV> <DIV>This is the least troublesome setup. No pump or regulator or check = <FONT=20 size=3D2>valve.</FONT></DIV> <DIV><FONT size=3D2>I have my two engines running and pulling better = than a=20 DZ.</FONT></DIV> <DIV><FONT size=3D2>The speed is actually too fast and I have to try to = load them=20 up with more prop.</FONT></DIV> <DIV><FONT size=3D2>At the moment I am using a 16.5 x 12 APC.&nbsp; A = heavier prop=20 might change the </FONT></DIV> <DIV><FONT size=3D2>pipe length </FONT><FONT size=3D2>a = little.&nbsp;</FONT></DIV> <DIV><FONT size=3D2>I'm using a 3" header extension&nbsp;between my = header, which=20 meassures</FONT></DIV> <DIV><FONT size=3D2>about 6" straight back from the glow plug,&nbsp;to a = Mac's=20 15cc quiet pipe. </FONT></DIV> <DIV><FONT size=3D2>I also did some mod's on the exhaust timing to allow = for=20 running on the</FONT></DIV> <DIV><FONT size=3D2>pipe. </FONT><FONT size=3D2>A 4oz </FONT><FONT = size=3D2>header (or=20 hopper ) tank behind the firewall, which I use on all </FONT></DIV> <DIV><FONT size=3D2>setups now, and the main </FONT><FONT size=3D2>tank = </FONT><FONT=20 size=3D2>just in front of the wing tube. Had to move it = down</FONT></DIV> <DIV><FONT size=3D2>on the floor of the fuselage </FONT><FONT = size=3D2>because of=20 siphoning. Pressure line from the high</FONT></DIV> <DIV><FONT size=3D2>point of the pipe into the main </FONT><FONT = size=3D2>tank. Good=20 idle and midrange as well as transition</FONT></DIV> <DIV><FONT size=3D2>to high speed. &nbsp;Actually too much </FONT><FONT=20 size=3D2>power.</FONT></DIV> <DIV><FONT size=3D2>But than again too much is just = enough!!!</FONT></DIV> <DIV>&nbsp;</DIV> <DIV>Karl G. Mueller<BR><A=20 href=3D"mailto:kgamueller@rogers.com">kgamueller@rogers.com</A><BR></DIV>= <DIV><FONT size=3D2></FONT>&nbsp;</DIV></DIV> <BLOCKQUOTE dir=3Dltr=20 style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; = BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px"> <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV> <DIV=20 style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: = black"><B>From:</B>=20 <A title=3DJonLowe@aol.com = href=3D"mailto:JonLowe@aol.com">JonLowe@aol.com</A>=20 </DIV> <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A = title=3Ddiscussion@nsrca.org=20 href=3D"mailto:discussion@nsrca.org">discussion@nsrca.org</A> </DIV> <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, June 01, 2004 = 8:09=20 AM</DIV> <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> OS 1.60 Issues</DIV> <DIV><BR></DIV> <DIV>I have a Titan, OS 1.60, Mueller header, Greve pipe, Ironbay = regulator=20 before the needle valve, OS #8 plug, running a 17x13 with = 15%.&nbsp;&nbsp;=20 Tank is monted over the CG.&nbsp; Hyde mount.&nbsp; As near as I can = measure=20 around the header, I am at the length that Piedmont recommends for = these pipes=20 on their site.&nbsp; Good power at full throttle, but midrange stinks, = wanting=20 to load up at 3/4 throttle, and not transition to full throttle.&nbsp; = Also,=20 the mixture changes in the air, upright to inverted, going rich=20 inverted.&nbsp; I have the regulator mounted horizontally about 1.5 = inches=20 from the needle, do I need to mount it fore-aft like a Cline?&nbsp; Do = you=20 think I need to extend the length of the pipe?&nbsp; Any carb = adjustment=20 tricks?&nbsp; I'm new to pipes, so any info will help.</DIV> <DIV>&nbsp;</DIV> <DIV>BTW, the original&nbsp; pressure check valve went bad before I = even got=20 to fly it.&nbsp; I got a check valve (Foremost)&nbsp;from my local = hobby=20 shop&nbsp;that seems to work, developing pressure and holding it = well.&nbsp;=20 Have others had problems with the Ironbay valves?</DIV> <DIV>&nbsp;</DIV> <DIV>Thanks.</DIV> <DIV>&nbsp;</DIV> <DIV><FONT size=3D2 PTSIZE=3D"10">Jon=20 Lowe<BR></FONT></DIV></BLOCKQUOTE></BODY></HTML> --NextPart_Webmail_9m3u9jl4l_4116_1086190571_1-- ]