<!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 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR: #ffffff"
bgColor=#ffffff>
<DIV><STRONG>Bob:</STRONG></DIV>
<DIV> </DIV>
<DIV>If the mid-range is rich should the distance be increased or
decreased</DIV>
<DIV>to reduce the richness?</DIV>
<DIV> </DIV>
<DIV>Terry</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=rcaerobob@cox.net href="mailto:rcaerobob@cox.net">Bob Pastorello</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, June 20, 2004 10:52
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: o.s. 160 question</DIV>
<DIV><BR></DIV>
<DIV>I can only share my "cookbook", the results of ideas/suggestions from
many people...Gene Maurice, Matt Kebajian, Dave and Ron Lockhart, and many
others...but...the OS 1.60 is ABSOLUTELY viable, and reliable...detailed info
is on my website, but here's the short version.</DIV>
<DIV> 1. 15% fuel, synthetic is best</DIV>
<DIV> 2. OS 8 or A5 plug (A5 gives better midrange,
and a little bit on the top end)</DIV>
<DIV> 3. Perry Pump, VP-30, using crankcase pressure
from a backplate tap. Mounted on the firewall. Adjusted about 1/2
turn leaner than from factory, but adjust for optimal midrange on the
ground.</DIV>
<DIV> 4. "Wave Length" of the the tuned setup - I've
now used 4 different kinds of pipes, and the "ball park", for 8000-8100 is
about 24.5 inches, plug center, following header, down pipe to the reflector
baffle. On conventional pipes. The Mac's 1092, a great setup,
needs to be at 22 1/2, measured the same way, but it uses rings instead of
baffles.</DIV>
<DIV> 5. Current setup is the best I have - OS 1.60,
Cool Power 15%, A5 plug, Mueller header, AeroSlave Pre-production CF pipe, VP
30 pump, APC 15.75 x 12 (Lockhart Re-twist), turning about 8100, pipe is at
24.5", plug to baffle (following curve of header length) Needle is open
One Turn + 2 clicks richer from closed. Will idle all day, transitions
linearly, doesn't load up, and has beau coup power....LOTS...(ask anyone at KC
this weekend!!!)</DIV>
<DIV> ** NO ** midrange problems.</DIV>
<DIV> </DIV>
<DIV>Feel free to email direct for more info...</DIV>
<DIV><BR>Bob Pastorello<BR><A
href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A><BR><A
href="http://www.rcaerobats.net">www.rcaerobats.net</A></DIV>
<DIV> </DIV>
<DIV> </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=JonLowe@aol.com href="mailto:JonLowe@aol.com">JonLowe@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> ; <A
title=flyintexan@houston.rr.com
href="mailto:flyintexan@houston.rr.com">flyintexan@houston.rr.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, June 20, 2004 9:22
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: o.s. 160 question</DIV>
<DIV><BR></DIV>
<DIV>
<DIV>
<DIV>In a message dated 6/19/2004 8:04:34 PM Central Daylight Time, <A
href="mailto:flyintexan@houston.rr.com">flyintexan@houston.rr.com</A>
writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
face=Arial>I am running the OS in intermediate as well. I used the
iron bay with some<BR>success, until it locked open during a sequence,
flooding out the motor. My<BR>setup with the regulator and greve
pipe always ran rich in the midrange. It<BR>got better when I
lengthened the pipe, but not perfect. With that setup it<BR>flew the
outside loop o.k., but I always throttled up just before the
very<BR>bottom of the loop. As it would come up through mid range, a
bit of smoke,<BR>maybe a cough, and away we go.</FONT></BLOCKQUOTE></DIV>
<DIV>Thanks for the info. I too am running a Greve. I've tried
an Iron Bay regulator with a Cline one way valve after the IB vavel
failed, am unsatisfied with the midrange, and am ready to go to the
Perry pump. What is the length you are running on your Greve, from
the glowplug, around the header, to the end of the main body of the
pipe? What prop? I have no one around me running a similar
setup, so I'm looking for a "cookbook" formula that works.</DIV>
<DIV> </DIV>
<DIV>Thanks.</DIV></DIV>
<DIV> </DIV>
<DIV><FONT size=2 PTSIZE="10">Jon
Lowe<BR></FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>