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<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></BODY></HTML>