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<DIV><FONT face=Arial size=2>Set up that is working nice for me is Aeroslave
pipe, 22% nitro S&W, OS-F, 15.75 x 10 3blade.</FONT></DIV>
<DIV><FONT face=Arial size=2>Lean idle setting.</FONT></DIV>
<DIV><FONT face=Arial size=2>Ron Lockhart</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rharden1@cox.net href="mailto:rharden1@cox.net">Bob Harden</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, February 17, 2006 9:26
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [NSRCA-discussion] OS 1.40 RX
mid range loading up problem</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Hello All,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I need some of your expertise. I am having
trouble with my OS 1.40 RX loading up in mid range. The engine has
5 flights and approx 2 gallons of fuel through it. I am
using an APC 16 x 14 prop, OS T-6010 Tuned Silencer, tried the A5,
#8 and type F plugs (no difference), Magnum fuel 10% nitro with caster/synth
blend, pipe set for 8000 rpm, and using the short needle valve.
The low end idle adjust screw is adjusted all the way to the lean (all the way
in) which is necessary to idle smoothly. Transition quickly from idle to
max throttle isn't too bad but slower than I would like. If
I set the throttle at 30% to 50% it loads up and and slows in
RPM. In transition from mid to high throttle
the engine vibrates and burbles for 3 -4 seconds before
it clears and comes on the pipe, it has even stopped running a few
times. I have read that some folks use the longer needle valve and
higher nitro to minimize this problem, but I haven't tried that yet.
From those of you who have experience with this, what is going on,
and what are my options?</FONT></DIV></FONT></DIV>
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