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To: flyrotary@lancaironline.net
Subject: Engine Tuning
Date: Fri, 13 May 2011 17:35:10 -0400
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From: bktrub@aol.com
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Since the weather has been cooperating lately, I've had the opportunity to=
 put a few more hours on the airplane. On the ground, I can go from an idl=
e up to full throttle and the engine will be smooth. But when I take off,=
 it seems that as soon as I'm up a few hundred feet off the runway, I get=
 hellacious backfiring at full throttle. I can mitigate it a bit by thrott=
ling back to about 5100 rpm, and turning the mixture knob to near full ric=
h. It's getting to be a bit nerve wracking to take off thinking I've got=
 it smoothed out and then get a series of hand grenades going off under my=
 butt. I'm thinking that I'm still running too lean up at map address 106=
 or so. So, I go into the edit page and richen up the mixture around those=
 addresses. I think I'm creeping up on smooth full throttle running.

The good news is that my coolant runs at 175 degrees and oil at less- so=
 the cooling is more than effective, I just need to close up my air inlet=
 a bit or restrict the outflow.

Brian Trubee


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<font color=3D'black' size=3D'2' face=3D'arial'>
<div><br>
Since the weather has been cooperating lately, I've had the opportunity to=
 put a few more hours on the airplane. On the ground, I can go from an idl=
e up to full throttle and the engine will be smooth. But when I take off,=
 it seems that as soon as I'm up a few hundred feet off the runway, I get=
 hellacious backfiring at full throttle. I can mitigate it a bit by thrott=
ling back to about 5100 rpm, and turning the mixture knob to near full ric=
h. It's getting to be a bit nerve wracking to take off thinking I've got=
 it smoothed out and then get a series of hand grenades going off under my=
 butt. I'm thinking that I'm still running too lean up at map address 106=
 or so. So, I go into the edit page and richen up the mixture around those=
 addresses. I think I'm creeping up on smooth full throttle running.</div>


<div>&nbsp;</div>


<div>The good news is that my coolant runs at 175 degrees and oil at less-=
 so the cooling is more than effective, I just need to close up my air inl=
et a bit or restrict the outflow.</div>


<div>&nbsp;</div>


<div>Brian Trubee<br>
</div>


<div style=3D"CLEAR: both"></div>
</font>

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