Mailing List flyrotary@lancaironline.net Message #18772
From: John Slade <sladerj@bellsouth.net>
Subject: RE: [FlyRotary] Re: SAG Report
Date: Mon, 14 Mar 2005 22:19:41 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Speaking of SAG, I had a strange experience during today's flight which might be the opposite of SAG.
 
Everything seemed normal. I was boosting about 38 MAP at 4500 rpm and 5000'. I was gently adding a little throttle to increase speed for another ASI calibration when I felt a surge of acceleration way beyond what I'd expect for the minor throttle adjustment I'd made. This was literally a shove in the back. It lasted maybe 2 seconds, then the engine carried on at the new power level. RPM jumped up a couple of hundred. I glanced down at the MAP. It had dropped to 34. My best guess is that I'd been running with a gummed up plug which suddenly cleared and gave me added power.
 
I'd appreciate any opinions on this.
Now if I could just make it happen again - and again.....
 
John (getting relaxed enough to test the airframe)
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