Bob; The vibration was there when I first flew the airplane. I did a prepurchase inspection for the owner, which included a compression check. The engine was overhauled by Precision Engines in Miami, FL over two years ago. When I looked under the cowl, I found the exhaust pipes clamped directly to the engine mounts, so I figured that was the problem. Proper support reduced the problem, but you all are right, it is in an Alon. I have an O-200 in my Coupe, and it does not vibrate at any certain RPM range, so I figured there was something drastically wrong with this one. >From what you all are saying so far, it sounds like my application of a yellow arc from 1800 to 2150 was the right answer. Yup, Jolly, the compression is good, however, I am suspect somewhat of the
engine overhaul because I found all the ring gaps on the bottom of the piston on # 3 cylinder. If those experts did that, I wonder what else they may have done wrong. Warren, are you saying that maybe I need to loosen the engine mounts a tad? Thanks everyone. Lynn Nelsen __________________________________________________________________________ ______ To unsubscribe from this list please send mailto:[EMAIL PROTECTED] _________________________________________________________ Enlighten your in-box. http://www.topica.com/t/15
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