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Darwin, Don't count on airframe time being any predictor for aileron flutter. Simply do the standard aileron play test as specified in the service manual. If it meets that standard I don't think you'll get flutter. Ed Burkhead http://edburkhead.com/ [EMAIL PROTECTED] -----Original Message----- From: Darwin Girdauckis [mailto:[EMAIL PROTECTED] Sent: Thursday, January 09, 2003 7:48 PM To: Hartmut; [email protected]; 'Coupetech' Subject: Re: [COUPERS-FLYIN] flutter ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- Hartmut! How many hours flying time on your coupe when this flutter started & what serial #? Our 415c now has 1590 hrs since new, no sighn of flutter but we will be getting a dynamic balance job done soon as there is a fair amount of engine vibration. We already put new engine mounts in. Thanks Darwin Hartmut wrote: > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > Hi list. > > I had flutter all last flying season. It started occasionally and got > worse over time. > It's like Ed describes it. The immediate remedy is intuitive. You start > steering and the flutter disappears. > My flutter started at speeds above 110 MPH. > I knew it's the play in the controls. I just did not know where exactly. > > Now, after pulling the wings for the Center section inspection (yes, we > found corrosion), I found ALL!!!! elements of the right aileron control > worn. > I replaced all rod ends and also the expensive bearings in the outer > aileron bellcrank. > In case I ever get the plane back into flying condition I will see if > the flutter is gone. > But I am pretty sure of it. By the way. I had the flutter at almost all > of my last flights and got pretty much used to the annoying washboard > feeling. I had time to experiment a bit and can assure that the wing > does not fall off the moment you're experiencing it , nor does the > aileron. So no panic, do some gentle turns and slow down. That's all to > be out of it. > > Hartmut > > Ed Burkhead wrote: > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > > > > > > ----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- > > > > > > > > JMILLBYZ asked: > > > > > anyone ever experienced aileron flutter? > > > > Yep.I did once when I was doing a gentle dive to approach Vne.About > > 135 or a little bit more, it felt like I had hit a washboard road.I > > figured it out in only about one second and immediately started a > > series of left/right turns to load the ailerons and the flutter > > immediately stopped. > > > > A number of people have told me I was very lucky I didnít have the > > aileron separate from the plane.This is true.I canít tell you how I > > figured it out and did the correct thing so quickly ? maybe I had > > pre-loaded the solution in the back of my mind. > > > > Upon arrival home, we found there was way too much play in the aileron > > system.We tightened it up with washers and when I had a chance ($), I > > replaced all the rod ends.Come to find out the rod ends arenít that > > expensive and I should have replaced them much sooner. > > > > Ed Burkhead > > > > http://edburkhead.com/ > > > > [EMAIL PROTECTED] > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > Sent: Thursday, January 09, 2003 4:13 PM > > To: [email protected] > > Subject: [COUPERS-FLYIN] flutter > > > > anyone ever experienced aileron flutter? > > > > ========================================================================== == == > > To leave this forum go to: http://ercoupers.com/lists.htm > > > > > > > > > > ========================================================================== == == > > To leave this forum go to: http://ercoupers.com/lists.htm > > > > > > > > > > ========================================================================== == == > To leave this forum go to: http://ercoupers.com/lists.htm ========================================================================== == == To leave this forum go to: http://ercoupers.com/lists.htm ========================================================================== ==== To leave this forum go to: http://ercoupers.com/lists.htm
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