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Who's had Flutter?

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Don G

Joined: 10 Jan 2006
Posts: 156
Location: Central Illinois

Posted: Sun Apr 19, 2009 1:11 pm Post subject: Who's had Flutter?

It seems to me, on this matter of control surface flutter, that one thing has been ignored. This list probably has representatives that collectively have an awful lot of "time in type". Probably the most significant representation of 601 experience in fact. So, from this collective experience I ask, Who has experienced in flight control surface Flutter??



I did a quick search...didn't see anyone mention or ask for a solution or advice on how to correct a problem they have had, as usually is the norm on these forums. I didn't go back to the first post, but far enough to make me think in has not been problem.



I did see several posted question about control surface balancing...but I saw none as a solution to an actual experienced problem, but only in the, "do you think we oughtta" area.



That being said, I have built 5 flying machines and I mass balanced ailerons on each but one, which was a weedhopper back in 1979...(didn't have em!) simply because I have always believed this was the proper way to build a control surface, and having experienced aileron flutter a time or 2 I didn't ever want to go thru it again. I will confess also that when the stick went wild in my hand I was operating the craft outside the design envelope. I also will note that of the other 4 I built..only my current KitFox Speedster came with aileron balance provisions, the others Did not, and I fabricated my own.

 Still I ask....has it been a real problem with any Zenith??? I cannot believe that the only times it has happened it resulted in a fatal crash,, if in fact it has ever.

So what say you gents????? IN the experience represented here, how many have had it happen?

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_________________
Don G.
Central Illinois
Kitfox IV Speedster
Luscombe 8A
RV9A

JohnDRead(at)aol.com
Guest

Posted: Sun Apr 19, 2009 9:27 pm Post subject: Who's had Flutter?

Hi Don;

             Have  you done it now!  You should know that this list is rarely given to logical  thought. All the armchair theorists out there will fill your mailbox with  vitriolic spam.

  

 Do not archive.

  

 John  Read

CH701 - Elbert CO - Jabiru 3300



Phone: 303-648-3261

Fax:  303-648-3262

Cell: 719-494-4567   

  In a message dated 4/19/2009 3:16:08 P.M. Mountain Daylight Time,  donghe(at)one-eleven.net writes:

  	  Quote: 	
		  -->    Zenith601-List message posted by: "Don G"    <donghe(at)one-eleven.net>



It seems to me, on this matter of control    surface flutter, that one thing has been ignored. This list probably has    representatives that collectively have an awful lot of "time in type".    Probably the most significant representation of 601 experience in fact. So,    from this collective experience I ask, Who has experienced in flight control    surface Flutter??



I did a quick search...didn't see anyone mention or    ask for a solution or advice on how to correct a problem they have had, as    usually is the norm on these forums. I didn't go back to the first post, but    far enough to make me think in has not been problem.



I did see several    posted question about control surface balancing...but I saw none as a solution    to an actual experienced problem, but only in the, "do you think we oughtta"    area.



That being said, I have built 5 flying machines and I mass    balanced ailerons on each but one, which was a weedhopper back in    1979...(didn't have em!) simply because I have always believed this was the    proper way to build a control surface, and having experienced aileron flutter    a time or 2 I didn't ever want to go thru it again. I will confess also that    when the stick went wild in my hand I was operating the craft outside the    design envelope. I also will note that of the other 4 I built..only my current    KitFox Speedster came with aileron balance provisions, the others Did not, and    I fabricated my own.

Still I ask....has it been a real problem with any    Zenith??? I cannot believe that the only times it has happened it resulted in    a fatal crash,, if in fact it has ever.

So what say you gents????? IN the    experience represented here, how many have had it    happen?



--------

Don G.

Central Illinois

Kitfox IV    Speedster

Luscombe 8A





Read this topic online    here:



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  [quote][b]

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cookwithgas

Joined: 06 Nov 2007
Posts: 159

Posted: Sat Apr 25, 2009 7:25 pm Post subject: Re: Who's had Flutter?

Scott Laughlin

Omaha, Nebraska



No flutter - 123 hours



flutter - 0 hours



Jeez!   I fell sorry for you guys building still and spending time on this forum.  When I was building, the big controversy was green vs. brown scotch-brite.  



I changed computers several months ago and lost the link to this list.  This evening I just spent a few hours reading all the posts and watching the videos and listening to webcasts, etc. and it looks like to me some of you guys shot yourselves in the foot by notifying the NTSB!  Are you serious????? I apologize in advance to those that did this thing - I'm sure you had good intentions but if ever you want to contact the government to save me from myself, please don't!   I promise not to use my lawn mower as a hedge trimmer or try to light a bonfire with gasoline for fear of the government banning the use of lawn mowers or the dispensing of gasoline into portable cans.  Stupid is as stupid does.  



If you have the gumption to build and fly one of these beautifully designed, docile-flying aircraft called the 601XL, (or if you have the good fortune to buy one already built) then do a thorough pre-flight which includes checking the aileron cables and go flying!  I try to do it once a week and still get a thrill out of it after a year of flying by myself with my new sport pilot license which I earned with an instructor in my 601XL.  



I probably won't be checking back here to see if anybody replies, so email me directly if you feel strongly about contacting me.  Meanwhile I'm going to concentrate on finding the time to fly and spend less time on this silly computer.  My email address is on my website that I haven't updated in a while.  



Happy flying,



Scott Laughlin

N5SL

601XL/Corvair

Omaha, Nebraska

P.S.  Put a BRS in your airplane if you are worried about magic flutter happening to a sound aircraft.  It's an easy installation.  Lord knows how mad some people will be if the NTSB mandates that all light aircraft install a BRS type system.

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reinkings(at)comcast.net
Guest

Posted: Sat Apr 25, 2009 10:46 pm Post subject: Who's had Flutter?

Yahoo! Â  Â This is what the doctor ordered: Â  a little humor and a tad of obvious.



Thanks buddy,

John R Reinking

Woodinville, WA



 [quote][b]

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