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601 Aileron cable tension

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JAPhillipsGA(at)aol.com
Guest

Posted: Mon Nov 10, 2008 7:51 pm Post subject: 601 Aileron cable tension

Has the letter about wing/alieron flutter from AMD & Zac  been mentioned on the list?  Said to check aileron cable tension and the  rivets on the doubler for the rear spar and that we should not fly until these  were to standard. Seems as if they are pretty sure the loss of wing accidents  were from flutter. 



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  [quote][b]

hills(at)sunflower.com
Guest

Posted: Mon Nov 10, 2008 8:42 pm Post subject: 601 Aileron cable tension

Is the wing flutter problem just on XL’s or are the older 601HDS wings affected too?  

   

Roger  

   

   

   

         

  

From: owner-zenith-list-server(at)matronics.com [mailto:owner-zenith-list-server(at)matronics.com] On Behalf Of JAPhillipsGA(at)aol.com

 Sent: Monday, November 10, 2008 9:44 PM

 To: zenith-list(at)matronics.com

 Subject: 601 Aileron cable tension  

  

     

Has the letter about wing/alieron flutter from AMD & Zac been mentioned on the list?  Said to check aileron cable tension and the rivets on the doubler for the rear spar and that we should not fly until these were to standard. Seems as if they are pretty sure the loss of wing accidents were from flutter.   

  



 

         

  

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        [quote][b]

Terry Phillips

Joined: 11 Jan 2006
Posts: 346
Location: Corvallis, MT

Posted: Mon Nov 10, 2008 9:06 pm Post subject: 601 Aileron cable tension

Roger



 The only accident that I'm aware of involving HD type wings is the Bramley UK accident. The accident report gives the probable cause for that accident to be an over-stressed wing that apparently resulted from an abrupt climbing maneuver to avoid power lines. The accident report is the file G_YOXI.pdf in the ZBAG file section:



 http://groups.yahoo.com/group/ZBAG/files/



 There is no mention of flutter.



 Terry



 



 

 At 10:40 PM 11/10/2008 -0600, you wrote:



  	  Quote: 	
		  Is the wing flutter problem just on XL’s or are the older 601HDS wings affected too?

 

  

 

 Roger 	
 

 

 Terry Phillips  ZBAGer

 ttp44~at~rkymtn.net

 Corvallis MT

 601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons are done; working on the wings

 http://www.mykitlog.com/N47TP/     [quote][b]

_________________
Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Zenith 601XL/Jab 3300 slow build kit - Tail feathers done; working on the wings.

JAPhillipsGA(at)aol.com
Guest

Posted: Tue Nov 11, 2008 6:36 am Post subject: 601 Aileron cable tension

Rogar, the letter referred to 601 and 650 airplanes,  Bill



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larry(at)macsmachine.com
Guest

Posted: Tue Nov 11, 2008 7:40 am Post subject: 601 Aileron cable tension

Hi Roger,

I believe wing flutter is only suspected, but never confirmed on the XL.

The condition has never been reported on a HDS to my recollection. With

the thicker wing and section strength, you'd probably have to be in an 

extended

dive straight down to get flutter on the HDS.



Larry McFarland 601HDS at www.macsmachine.com



Roger & Lina Hill wrote:

 	  Quote: 	
		  

 Is the wing flutter problem just on XL’s or are the older 601HDS wings 

 affected too?



 Roger

leo(at)zuehlfield.com
Guest

Posted: Tue Nov 11, 2008 8:58 am Post subject: 601 Aileron cable tension

I dove my HDS to 160 MPH during phase 1 testing, 5 MPH increase at a 

time.  A non-event, other than a shorts change.

-- 

Leo Gates

N601Z - CH601HDS TDO

Rotax 912UL

LarryMcFarland wrote:

 	  Quote: 	

 Hi Roger,

 I believe wing flutter is only suspected, but never confirmed on the XL.

 The condition has never been reported on a HDS to my recollection. With

 the thicker wing and section strength, you'd probably have to be in an 

 extended

 dive straight down to get flutter on the HDS.

 Larry McFarland 601HDS at www.macsmachine.com

 Roger & Lina Hill wrote:

>

> Is the wing flutter problem just on XL’s or are the older 601HDS 

> wings affected too?

>

> Roger

>

passpat(at)aol.com
Guest

Posted: Tue Nov 11, 2008 9:48 am Post subject: 601 Aileron cable tension

WE HAVE A VETERN PILOT ON THE FIELD THAT HAS CONFIRMED FLUTTER AND LUCKLY GOT IT BACK UNDER CONTROL BEFORE ANY DAMAGE OCCURED AIRCRAFT WAS 601XL

 

 Pat

 

 

 --

frankroskind(at)HOTMAIL.C
Guest

Posted: Tue Nov 11, 2008 9:49 am Post subject: 601 Aileron cable tension

The shorts change and non-event seem inconsistent.  Did something scary happen?

  

 Do not archive



 	  Quote: 	
		   Date: Tue C 11 Nov 2008 10:54:25 -0600

 From: leo(at)zuehlfield.com

 To: zenith-list(at)matronics.com

 Subject: Re: 601 Aileron cable tension

 

 --> Zenith-List message posted by: Leo Gates <leo(at)zuehlfield.com>

 

 I dove my HDS to 160 MPH during phase 1 testing C 5 MPH increase at a 

 time. A non-event C other than a shorts change.

 -- 

 

 Leo Gates

 N601Z - CH601HDS TDO

 Rotax 912UL

 

 LarryMcFarland wrote:

 > --> Zenith-List message posted by: LarryMcFarland <larry(at)macsmachine.com>

 >

 >

 > Hi Roger C

 > I believe wing flutter is only suspected C but never confirmed on the XL.

 > The condition has never been reported on a HDS to my recollection. With

 > the thicker wing and section strength C you'd probably have to be in an 

 > extended

 > dive straight down to get flutter on the HDS.

 >

 > Larry McFarland 601HDS at www.macsmachine.com

 >

 > Roger & Lina Hill wrote:

 >>

 >> Is the wing flutter problem just on XL’s or are the older 601HDS 

 >> wings affected too?

 >>

 >> Roger

 &g=====================

 _=======

 

 

 


	


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passpat(at)aol.com
Guest

Posted: Tue Nov 11, 2008 10:36 am Post subject: 601 Aileron cable tension

--

leo(at)zuehlfield.com
Guest

Posted: Tue Nov 11, 2008 10:40 am Post subject: 601 Aileron cable tension

Just my over active imagination and pucker factor.



Frank Roskind wrote:

 	  Quote: 	
		   The shorts change and non-event seem inconsistent.  Did something 

 scary happen?

  

 Do not archive



 > Date: Tue, 11 Nov 2008 10:54:25 -0600

 > From: leo(at)zuehlfield.com

 > To: zenith-list(at)matronics.com

 > Subject: Re: 601 Aileron cable tension

 >

 > 

 >

 > I dove my HDS to 160 MPH during phase 1 testing, 5 MPH increase at a

 > time. A non-event, other than a shorts change.

 > --

 >

 > Leo Gates

 > N601Z - CH601HDS TDO

 > Rotax 912UL

 >

 > LarryMcFarland wrote:

 > > 

 <larry(at)macsmachine.com>

 > >

 > >

 > > Hi Roger,

 > > I believe wing flutter is only suspected, but never confirmed on 

 the XL.

 > > The condition has never been reported on a HDS to my recollection. 

 With

 > > the thicker wing and section strength, you'd probably have to be 

 in an

 > > extended

 > > dive straight down to get flutter on the HDS.

 > >

 > > Larry McFarland 601HDS at www.macsmachine.com

 > >

 > > Roger & Lina Hill wrote:

 > >>

 > >> Is the wing flutter problem just on XL’s or are the older 601HDS

 > >> wings affected too?

 > >>

 > >> Roger

 > &g=====================

 > _=======

 >

 >

 >

 ------------------------------------------------------------------------

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 *



 *


	


-- 

Leo Gates

N601Z - CH601HDS TDO

Rotax 912UL

notsew_evets(at)frontiern
Guest

Posted: Tue Nov 11, 2008 10:59 am Post subject: 601 Aileron cable tension

Pat , Which model Zenith do you fly  ???

  

 S.

 [quote]   ---

amyvega2005(at)earthlink.
Guest

Posted: Tue Nov 11, 2008 11:04 am Post subject: 601 Aileron cable tension

there still is not concrete evidence there is a flutter issue on any of the models.  The AD is an advisory,  on any of the aircraft and is recommending that people tension the cables AS PER THE PLANS YOU ARE SUPPOSED TO FOLLOW IN THE BUILD PROCESS (REFER TO PLANS)



Juan



--

notsew_evets(at)frontiern
Guest

Posted: Tue Nov 11, 2008 11:14 am Post subject: 601 Aileron cable tension

Aileron flutter is different from wing flutter.

I vote its been aileron cable tension that causes the problems.  Any 

unbalanced control surface will act unusual at speeds without the cables 

tight.  Look at the Piper J 3..

SW

---

amyvega2005(at)earthlink.
Guest

Posted: Tue Nov 11, 2008 1:58 pm Post subject: 601 Aileron cable tension

does not mean its adesign flaw, it just tells me the cables were not properly tightened.

Juan



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