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check your rudder bearing

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fprobst(at)HOTMAIL.COM
Guest

Posted: Mon Aug 17, 2009 7:44 pm Post subject: check your rudder bearing

The other day on my preflight I noticed a significant amount of play in the top rudder attach point of my 601.  Then I was at a fly in over the weekend with several 601's and they all had some play.  One was really bad and the rest had quite a bit of play too.  The hinge is just a bushing running in aluminium.  Mine has worn in just 100 hours.

  

 Has anyone come up with a better bearing idea?

  

 Thanks 

  

 Frank Probst

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JohnDRead(at)aol.com
Guest

Posted: Mon Aug 17, 2009 8:12 pm Post subject: check your rudder bearing

Hi Frank;

             I  did not like the steel in aluminum bearing design so I made the following  redesign of all of the various pivot designs on my CH701. I did submit them to  the factory who commented that they did not see any problems with the designs. I  have attached the Rudder Pivot redesigns drawings. The advantage of the designs  is that the existing 4130 bushings are running in "Oilite" type bearings and are  many times longer than the original Zenith designs.

  

 John  Read

CH701 - Elbert CO - Jabiru 3300



Phone: 303-648-3261

Fax:  303-648-3262

Cell: 719-494-4567   

  In a message dated 8/17/2009 9:45:31 P.M. Mountain Daylight Time,  fprobst(at)HOTMAIL.COM writes:

  	  Quote: 	
		  The    other day on my preflight I noticed a significant amount of play in the    top rudder attach point of my 601.  Then I was at a fly in over the    weekend with several 601's and they all had some play.  One was really    bad and the rest had quite a bit of play too.  The hinge is just a    bushing running in aluminium.  Mine has worn in just 100    hours.

 

Has anyone come up with a better bearing    idea?

 

Thanks 

 

Frank Probst



      Stay on top of things, check email from other accounts! Check it out.  	  Quote: 	
		  



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tp://www.matronics.com/contribution">http://www.matronics.com/contribution

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larry(at)macsmachine.com
Guest

Posted: Tue Aug 18, 2009 5:25 am Post subject: check your rudder bearing

Frank,

I had the same issue last annual inspection and found the pin was not 

snug on the bushing ends. I made another bushing just a tad longer and 

it solved the problem.

The bushing has to be a tight fit between the angles or it will allow 

motion to tear up the aluminum. I also added a little white lithium 

grease on assembly.



Larry McFarland 601HDS at www.macsmachine.com



Frank Probst wrote:

 	  Quote: 	
		   The other day on my preflight I noticed a significant amount of play 

 in the top rudder attach point of my 601.  Then I was at a fly in over 

 the weekend with several 601's and they all had some play.  One was 

 really bad and the rest had quite a bit of play too.  The hinge is 

 just a bushing running in aluminium.  Mine has worn in just 100 hours.

  

 Has anyone come up with a better bearing idea?

  

 Thanks

  

 Frank Probst



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

 Stay on top of things, check email from other accounts! Check it out. 

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ggower_99(at)yahoo.com
Guest

Posted: Thu Aug 27, 2009 8:14 am Post subject: check your rudder bearing

A drop of oil every once in a while...  At least every engine service.

 I aply a drop of oil in all moving parts everytime I wash the airplane.. 

  

 In harbor freight they sell a little one for less than 3 dls

 http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=1106

  

 Every flying day, with the preflight, at least I wash the widshield with plenty of water (avoid scratches) and clean the leading edges with rag and water.

  

 All airplanes need a little love and care...

  

 Saludos

 Gary Gower

 701 912S    250 hrs

 building 601XL  Jab 3300



--- On Mon, 8/17/09, Frank Probst <fprobst(at)HOTMAIL.COM> wrote:



  	  Quote: 	
		  

From: Frank Probst <fprobst(at)HOTMAIL.COM>

Subject: check your rudder bearing

To: zenith-list(at)matronics.com

Date: Monday, August 17, 2009, 11:43 PM



   #yiv1859061757 .hmmessage P { margin:0px;padding:0px;} #yiv1859061757 { font-size:10pt;font-family:Verdana;}  The other day on my preflight I noticed a significant amount of play in the top rudder attach point of my 601.  Then I was at a fly in over the weekend with several 601's and they all had some play.  One was really bad and the rest had quite a bit of play too.  The hinge is just a bushing running in aluminium.  Mine has worn in just 100 hours.

 

Has anyone come up with a better bearing idea?

 

Thanks 

 

Frank Probst



  Stay on top of things, check email from other accounts! Check it out.  	  Quote: 	
		  



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    start: 0000-00-00 end: 0000-00-00        [quote][b]

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jaybannist(at)cs.com
Guest

Posted: Thu Aug 27, 2009 10:19 am Post subject: check your rudder bearing

Gary,

 

 I have been cautioned to avoid  using oil on external control hinges and pivot points.  The objection is that the oil will attract dust, which will accelerate wear.  I have been advised to use the white powder lubricant made for locks.

 

 Jay Bannister  

 

   

 

   

 

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