Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Nose wheel shimmy

Matronics Email Lists Forum Index -> Lightning-List

View previous topic :: View next topic

Author Message

N1BZRich(at)AOL.COM
Guest

Posted: Mon May 31, 2010 7:42 pm Post subject: Nose wheel shimmy

If you suspect a nose wheel shimmy, there might be  an easy fix by just tightening the bolts that hold the nylon blocks together  around the nose gear leg.  Sometimes, that is all it takes.   If  that does not work, probably then next step is to disassemble the unit so that  you can sand a very small amount off the nylon blocks where they fit  together.  By doing this they will then be able clamp a little harder on  the nose gear leg.  

     To check the nose wheel for proper movement,  have someone raise the nose wheel by pushing down on the tail.  You should  be able to move the nose wheel assembly by hand, but it should resist - not be  too easy to move from side to side. 

      If you suspect a nose wheel shimmy (I can  tell it by feeling it in the rudder pedals), raise the nose as mentioned above  and see how easy it is to move by hand.  Tighten it some, by the first  method mentioned above, and then recheck to see if it is now harder to  move.  Then test fly to see if you have a fix.  If not, then dissemble  the nose wheel and sand some off the nylon blocks where they fit together as  mentioned above.  

 Hope this helps.

 Buz

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

N1BZRich(at)aol.com
Guest

Posted: Mon May 31, 2010 7:49 pm Post subject: Nose wheel shimmy

Reference my previous email on nose wheel shimmy.  Scroll on down  below the message for a photo of the nose wheel assembly.

 Buz

  

  In a message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time,  N1BZRich(at)AOL.COM writes:

  	  Quote: 	
		      

       If you suspect a nose wheel shimmy, there might    be an easy fix by just tightening the bolts that hold the nylon blocks    together around the nose gear leg.  Sometimes, that is all it    takes.   If that does not work, probably then next step is to    disassemble the unit so that you can sand a very small amount off the nylon    blocks where they fit together.  By doing this they will then be able    clamp a little harder on the nose gear leg.  

       To check the nose wheel for proper movement,    have someone raise the nose wheel by pushing down on the tail.  You    should be able to move the nose wheel assembly by hand, but it should resist -    not be too easy to move from side to side. 

        If you suspect a nose wheel shimmy (I can    tell it by feeling it in the rudder pedals), raise the nose as mentioned above    and see how easy it is to move by hand.  Tighten it some, by the first    method mentioned above, and then recheck to see if it is now harder    to move.  Then test fly to see if you have a fix.  If not, then    dissemble the nose wheel and sand some off the nylon blocks where they fit    together as mentioned above.  

   Hope this helps.

   Buz

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

landjridge(at)775.net
Guest

Posted: Mon May 31, 2010 9:05 pm Post subject: Nose wheel shimmy

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

FamilyGage(at)aol.com
Guest

Posted: Tue Jun 01, 2010 9:25 am Post subject: Nose wheel shimmy

Buz:

 Thanks, I plan to use your suggestion today.

 My Best,

 Ray Gage

  

  In a message dated 5/31/2010 11:49:31 P.M. Eastern Daylight Time,  N1BZRich(at)aol.com writes:

  	  Quote: 	
		     Reference my previous email on nose wheel shimmy.  Scroll on down    below the message for a photo of the nose wheel assembly.

   Buz

    

      In a message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time,    N1BZRich(at)AOL.COM writes:

    	  Quote: 	
		        

         If you suspect a nose wheel shimmy, there might      be an easy fix by just tightening the bolts that hold the nylon blocks      together around the nose gear leg.  Sometimes, that is all it      takes.   If that does not work, probably then next step is to      disassemble the unit so that you can sand a very small amount off the nylon      blocks where they fit together.  By doing this they will then be able      clamp a little harder on the nose gear leg.  

         To check the nose wheel for proper      movement, have someone raise the nose wheel by pushing down on the      tail.  You should be able to move the nose wheel assembly by hand, but      it should resist - not be too easy to move from side to side. 

          If you suspect a nose wheel shimmy (I can      tell it by feeling it in the rudder pedals), raise the nose as mentioned      above and see how easy it is to move by hand.  Tighten it some, by the      first method mentioned above, and then recheck to see if it is now      harder to move.  Then test fly to see if you have a fix.  If not,      then dissemble the nose wheel and sand some off the nylon blocks where they      fit together as mentioned above.  

     Hope this helps.

     Buz

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

wampam

Joined: 20 Oct 2008
Posts: 49

Posted: Tue Jun 01, 2010 9:56 am Post subject: Nose wheel shimmy

I had/have a similar problem.  I initially tightened the bolts on the block and reduced the tire pressure to about 25lbs.  The shimmy got significantly worse.  After loosening the bolts and leaving the tire pressure unchanged, the shimming was much less but still noticeable.  However, I did not like the idea of having these bolts so loose.  I then placed shims (barrowed an empty beer can from my hanger neighbor) between the blocks until I was able to move the wheel with about 10lbs of force and fully tighten the bolts.  I hope to give this a try this weekend.  

   

Walt M.  

N881WP  

       

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

 Sent: Tuesday, June 01, 2010 10:24 AM

 To: lightning-list(at)matronics.com

 Subject: Re: Nose wheel shimmy  

  

  

     

Buz:  

    

Thanks, I plan to use your suggestion today.  

    

My Best,  

    

Ray Gage  

    

   

      

In a message dated 5/31/2010 11:49:31 P.M. Eastern Daylight Time, N1BZRich(at)aol.com writes:  

   	  Quote: 	
		      

Reference my previous email on nose wheel shimmy.  Scroll on down below the message for a photo of the nose wheel assembly.  

    

Buz  

    

   

      

In a message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time, N1BZRich(at)AOL.COM writes:  

   	  Quote: 	
		      

   

    

    If you suspect a nose wheel shimmy, there might be an easy fix by just tightening the bolts that hold the nylon blocks together around the nose gear leg.  Sometimes, that is all it takes.   If that does not work, probably then next step is to disassemble the unit so that you can sand a very small amount off the nylon blocks where they fit together.  By doing this they will then be able clamp a little harder on the nose gear leg.    

    

    To check the nose wheel for proper movement, have someone raise the nose wheel by pushing down on the tail.  You should be able to move the nose wheel assembly by hand, but it should resist - not be too easy to move from side to side.   

    

     If you suspect a nose wheel shimmy (I can tell it by feeling it in the rudder pedals), raise the nose as mentioned above and see how easy it is to move by hand.  Tighten it some, by the first method mentioned above, and then recheck to see if it is now harder to move.  Then test fly to see if you have a fix.  If not, then dissemble the nose wheel and sand some off the nylon blocks where they fit together as mentioned above.    

    

Hope this helps.  

    

Buz      

    

   

    

   

    

   

    

   

    

   

    

   

    

                     [img]cid:image001.jpg(at)01CB0177.3D778490[/img]  

    

   

  	
  

  	
  

  

   

 

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

This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. 

  

Thank you for your cooperation.

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

n45bm(at)yahoo.com
Guest

Posted: Tue Jun 01, 2010 12:24 pm Post subject: Nose wheel shimmy

Is it possible that the entire nose wheel fork is vibrating or twisting, not just the wheel fork, causing wheel shimmy. Hope I'm not stirring the pot too hard. My 2 cents worth.

Bernardo

n45bm



--- On Tue, 6/1/10, Mefford, Walt <walt.mefford(at)garmin.com> wrote:

 	  Quote: 	
		  

From: Mefford, Walt <walt.mefford(at)garmin.com>

Subject: RE: Nose wheel shimmy

To: lightning-list(at)matronics.com

Date: Tuesday, June 1, 2010, 12:55 PM



             

    

I had/have a similar problem.  I initially tightened the bolts on the block and reduced the tire pressure to about 25lbs.  The shimmy got significantly worse.  After loosening the bolts and leaving the tire pressure unchanged, the shimming was much less but still noticeable.  However, I did not like the idea of having these bolts so loose.  I then placed shims (barrowed an empty beer can from my hanger neighbor) between the blocks until I was able to move the wheel with about 10lbs of force and fully tighten the bolts.  I hope to give this a try this weekend.   

     

Walt M.   

N881WP   

         

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

 Sent: Tuesday, June 01, 2010 10:24 AM

 To: lightning-list(at)matronics.com

 Subject: Re: Lightning-List: Nose wheel shimmy   

  

  

       

Buz:   

    

Thanks, I plan to use your suggestion today.   

    

My Best,   

    

Ray Gage   

    

    

      

In a message dated 5/31/2010 11:49:31 P.M. Eastern Daylight Time, N1BZRich(at)aol.com writes:   

   	  Quote: 	
		      

Reference my previous email on nose wheel shimmy.  Scroll on down below the message for a photo of the nose wheel assembly.   

    

Buz   

    

    

      

In a message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time, N1BZRich(at)AOL.COM writes:   

   	  Quote: 	
		      

    

    

    If you suspect a nose wheel shimmy, there might be an easy fix by just tightening the bolts that hold the nylon blocks together around the nose gear leg.  Sometimes, that is all it takes.   If that does not work, probably then next step is to disassemble the unit so that you can sand a very small amount off the nylon blocks where they fit together.  By doing this they will then be able clamp a little harder on the nose gear leg.     

    

    To check the nose wheel for proper movement, have someone raise the nose wheel by pushing down on the tail.  You should be able to move the nose wheel assembly by hand, but it should resist - not be too easy to move from side to side.    

    

     If you suspect a nose wheel shimmy (I can tell it by feeling it in the rudder pedals), raise the nose as mentioned above and see how easy it is to move by hand.  Tighten it some, by the first method mentioned above, and then recheck to see if it is now harder to move.  Then test fly to see if you have a fix.  If not, then dissemble the nose wheel and sand some off the nylon blocks where they fit together as mentioned above.     

    

Hope this helps.   

    

Buz       

    

    

    

    

    

    

    

    

    

    

    

    

    

                     [img]cid:1.45459248(at)web82701.mail.mud.yahoo.com[/img]   

    

    

  	
  

  	
  

  

   

 

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

This e-mail and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. 

  

Thank you for your cooperation.

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

FamilyGage(at)AOL.COM
Guest

Posted: Tue Jun 01, 2010 12:39 pm Post subject: Nose wheel shimmy

Thanks Walt:

 Will attempt the fix from Buz tomorrow and see what his ideas may improve  the situation.  I will post should I have any luck.

 My Best,

 Ray Gage

  

  In a message dated 6/1/2010 1:57:20 P.M. Eastern Daylight Time,  walt.mefford(at)garmin.com writes:

  	  Quote: 	
		     

I    had/have a similar problem.  I initially tightened the bolts on the block    and reduced the tire pressure to about 25lbs.  The shimmy got    significantly worse.  After loosening the bolts and leaving the tire    pressure unchanged, the shimming was much less but still noticeable.     However, I did not like the idea of having these bolts so loose.  I then    placed shims (barrowed an empty beer can from my hanger neighbor) between the    blocks until I was able to move the wheel with about 10lbs of force and fully    tighten the bolts.  I hope to give this a try this    weekend.   

 	


  [quote][b]

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

wampam

Joined: 20 Oct 2008
Posts: 49

Posted: Tue Jun 01, 2010 12:41 pm Post subject: Nose wheel shimmy

I agree.  This a very complex problem.  Tire type, tire pressure, flexing of the fuselage, length of the landing gear and many other factors can contribute such as the runway surface and the friction between the tire.  The factors can be different even for the same make and model of aircraft and one solution may not work for all.  A difficult problem even today with commercial aircraft.  

   

Walt M.  

N881WP  

     

From: owner-lightning-list-server(at)matronics.com [mailto:owner-lightning-list-server(at)matronics.com] On Behalf Of Bernard Melendez, Jr.

 Sent: Tuesday, June 01, 2010 1:19 PM

 To: lightning-list(at)matronics.com

 Subject: RE: Nose wheel shimmy  

  

           

Is it possible that the entire nose wheel fork is   vibrating or twisting, not just the wheel fork, causing wheel shimmy. Hope   I'm not stirring the pot too hard. My 2 cents worth.

   Bernardo

   n45bm

   

   --- On Tue, 6/1/10, Mefford, Walt <walt.mefford(at)garmin.com>   wrote:   



   From: Mefford, Walt <walt.mefford(at)garmin.com>

   Subject: RE: Nose wheel shimmy

   To: lightning-list(at)matronics.com

   Date: Tuesday, June 1, 2010, 12:55 PM         

I   had/have a similar problem.  I initially tightened the bolts on the   block and reduced the tire pressure to about 25lbs.  The shimmy got   significantly worse.  After loosening the bolts and leaving the tire   pressure unchanged, the shimming was much less but still noticeable.    However, I did not like the idea of having these bolts so loose.  I then   placed shims (barrowed an empty beer can from my hanger neighbor) between the   blocks until I was able to move the wheel with about 10lbs of force and fully   tighten the bolts.  I hope to give this a try this weekend.   

    

Walt   M.   

N881WP   

          

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

   Sent: Tuesday, June 01, 2010 10:24 AM

   To: lightning-list(at)matronics.com

   Subject: Re: Nose wheel shimmy   

   

   

       

Buz:   

      

Thanks,   I plan to use your suggestion today.   

      

My   Best,   

      

Ray   Gage   

      

    

         

In a   message dated 5/31/2010 11:49:31 P.M. Eastern Daylight Time, N1BZRich(at)aol.com   writes:   

    	  Quote: 	
		        

Reference   my previous email on nose wheel shimmy.  Scroll on down below the   message for a photo of the nose wheel assembly.   

      

Buz   

      

    

         

In a   message dated 5/31/2010 11:42:36 P.M. Eastern Daylight Time, N1BZRich(at)AOL.COM   writes:   

    	  Quote: 	
		        

    

      

    If   you suspect a nose wheel shimmy, there might be an easy fix by just   tightening the bolts that hold the nylon blocks together around the nose gear   leg.  Sometimes, that is all it takes.   If that does not   work, probably then next step is to disassemble the unit so that you can sand   a very small amount off the nylon blocks where they fit together.  By   doing this they will then be able clamp a little harder on the nose gear   leg.     

      

    To check   the nose wheel for proper movement, have someone raise the nose wheel by   pushing down on the tail.  You should be able to move the nose wheel   assembly by hand, but it should resist - not be too easy to move from side to   side.    

      

     If   you suspect a nose wheel shimmy (I can tell it by feeling it in the rudder   pedals), raise the nose as mentioned above and see how easy it is to move by   hand.  Tighten it some, by the first method mentioned above, and then   recheck to see if it is now harder to move.  Then test fly to   see if you have a fix.  If not, then dissemble the nose wheel and sand some   off the nylon blocks where they fit together as mentioned above.     

      

Hope   this helps.   

      

Buz       

      

    

      

    

      

    

      

    

      

    

      

    

      

                       [img]cid:image001.jpg(at)01CB018F.84E9B150[/img]   

      

    

   	
   

   	
   

   

   

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

This   e-mail and any attachments may contain confidential material for the sole use   of the intended recipient. If you are not the intended recipient, please be   aware that any disclosure, copying, distribution or use of this e-mail or any   attachment is prohibited. If you have received this e-mail in error, please   contact the sender and delete all copies.   

    

Thank   you for your cooperation.

- The Matronics Lightning-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Lightning-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Lightning-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum