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Nose Wheel

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FamilyGage(at)AOL.COM
Guest

Posted: Sat May 29, 2010 5:52 pm Post subject: Nose Wheel

Gentlemen:

  

 I know that this has been discussed many times on our site.  Would  like to present the nose wheel shimmy, just in case someone has had additional  experience.

 I fly a 2005 Esquil, that is Lightning cowl forward and all three gear  legs.

 There is no nose wheel shimmy at take off, but often becomes rather severe  on landing after I allow the weight off of the main gear onto the nose  wheel. By this time she is going rather slow, about 35-40 mph.  The  shaking will stop at about 15-20 mph.  And does not recur during taxi  operations.  What is interesting is that even when the plane is not moving,  should I take the prop and put lateral forces i.e., right and left, there is a  clanking noise as if the tire is rubbing against the wheel pant.

 I have checked out the nose wheel installation, changed tire pressures,  balanced all tires, changed tire brands; however, the symptom remains  unchanged.

 I am out of ideas.  Have learned to live with the shimmy, but this  seems to be a mechanical mystery.  Any suggestions would be greatly  appreciated.

 Ray Gage

 83TW  Spruce Creek Florida

  [quote][b]

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EAFerguson(at)AOL.COM
Guest

Posted: Mon May 31, 2010 4:42 am Post subject: Nose Wheel

In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight Time,  FamilyGage(at)AOL.COM writes:

  	  Quote: 	
		      

   I know that this has been discussed many times on our site.  Would    like to present the nose wheel shimmy, just in case someone has had additional    experience.

   I fly a 2005 Esquil, that is Lightning cowl forward and all three gear    legs.

   There is no nose wheel shimmy at take off, but often becomes rather    severe on landing after I allow the weight off of the main gear onto the nose    wheel. By this time she is going rather slow, about 35-40 mph.  The    shaking will stop at about 15-20 mph.  And does not recur during taxi    operations.  What is interesting is that even when the plane is not    moving, should I take the prop and put lateral forces i.e., right and left,    there is a clanking noise as if the tire is rubbing against the wheel    pant.

   I have checked out the nose wheel installation, changed tire pressures,    balanced all tires, changed tire brands; however, the symptom remains    unchanged.

   I am out of ideas.  Have learned to live with the shimmy, but this    seems to be a mechanical mystery.  Any suggestions would be greatly    appreciated.

   Ray Gage

   83TW  Spruce Creek Florida

	


 

 Ray,

  

 This is a common problem with aircraft that have free swiveling nose wheels  and may have nothing to do with tire balance. Check the nylon block for  tightness. If the joint is too loose the wheel shimmies. We don't have an  adjustment, so the only solution would be to replace parts, i.e. the nylon  blocks.

  

 On Grumman singles, which do have adjustable swivels, a force of 10 lbs to  turn the wheel is standard. Less than that will produce shimmy. Since our  Lightings and Esquals weight about half a Grumman, I'd look for less than  10 lbs.

  

 Good luck fixing it.

  

 Earl Ferguson

 Atlanta

  [quote][b]

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FamilyGage(at)aol.com
Guest

Posted: Mon May 31, 2010 12:39 pm Post subject: Nose Wheel

Earl,

 Thank you.  Will check out the tension on the block, and see if it  needs replacement.

 Ray Gage

  

  In a message dated 5/31/2010 8:42:35 A.M. Eastern Daylight Time,  EAFerguson(at)AOL.COM writes:

  	  Quote: 	
		        In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight Time,    FamilyGage(at)AOL.COM writes:

    	  Quote: 	
		        

     I know that this has been discussed many times on our site.  Would      like to present the nose wheel shimmy, just in case someone has had      additional experience.

     I fly a 2005 Esquil, that is Lightning cowl forward and all three gear      legs.

     There is no nose wheel shimmy at take off, but often becomes rather      severe on landing after I allow the weight off of the main gear onto the      nose wheel. By this time she is going rather slow, about 35-40      mph.  The shaking will stop at about 15-20 mph.  And does not      recur during taxi operations.  What is interesting is that even when      the plane is not moving, should I take the prop and put lateral forces i.e.,      right and left, there is a clanking noise as if the tire is rubbing against      the wheel pant.

     I have checked out the nose wheel installation, changed tire pressures,      balanced all tires, changed tire brands; however, the symptom remains      unchanged.

     I am out of ideas.  Have learned to live with the shimmy, but this      seems to be a mechanical mystery.  Any suggestions would be greatly      appreciated.

     Ray Gage

     83TW  Spruce Creek Florida

	


   

   Ray,

    

   This is a common problem with aircraft that have free swiveling nose    wheels and may have nothing to do with tire balance. Check the nylon block for    tightness. If the joint is too loose the wheel shimmies. We don't have an    adjustment, so the only solution would be to replace parts, i.e. the nylon    blocks.

    

   On Grumman singles, which do have adjustable swivels, a force of 10 lbs    to turn the wheel is standard. Less than that will produce shimmy. Since our    Lightings and Esquals weight about half a Grumman, I'd look for less than    10 lbs.

    

   Good luck fixing it.

    

   Earl Ferguson

   Atlanta

 	  Quote: 	
		  



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====================================

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

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  [quote][b]

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Bill Strahan

Joined: 20 Aug 2008
Posts: 145

Posted: Mon May 31, 2010 1:00 pm Post subject: Re: Nose Wheel

Now this has me wondering if my shimmy is from the mains or the nose.  I have a Grumman Traveller and I've experienced the nosewheel shimmy when I didn't have the tension high enough, as described previously.



Any way to tell which it is, other than have someone observe the plane on landing and try to see where it's coming from?



Bill

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n45bm(at)yahoo.com
Guest

Posted: Mon May 31, 2010 2:09 pm Post subject: Nose Wheel

Ray,

New guy here, have yet to receive my kits, but hope to contribute to this group. I remember seeing something on one of the newsletters about just that problem. Seems that one solution is to drill out the nylon bearing pieces to a larger diameter and insert brass oil lite type bushings sized for the nose wheel fork that the nose gear pivots on. Can't remember which issue I saw that on, but I did see it. My guess, if it's the nose wheel shimmying is that there may be some play in those nylon blocks. My two cents; worth.

Bernardo Melendez



--- On Mon, 5/31/10, FamilyGage(at)aol.com <FamilyGage(at)aol.com> wrote:

 	  Quote: 	
		  

From: FamilyGage(at)aol.com <FamilyGage(at)aol.com>

Subject: Re: Nose Wheel

To:  lightning-list(at)matronics.com

Date: Monday, May 31, 2010, 3:31 PM



     Earl,

 Thank you.  Will check out the tension on the block, and see if it  needs replacement.

 Ray Gage

  

  In a message dated 5/31/2010 8:42:35 A.M. Eastern Daylight Time,  EAFerguson(at)AOL.COM writes:

  	  Quote: 	
		        In a message dated 5/29/2010 9:52:42 P.M. Eastern Daylight Time,    FamilyGage(at)AOL.COM writes:

    	  Quote: 	
		        

     I know that this has been discussed many times on our site.  Would      like to present the nose wheel shimmy, just in case someone has had      additional experience.

     I fly a 2005 Esquil, that is Lightning cowl forward and all three gear      legs.

     There is no nose wheel shimmy at take off, but often becomes rather      severe on landing after I allow the weight off of the main gear onto the      nose wheel. By this time she is going rather slow, about 35-40      mph.  The shaking will stop at about 15-20 mph.  And does not      recur during taxi operations.  What is interesting is that even when      the plane is not moving, should I take the prop and put lateral forces i.e.,      right and left, there is a clanking noise as if the tire is rubbing against      the wheel pant.

     I have checked out the nose wheel installation, changed tire pressures,      balanced all tires, changed tire brands; however, the symptom remains      unchanged.

     I am out of ideas.  Have learned to live with the shimmy, but this      seems to be a mechanical mystery.  Any suggestions would be greatly      appreciated.

     Ray Gage

     83TW  Spruce Creek Florida

	


   

   Ray,

    

   This is a common problem with aircraft that have free swiveling nose    wheels and may have nothing to do with tire balance. Check the nylon block for    tightness. If the joint is too loose the wheel shimmies. We don't have an    adjustment, so the only solution would be to replace parts, i.e. the nylon    blocks.

    

   On Grumman singles, which do have adjustable swivels, a force of 10 lbs    to turn the wheel is standard. Less than that will produce shimmy. Since our    Lightings and Esquals weight about half a Grumman, I'd look for less than    10 lbs.

    

   Good luck fixing it.

    

   Earl Ferguson

   Atlanta

 	  Quote: 	
		  ===========t href="http://www.matronics.com/Navigator?Lightning-List">http://www.matronics.com/Navigator?Lightning-List====================================ms.matronics.com/">http://forums.matronics.com====================================tp://www.matronics.com/contribution">http://www.matronics.com/contribution=========== 	
	


   	  Quote: 	
		  	


	
 [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

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