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Damping grease for nose gear

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cjh.richardson(at)virgin.
Guest

Posted: Wed Jan 17, 2007 9:32 am Post subject: Damping grease for nose gear

Hi All,

  

 Could someone let me know the special type of  grease for damping the nose-wheel to prevent shimmy. Have accidentally erased  the e-mails on the subject. Off list if you like cjh.richardson(at)virgin.net (cjh.richardson(at)virgin.net)

 Many thanks

 John.

   [quote][b]

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daseitz(at)cfl.rr.com
Guest

Posted: Wed Jan 17, 2007 12:54 pm Post subject: Damping grease for nose gear

It's from Nye Lubricant. I got the sample kit for $60 but only used the

Ultra Heavy PG-44A. Havent had a shimmy since and steers on the ground much

better than without.



Dean Seitz

N284A



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sidsel.svein(at)oslo.onli
Guest

Posted: Tue Jan 23, 2007 6:12 am Post subject: Damping grease for nose gear

Dean,



Do you have a record of what force at the rear endge of the tire is now 

required to turn the nose wheel around?



Regards,

Svein

LN-SKJ



 	  Quote: 	
		  

 It's from Nye Lubricant. I got the sample kit for $60 but only used the

 Ultra Heavy PG-44A. Havent had a shimmy since and steers on the ground 

 much

 better than without.



 Dean Seitz

 N284A

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kheindl(at)msn.com
Guest

Posted: Tue Jan 23, 2007 1:51 pm Post subject: Damping grease for nose gear

Svein,



It's in the manual, I believe 20 pounds.

I found the best method is by trial and error. For testing, I pulled the 

aircraft by the prop in a slalom line, and it should follow easily. Then a 

full power taxi run down the runway. If there is shimmy, tighten it a bit 

more etc. . I don't use special grease and I don't think the pressure on my 

wheel is more than 3 pounds. Makes taxiing in tight circles so much easier.



Karl





 	  Quote: 	
		  From: "Sidsel & Svein Johnsen" <sidsel.svein(at)oslo.online.no>

Reply-To: europa-list(at)matronics.com

To: <europa-list(at)matronics.com>

Subject: Re: Damping grease for nose gear

Date: Tue, 23 Jan 2007 15:11:30 +0100




<sidsel.svein(at)oslo.online.no>



Dean,



Do you have a record of what force at the rear endge of the tire is now 

required to turn the nose wheel around?



Regards,

Svein

LN-SKJ



>

>It's from Nye Lubricant. I got the sample kit for $60 but only used the

>Ultra Heavy PG-44A. Havent had a shimmy since and steers on the ground 

>much

>better than without.

>

>Dean Seitz

>N284A

>




	


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daseitz(at)cfl.rr.com
Guest

Posted: Tue Jan 23, 2007 2:39 pm Post subject: Damping grease for nose gear

Sorry, no I don't have the force. Did not measure it.



Dean Seitz



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ptag.dev(at)tiscali.co.uk
Guest

Posted: Tue Jan 23, 2007 4:06 pm Post subject: Damping grease for nose gear

Hi! Svein/Karl/Dean

Really do recommend you to stick to the correct poundage <(18lb(8kg) to

20lb(9kg) with the wheel clear of the ground> breakout of the castor

yoke and never tempt the shimmy, because when it happens it is dramatic

and is most likely to disintegrate your nose wheel spat.

The new "grease" seemingly is an excellent friction material. However

don't in any way overload the castellated nut either.

Also IMHO I would in future completely remove the yoke, certainly

annually, degrease it and inspect the spindle to yoke fixing. ( it's

only held in by loctite and a 1/4" roll pin.)

To check the breakout force tie a piece of rope to one side of the axle

extend it round the rear of the wheel make a loop on the loose end and

hang a spring balance into the loop to pull the rope until the breakout

force is reached.

Still awaiting the AAIB report on my spindle /yoke coupling failure and

I haven't been the only one to have an incident.



Regards

Bob Harrison. G-PTAG

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kheindl(at)msn.com
Guest

Posted: Wed Jan 24, 2007 4:09 am Post subject: Damping grease for nose gear

Hi Bob,



When I learned about your nosewheel catastrophy last year I changed the 

rollpin to an AN4 bolt, and I am amazed that no mandatory mod has been 

issued.

In regards to shimmy, I found it very easy to keep under control simply by 

taking the load off the nosewheel during high speed taxi runs. Setups tend 

to vary, and I guess it has a lot to do with the wheel being well balanced 

or not.



Regards,



Karl





[quote]From: "R.C.Harrison" <ptag.dev(at)tiscali.co.uk>

Reply-To: europa-list(at)matronics.com

To: <europa-list(at)matronics.com>

Subject: RE: Damping grease for nose gear

Date: Tue, 23 Jan 2007 23:57:19 -0000






Hi! Svein/Karl/Dean

Really do recommend you to stick to the correct poundage <(18lb(8kg) to

20lb(9kg) with the wheel clear of the ground> breakout of the castor

yoke and never tempt the shimmy, because when it happens it is dramatic

and is most likely to disintegrate your nose wheel spat.

The new "grease" seemingly is an excellent friction material. However

don't in any way overload the castellated nut either.

Also IMHO I would in future completely remove the yoke, certainly

annually, degrease it and inspect the spindle to yoke fixing. ( it's

only held in by loctite and a 1/4" roll pin.)

To check the breakout force tie a piece of rope to one side of the axle

extend it round the rear of the wheel make a loop on the loose end and

hang a spring balance into the loop to pull the rope until the breakout

force is reached.

Still awaiting the AAIB report on my spindle /yoke coupling failure and

I haven't been the only one to have an incident.



Regards

Bob Harrison. G-PTAG

--

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sidsel.svein(at)oslo.onli
Guest

Posted: Tue Feb 06, 2007 10:06 am Post subject: Damping grease for nose gear

I have now received a small jar of Nye's Ultra  Heavy PG-44A vibration dampening grease.  Very interesting properties, just  by the feel of it between two fingers.

  

 To those already using this (or similar)  grease:  Did you apply it also to the friction shimmy damper surfaces, or  only the spindle & bearing?

  

 Regards,

 Svein

 LN-SKJ

   [quote][b]

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daseitz(at)cfl.rr.com
Guest

Posted: Tue Feb 06, 2007 12:27 pm Post subject: Damping grease for nose gear

Just to the friction washer. That's all that was needed.



Dean Seitz



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