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!

Matronics Email Lists Forum Index -> Europa-List

View previous topic :: View next topic

Author Message

robertpeterfrost

Joined: 07 Jan 2008
Posts: 13
Location: Wakefield. UK

Posted: Wed Nov 02, 2011 4:59 am Post subject: Nose Wheel!

On landing at Sherburn on the hard runway when we slowed to around 35 knots the nose wheel started to bounce up and down rapidly. My buddy Roger was P1 and he held the stick hard back but it continued "bounce" until we slowed to 20 knots. In 100 hours and hundreds of landings this has never occurred.

I have the nose wheel spring mod fitted, not the bungee, any ideas, could it be the shimmy damper needs checking?



Robert Frost

G-RPAF

Tri-Gear XS. 605

_________________
Robert

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

Posted: Wed Nov 02, 2011 5:32 am Post subject: Nose Wheel!

Robert 

Definitely  a shimmy problem but you need to inspect the whole thing based

on my previous experiences! Then ensure the setting is done to the book.

Regards

Bob H  G-PTAG



--

pjeffers(at)talktalk.net
Guest

Posted: Wed Nov 02, 2011 5:36 am Post subject: Nose Wheel!

Hi Robert,

Your description nearly fulfils nose wheel shimmy.  It is also far and away

the most likely cause. One other obvious possibility, although you would

probably have noticed this, is a flat tyre!

So check N/W tyre pressure and then check shimmy damper adjustment. Please

refer to the manual to do this check using a spring balance.  As a quick

check, with the nose wheel off the ground check that there is a fair amount

of resistance to turning the nose wheel fork left and right.  There should

be a fair bit of resistance.  If not then adjustment is necessary.

Nose wheel shimmy is primarily a problem on hard dry runways.  It happens

far less on grass.

If shimmy is the problem get it fixed quickly, much damage can be caused to

the rest of the airframe if you let it persist. 



Pete Jeffers

 Europa Club LAA Rep



--

robertpeterfrost

Joined: 07 Jan 2008
Posts: 13
Location: Wakefield. UK

Posted: Thu Nov 03, 2011 6:43 am Post subject: Re: Nose Wheel!

Hi Pete and Bob,



Thanks for your responses, we did think this could be the only problem but it is reassuring that we will not be searching in the wrong direction now following your comments, I have re-read the manual and remember how to test and set up the correct breaking torque. Thank you both for your input.



Regards



Robert

G-RPAF

_________________
Robert

Ivor Phillips

Joined: 16 Jan 2006
Posts: 253
Location: London UK

Posted: Thu Nov 03, 2011 10:14 am Post subject: Nose Wheel!

Hi Robert 

  

I have used the Nyogel grease in my shimmy damper from day one, it allows 

The damper to work much easier without an excessive load on the adjusting nut, 

  

Plus it makes steering the aircraft easier without using a lot of differential braking, 

  

http://www.nyelubricants.com/products/nyogel.shtml  

  

Regards 

  

Ivor 

G-IVER



 On 2 November 2011 13:34, Peter Jeffers <pjeffers(at)talktalk.net (pjeffers(at)talktalk.net)> wrote:

 [quote]--> Europa-List message posted by: "Peter Jeffers" <pjeffers(at)talktalk.net (pjeffers(at)talktalk.net)>

 

Hi Robert,

Your description nearly fulfils nose wheel shimmy.  It is also far and away

the most likely cause. One other obvious possibility, although you would

probably have noticed this, is a flat tyre!

So check N/W tyre pressure and then check shimmy damper adjustment. Please

 refer to the manual to do this check using a spring balance.  As a quick

check, with the nose wheel off the ground check that there is a fair amount

of resistance to turning the nose wheel fork left and right.  There should

 be a fair bit of resistance.  If not then adjustment is necessary.

Nose wheel shimmy is primarily a problem on hard dry runways.  It happens

far less on grass.

If shimmy is the problem get it fixed quickly, much damage can be caused to

 the rest of the airframe if you let it persist.



Pete Jeffers

 Europa Club LAA Rep

 

--

kees de bussy

Joined: 16 Jul 2009
Posts: 18
Location: the netherlands

Posted: Fri Nov 04, 2011 4:14 am Post subject: Re: Nose Wheel!

I had occasionally the same or similar problem and in my case it was definitely shimmiing. The only situation this happened was when I tried to keep the nose wheel off the ground as log as possible after touch-down. So the nose wheel touches the ground at relative low speed and softly. 

I tried to readjust the dampener to an extend that steering during taxiing was pretty hard but it had no effect whatsoever. 

I now land the plane as usual on the main gear but immediately after touch-down I lower the nose wheel to put it on the ground. This way I can avoid the shimmiing. 

I might try Ivor's suggestion to use Nyogel and try again.  Does the dampener be adjusted to the same settings using Nyogel ? 



Kees de Bussy

PH-SBR

Ivor Phillips

Joined: 16 Jan 2006
Posts: 253
Location: London UK

Posted: Fri Nov 04, 2011 8:49 am Post subject: Nose Wheel!

Hi Kees

  

 I used the 767A grease smeared on both sides of the fibre disc, Then adjust as the Europa manual and you will find the spindle nut

 doesn't have to be tighten any were near the amount you would without it to get the same friction,

 It works very well with much easier steering,

  

 regards

 Ivor

 G-IVER

 



 

 On 4 November 2011 12:14, kees de bussy <keesdebussy(at)hotmail.com (keesdebussy(at)hotmail.com)> wrote:

 [quote]--> Europa-List message posted by: "kees de bussy" <keesdebussy(at)hotmail.com (keesdebussy(at)hotmail.com)>

 

I had occasionally the same or similar problem and in my case it was definitely shimmiing. The only situation this happened was when I tried to keep the nose wheel off the ground as log as possible after touch-down. So the nose wheel touches the ground at relative low speed and softly.

 I tried to readjust the dampener to an extend that steering during taxiing was pretty hard but it had no effect whatsoever.

I now land the plane as usual on the main gear but immediately after touch-down I lower the nose wheel to put it on the ground. This way I can avoid the shimmiing.

 I might try Ivor's suggestion to use Nyogel and try again.  Does the dampener be adjusted to the same settings using Nyogel ?



Kees de Bussy

PH-SBR





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=356879#356879

 ber is the Annual List Fund Raiser.  Click on

 /" target="_blank">www.aeroelectric.com

 p://www.matronics.com/contribution" target="_blank">http://www.matronics.com/contribution

                              -Matt Dralle, Li    - The Europa-List Email Forum -

 :

 opa-List" target="_blank">http://www.matronics.com/Navigator?Europa-List<      - MATRONICS WEB FORUMS -

 =   --> h

 a href="http://www.matronics.com/contribution" target="_blank">http://www.matronics.com/contribution

 ===========



[b]

kees de bussy

Joined: 16 Jul 2009
Posts: 18
Location: the netherlands

Posted: Fri Nov 04, 2011 10:27 am Post subject: Re: Nose Wheel!

Hi Ivor,



Thanks for your information. I will go shopping for 767A and I will let you know about my experiences with it.



Kees de Bussy

PH-SBR

frans(at)privatepilots.nl
Guest

Posted: Fri Nov 04, 2011 12:37 pm Post subject: Nose Wheel!

On 11/04/2011 07:27 PM, kees de bussy wrote:

 	  Quote: 	
		   Thanks for your information. I will go shopping for 767A and I will let you know about my experiences with it.


	


I need a little bit too, but it is only available in larger quantities. 

Maybe we can share it?

(I used the 767A before, got some from Ivor, it worked perfect, but due 

to replacing the oil hoses some oil dripped on the nose gear and washed 

it away.)



Frans (PH-DIY)

robertpeterfrost

Joined: 07 Jan 2008
Posts: 13
Location: Wakefield. UK

Posted: Mon Nov 21, 2011 8:16 am Post subject: Re: Nose Wheel!

I am trying to source Nyogel 767A but it is not held in the UK by Newgate Simms they have to import it and it will be in 100ml tubs and will take 3 weeks to come. It costs about Â£31.00 for this small tub, but that isn't the main problem it's the 3 week wait which then clashes with me being overseas for nearly 3 weeks over the Christmas Holidays, so no flying until the New Year!!



Has anyone a small amount of Nyogel 767A I can purchase to save me the wait?



Regards



Robert

_________________
Robert

brian.davies(at)clara.co.
Guest

Posted: Mon Nov 21, 2011 9:35 am Post subject: Nose Wheel!

Nyogel 868H is available from Farnell in the UK.  100cc costs £18.79.



I use a sample of it on my aircraft two weeks ago and it works just fine. I

obtained a sample from Nyogel in the USA which was delivered within 7 days.



Regards



Brian Davies



--

robertpeterfrost

Joined: 07 Jan 2008
Posts: 13
Location: Wakefield. UK

Posted: Mon Nov 21, 2011 10:32 am Post subject: Re: Nose Wheel!

Thanks Brian, I will give them a call to see if they have any in stock.



Regards



Robert

_________________
Robert

robertpeterfrost

Joined: 07 Jan 2008
Posts: 13
Location: Wakefield. UK

Posted: Thu Dec 08, 2011 9:00 am Post subject: Re: Nose Wheel!

Hi All,



After tightening up the castle nut to 18lb we still had a problem so I took your advise and purchased Fluorcarbon Nyogel 868H, stripped out the nose wheel and found a small amount of grease had got on the shimmy plate (Nev Eyre was correct, again!!), cleaned it all down and used the Nyogel, test flew the aircraft and it works a treat!!



I purchased a 10 gram tube (NL1013) from Newgate Simms Ltd, Chester (01244 660771), they were VERY helpful, cost Â£21.00 including Vat and delivery, a very worthwhile purchase and highly recommended.



Regards



Robert

_________________
Robert

Display posts from previous:

	Matronics Email Lists Forum Index -> Europa-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 can download files in this forum