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Balance wheel pants ?

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Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Thu Feb 12, 2009 9:12 pm Post subject: Balance wheel pants ?

I've got a note on my 'to-do list' to balance the wheels and wheel 

pants. I remember seeing a writeup some where about someone who had not 

only balanced they wheels, but also their wheel pants. I tried the 

archieve search but came up short, anybody know anything about how you 

would balance wheel pants???

Deems Davis # 406

'getting close to 1st engine start'

http://deemsrv10.com/

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Thu Feb 12, 2009 9:23 pm Post subject: Balance wheel pants ?

So their pants aren't lopsided? ;-p

Not sure what the goal might be. About all I can think of is putting

them both on a scale to get their static weight close after all glass

work is done. Can't think of any difference it would make in how

things work.



On Thu, Feb 12, 2009 at 10:10 PM, Deems Davis <deemsdavis(at)cox.net> wrote:

 	  Quote: 	
		   



 I've got a note on my 'to-do list' to balance the wheels and wheel pants. I

 remember seeing a writeup some where about someone who had not only balanced

 they wheels, but also their wheel pants. I tried the archieve search but

 came up short, anybody know anything about how you would balance wheel

 pants???

 Deems Davis # 406

 'getting close to 1st engine start'

 http://deemsrv10.com/

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

nukeflyboy

Joined: 05 Jan 2008
Posts: 162
Location: Granbury, TX

Posted: Fri Feb 13, 2009 4:11 am Post subject: Re: Balance wheel pants ?

Deems,



There have been a few discussions on this with no definitive answers.  Based on my experience with Cessna nose wheel shimmy I think it is worth doing, at least with the nose wheel though I will do all three.  It isn't that hard to do and it does not have to be exact to a nanogram.  You are looking for fore-aft balance, not top-bottom.



Temporarily attach a rod to the wheel pant in line with the axle.  Hang it between something and if the tail is heavy then epoxy some weight in the nose - or vise versa.



You can make a good case that it is wasted effort on the mains since there have been no reports of shimmy or damaged wheel pants that I am aware.  There have been so many issues with the nose wheel that it may be good insurance.

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_________________
Dave Moore
RV-6 built and sold
RV-10 built and flying

orchidman

Joined: 10 Jul 2006
Posts: 277
Location: Oklahoma City - KRCE

Posted: Fri Feb 13, 2009 5:18 am Post subject: Re: Balance wheel pants ?

 	  Deems Davis wrote: 	
		  I remember seeing a writeup some where about someone who had not only balanced they wheels, but also their wheel pants. I tried the archieve search but came up short, anybody know anything about how you would balance wheel pants???



Deems Davis # 406

'getting close to 1st engine start'

http://deemsrv10.com/ 	
Deems,

Tim has talked about balancing both the tires and pants.  The link to the balancing is

http://www.myrv10.com/N104CD/maintenance/20080503/index.html

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_________________
Gary Blankenbiller
RV10 - # 40674
(N2GB Flying)

Tim Olson

Joined: 25 Jan 2007
Posts: 2879

Posted: Fri Feb 13, 2009 6:02 am Post subject: Balance wheel pants ?

Dave, you're right on with this.  I don't remember if I have

yet balanced my mains. I don't think I have, but I did on the

nose.  If you have one side way heavier than the other, then

the arm of the weight will give it the tendency to really

put some action into the movement as you go over bumps or get

other vibrations.  I know others who have seen shimmy problems

go away after balancing.  As you said, it doesn't have to

be exact...just getting them more evened out is good.



For what it's worth, I don't think I did the mains (I

probably should, and will) but I have had some shimmy and

was surprised one day when John C. said he noticed that it

was one of my mains that was shimmying, kind of tipping

up and down, forward and aft.  I'm sure balancing the tire

helped, but I think balancing the wheel fairing would

have been a good idea too.  I just need to get out there

and do it this year while I'm repacking my wheel bearings.



Tim Olson - RV-10 N104CD - Flying



nukeflyboy wrote:

 	  Quote: 	
		   

 

 Deems,

 

 There have been a few discussions on this with no definitive answers.

 Based on my experience with Cessna nose wheel shimmy I think it is

 worth doing, at least with the nose wheel though I will do all three.

 It isn't that hard to do and it does not have to be exact to a

 nanogram.  You are looking for fore-aft balance, not top-bottom.

 

 Temporarily attach a rod to the wheel pant in line with the axle.

 Hang it between something and if the tail is heavy then epoxy some

 weight in the nose - or vise versa.

 

 You can make a good case that it is wasted effort on the mains since

 there have been no reports of shimmy or damaged wheel pants that I am

 aware.  There have been so many issues with the nose wheel that it

 may be good insurance.

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Phil.Perry(at)netapp.com
Guest

Posted: Fri Feb 13, 2009 6:25 am Post subject: Balance wheel pants ?

Hey Deems,



This is a write up that has stuck with me.  I plan on replicating it.



http://home.mindspring.com/~rv6/RV6site/wheel%20pants.htm



Phil

 



--

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pitts_pilot(at)bellsouth.
Guest

Posted: Fri Feb 13, 2009 6:51 am Post subject: Balance wheel pants ?

First, the reason.  Balancing the wheelpants fore/aft takes the stress 

off of the mounting hardware and the pant during rough operations



Second ... the how.  Make another hole opposite the outboard bolt hole, 

run a rod through the hole and balance .....   Just get it close since 

any position other than 'completely level' will unbalance it due to the 

pant CG.  Epoxy and some lead shot work great when you find out how much 

you need and where you need it.  Also remember that it's additional 

weight ..... 



Observation:  I've never like the tubular gear on the RVs ..... they 

look horrible rolling over rough ground/ramps ..... the walk, not roll. 

   .  But they do seem to stand up, so who am I to complain.



Linn

Deems Davis wrote:

 	  Quote: 	
		   



 I've got a note on my 'to-do list' to balance the wheels and wheel 

 pants. I remember seeing a writeup some where about someone who had 

 not only balanced they wheels, but also their wheel pants. I tried the 

 archieve search but came up short, anybody know anything about how you 

 would balance wheel pants???

 Deems Davis # 406

 'getting close to 1st engine start'

 http://deemsrv10.com/

- The Matronics RV10-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:

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