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

Tire Balance

Matronics Email Lists Forum Index -> Kitfox-List

View previous topic :: View next topic

Author Message

poasttown(at)yahoo.com
Guest

Posted: Thu Jul 03, 2008 9:20 am Post subject: Tire Balance

I have just installed my third set of tires on my Kitfox.  I have never had the tires balanced in the past and have never found the need.  However, I am noticing that right after lift off it feels like there is some vibration either in the gear or the tires.  I suppose this could be due to poor take off technique and I'm leavining the ground a bit uncoordinated (no sarcastic comments please) or the tires need balancing.  The vibration ends after about twenty seconds or so.  I began noticing this right after I installed the new tires. 

  

Any comments would be appreciated.  If in fact the tires need balancing is there any way I can balance the tires myself or would I need to take them off and take them to a tire dealer. 

  

Mike

           [quote][b]

matronics(at)bob.brennan.
Guest

Posted: Thu Jul 03, 2008 10:10 am Post subject: Tire Balance

"The  vibration ends after about twenty seconds or so."

  

 Can we assume that the  tires (both?) are rotating for 20 seconds and then stop? If so does the  vibration rate slow as the tires slow?

  

 Bob Brennan

 1991 UK Model 2 Kitfox

 Rotax 582 with 3 blade  prop

 Wrightsville Pa

  

  

   

 From:  owner-kitfox-list-server(at)matronics.com  [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Mike  Chaney

Sent: 03 July 2008 1:17 pm

To:  kitfox

Subject: Tire Balance

 

                   

        

I have just installed my third set of tires on my Kitfox.  I have        never had the tires balanced in the past and have never found the        need.  However, I am noticing that right after lift off it feels like        there is some vibration either in the gear or the tires.  I suppose        this could be due to poor take off technique and I'm leavining the        ground a bit uncoordinated (no sarcastic comments please) or the tires        need balancing.  The vibration ends after about twenty seconds or        so.  I began noticing this right after I installed the new tires.       

        

Any comments would be appreciated.  If in fact the tires need        balancing is there any way I can balance the tires myself or would I        need to take them off and take them to a tire dealer.       

        

Mike

[quote]



3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://www.matronics.com/Navigator?Kitfox-List"'>http://www.matronics.com/Navigator?Kitfox-List

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://forums.matronics.com"'>http://forums.matronics.com

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://www.matronics.com/contribution"'>http://www.matronics.com/contribution

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D



[b]

lcfitt(at)sbcglobal.net
Guest

Posted: Thu Jul 03, 2008 10:14 am Post subject: Tire Balance

Mike,



I would get that effect also.  Try tapping the brakes to stop wheel rotation 

after lift off to see if if affects it.



Lowell



---

kitfoxmike

Joined: 05 Dec 2006
Posts: 373

Posted: Thu Jul 03, 2008 10:15 am Post subject: Re: Tire Balance

what makes you think the tires are any different than an automobile.  I just installed new tires yesterday and had them balanced, They both took over 2 ounces on each tire.  Nice and smooth after take off.  Oh and before I started balancing my tires, it had a very bad shake on take off.  My advice, get them balanced.

kitfoxmike

Joined: 05 Dec 2006
Posts: 373

Posted: Thu Jul 03, 2008 10:18 am Post subject: Re: Tire Balance

 	  lcfitt(at)sbcglobal.net wrote: 	
		  Mike,



I would get that effect also.  Try tapping the brakes to stop wheel rotation 

after lift off to see if if affects it.



Lowell



--- 	




I have my wheels turn forever after take off, with them balanced it is smooth as can be. I can remember my tires before balancing and I always had to hit the brakes, what a pain.  Now I just take off and forget about it.

poasttown(at)yahoo.com
Guest

Posted: Fri Jul 04, 2008 4:49 am Post subject: Tire Balance

Twenty seconds may be a bit long now that I think about it.  Because it just began, I have only had about five take offs since the new tires, I have not actually watched the tires.  I will take Lowell's suggestion and tap the brakes as soon as I notice this and see if it stops. 

  

Mike



--- On Thu, 7/3/08, Bob Brennan <matronics(at)bob.brennan.name> wrote:

  	  Quote: 	
		  From: Bob Brennan <matronics(at)bob.brennan.name>

Subject: RE: Tire Balance

To: kitfox-list(at)matronics.com

Date: Thursday, July 3, 2008, 2:07 PM



  "The vibration ends after about twenty seconds or so."

  

 Can we assume that the tires (both?) are rotating for 20 seconds and then stop? If so does the vibration rate slow as the tires slow?

  

 Bob Brennan

 1991 UK Model 2 Kitfox

 Rotax 582 with 3 blade prop

 Wrightsville Pa

  

  

   

 From: owner-kitfox-list-server(at)matronics.com [mailto:owner-kitfox-list-server(at)matronics.com] On Behalf Of Mike Chaney

Sent: 03 July 2008 1:17 pm

To: kitfox

Subject: Tire Balance

 

     

  

I have just installed my third set of tires on my Kitfox.  I have never had the tires balanced in the past and have never found the need.  However, I am noticing that right after lift off it feels like there is some vibration either in the gear or the tires.  I suppose this could be due to poor take off technique and I'm leavining the ground a bit uncoordinated (no sarcastic comments please) or the tires need balancing.  The vibration ends after about twenty seconds or so.  I began noticing this right after I installed the new tires. 

  

Any comments would be appreciated.  If in fact the tires need balancing is there any way I can balance the tires myself or would I need to take them off and take them to a tire dealer. 

  

Mike

 	  Quote: 	
		  



3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://www.matronics.com/Navigator?Kitfox-List"'>http://www.matronics.com/Navigator?Kitfox-List

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://forums.matronics.com"'>http://forums.matronics.com

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

href='3D"http://www.matronics.com/contribution"'>http://www.matronics.com/contribution

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D





	


	


         [quote][b]

JetPilot

Joined: 10 Jan 2006
Posts: 1246

Posted: Fri Jul 04, 2008 6:28 am Post subject: Re: Tire Balance

Twenty seconds is not long at all for out of balance tires to spin and cause shaking, I have seen it a lot.   If it is the mains, tapping the brakes will stop the shaking, if its the nose wheel, it will not.



There is nothing in your takeoff technique that could cause the plane to shake for 20 seconds after it leaves the ground, the tire balance is a pretty sure bet.



Mike

_________________
"NO FEAR" - If you have no fear you did not go as fast as you could have !!!

Kolb MK-III Xtra, 912-S

Guy Buchanan

Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA

Posted: Fri Jul 04, 2008 6:58 am Post subject: Tire Balance

At 11:18 AM 7/3/2008, kitfoxmike wrote:

 	  Quote: 	
		  I have my wheels turn forever after take off, with them balanced it 

is smooth as can be. I can remember my tires before balancing and I 

always had to hit the brakes, what a pain.  Now I just take off and 

forget about it.


	


Mike,

         Stupid question time. Where did you get them balanced. (I 

mean generally.) Car shop? Aircraft shop?

Guy Buchanan

San Diego, CA

K-IV/1200 w/ 582 C-box & Warp 3 blade

100% and flying thanks mostly to Bob Ducar

_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too.

Lowlead

Joined: 02 May 2006
Posts: 6

Posted: Fri Jul 04, 2008 2:52 pm Post subject: Re: Tire Balance

Don't know if you've already tried this, but I've read that if the tire has a red paint dot on it, the dot should be aligned with the valve stem for the best balance. 



Here's a quote from Skytreads.com/mounting :



Tire/Wheel Alignment for Balance. The "red" balance mark indicates the light point of the tire's balance. Align this mark with the heavy point of the wheel. Many wheel manufacturers today identify either the light spot or heavy spot of the wheel with markings in the flange area. Follow their instructions on assembly and balance. Be sure to align the tire's light spot 1800 from the wheel's light spot or directly in line with the wheel's heavy spot. In the absence of specific wheel markings, align the tire's red balance mark with the wheel inflation valve. Some aircraft tubes feature balance marks to indicate the heavy portion of the tube. These marks are approximately 1/2" wide and 2" long. When inserting the tube in the tire, its balance mark should be aligned with the balance mark on the tire. If the tube has no balance mark, align the valve with the balance mark on the tire. A properly balanced tire/wheel assembly improves the tire's overall wear characteristics. In addition to severe vibration, an unbalanced assembly will cause irregular and localized tread wear patterns that can reduce the overall performance life of the tire.

Dan H.

kitfoxmike

Joined: 05 Dec 2006
Posts: 373

Posted: Fri Jul 04, 2008 3:03 pm Post subject: Re: Tire Balance

 	  Guy Buchanan wrote: 	
		  At 11:18 AM 7/3/2008, kitfoxmike wrote:

 	  Quote: 	
		  I have my wheels turn forever after take off, with them balanced it 

is smooth as can be. I can remember my tires before balancing and I 

always had to hit the brakes, what a pain.  Now I just take off and 

forget about it.



	


Mike,

         Stupid question time. Where did you get them balanced. (I 

mean generally.) Car shop? Aircraft shop?

Guy Buchanan

San Diego, CA

K-IV/1200 w/ 582 C-box & Warp 3 blade

100% and flying thanks mostly to Bob Ducar 	




Motorcycle shop for the ATV tundra tires on the fox.



for the RV7 with 500x5 I had to go the big airport and have the FBO do them, those where way out of balance also, even matching up the red dot to the valve stem.

Display posts from previous:

	Matronics Email Lists Forum Index -> Kitfox-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