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> Balanced My Tires - Finally, and I found the trick here!
76-914
post Mar 15 2010, 08:40 PM
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Well, after 3 trips back to the tire shop I have them balanced. You'll think this is nuts but try it. First let's give credit where it is due. I clicked on the link posted on aircooledtechguys signature and found this article on balancing tires with air ball bb's. $9 at Wally's and you have enough for 20 tires. It was listed under under "cheap tools" on his website. Basically you put 1.5 oz's in each tire and thats it. So the 3rd trip I took 4 bags weighed out at 1.5 ounces each with these plastic 6.5mm bb's and had the "tire dude" break the beads and insert the bb's. I got some funny looks but it seems to have worked. PS. These can't be used if you have a tire sealer additive in your tires, ever! He shows white balls in his article but I much preferred the competition red bb's.
http://aircooledtech.com/tools-on-the-cheap/balancing_beads/
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tradisrad
post Mar 15 2010, 09:04 PM
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I've not heard of that until now. In the past I have had the tires balanced on the car. Only problem is when you remove the tire you loose the exact balance.
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914Sixer
post Mar 16 2010, 07:33 AM
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I learned something new today! I am going to try some the next go round.
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VaccaRabite
post Mar 16 2010, 07:39 AM
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I am intentending to use this method to balance the big mud tires on my Jeep.

One thing to keep in mind is that steel BBs will rust, and eventually stop working as well. There are companies that make ceramic bbs for exactly this purpose.

Zach
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ME733
post Mar 16 2010, 07:56 AM
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..........The professionals that depend on excellant tire balance , long tire life, (that is to say) a cool tire carcass and tread......are TRUCKERS....any decent truck tire repair shop will have...a silicone sealant and balance liquid...installed it does all the things the "BALLS do. plus keeps the tires cooler, and prevents leakage...install on existing mounted tires thru removed "tire valve"....seals race tires nicely...product can be found on some race car parts sites........M.M.
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EdwardBlume
post Mar 16 2010, 07:59 AM
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This is alll very interesting....
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ws91420
post Mar 16 2010, 08:16 AM
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Guy's there is a this this stuff called balancing powder. Check your local large truck tire dealer or 4x4 shop that does tires.
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Krieger
post Mar 16 2010, 08:19 AM
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April 1st is just about two weeks away. (IMG:style_emoticons/default/popcorn[1].gif)
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Katmanken
post Mar 16 2010, 08:51 AM
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Dear Abby,

When my sister got married, I put marbles in her hubcaps and welded tincans on a chain around the bumper so she could leave the wedding in style.

The marbles made a neat whizzing sound as she sped up and slowed down, and rattled around as she stopped. The tin cans made lots of noise being drug behind the car.

Would the marbles in the hubcaps balance her wheels???
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Krieger
post Mar 16 2010, 09:13 AM
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Only when going straight, on turns all hell breaks loose!
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VaccaRabite
post Mar 16 2010, 09:17 AM
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The BBs trick does work. Tube tire guys have been using it for years, and it is just about the only way to balance some tires (like mudders - which will throw weights off in a heart beat, and the stuck mud will kill balance anyway).

http://www.innovativebalancing.com/HowItWorks.htm

Follow the link for a primer on how it works.
the ceramic beads are made to be installed through the inflation valve (with the valve core removed).

For my 38 inch TSL mud tires, I'd use 10oz of beads per tire to balance them.

Zach
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Katmanken
post Mar 16 2010, 09:31 AM
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I'm kinda torn on that one.

The tire creates a standing wave shape from the balance of forces, and every time you hit a pavement divider at speed, the tire changes shape and the bb's are going to move around from the jolt. And as in any system, it will take time to re-stabilize.

Thump, thump, thump.....

How do the bb's stabilize when being constantly thumped by the pavement dividers when driving on a highway?
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VaccaRabite
post Mar 16 2010, 09:46 AM
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I think it works like a big tilt-a-wheel. As the tire speeds up, it is creating a lot of centripetal force on the beads. The vibrations from hitting a bump may shake the beads loose, but they would be back in place within a second or two.

When the tire is rolling slow enough that the beads are not working, you are not going to be experiencing balance related issues anyway.

Though the final word is that my truck is not on the road yet, so I can't test them. I do know that the truck shop that mounted my tires said that they could not balance them (weird sized wheel) and suggested these beads be used.

Zach
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Katmanken
post Mar 16 2010, 10:08 AM
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I can testify to the noise from the the marbles in the hubcaps.

I think I'm going to defer to my family Missouri roots on this one.

Show me. (IMG:style_emoticons/default/happy11.gif)
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aircooledtechguy
post Mar 16 2010, 11:58 AM
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Thanks for the plug and the confirmation of my sanity (IMG:style_emoticons/default/lol-2.gif)

I've been doing this on all my cars for the past few years now. Nothing but smooth rolling here. I also do this on cars that I restore because there's nothing worse than a beautifully restored set of wheels with lead weights stuck to the side. . .

My 914 has them and I've taken it north of 100mph on dozens of occasions and done some fairly aggressive driving. Nothing but smooth road and no lead weights to fling off in a corner or over a bump.
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Katmanken
post Mar 16 2010, 12:13 PM
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Do the tires become unbalanced when you corner fast?

Do the free rolling balls roll up the side of the tire?

Inquiring minds wanna know.

I want a camera in the tire.....
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PeeGreen 914
post Mar 16 2010, 01:08 PM
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You do this in a car you take over 100mph (IMG:style_emoticons/default/blink.gif)

If this were the ticket I would be sure racers would be doing this. They aren't and I am sure there is a reason behind that. Under 60 I am sure it is a neat trick but over that I would sure not like to see something bad happen because of this.
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aircooledtechguy
post Mar 16 2010, 01:35 PM
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QUOTE(kwales @ Mar 16 2010, 11:13 AM) *

Do the tires become unbalanced when you corner fast?


No.

QUOTE(kwales @ Mar 16 2010, 11:13 AM) *
Do the free rolling balls roll up the side of the tire?


I would highly doubt it. Because the centrifugal force going round and round is WAY greater than any lateral force in a corner.

QUOTE(kwales @ Mar 16 2010, 11:13 AM) *
Inquiring minds wanna know.

I want a camera in the tire.....


THAT would be a neat trick my friend!! (IMG:style_emoticons/default/biggrin.gif)
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Katmanken
post Mar 16 2010, 01:51 PM
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Do a force vector diagram on the balls when cornering.

I bet they move sideways.

Centripetal force produces an effect similar to gravity. In the old science fiction movies with the rotating wheel space stations to simulate gravity, the astronauts can walk around without being rooted to one spot. And if the astronaut is pushed sideways towards the sidewall, he moves in the direction imposed by the push.

Same with the balls in the tires. A side centripetal force can move them sideways while a rotational centripetal force holds them against the inside of the tire.

Instant dynamic imbalance....
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SirAndy
post Mar 16 2010, 01:58 PM
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QUOTE(kwales @ Mar 16 2010, 11:51 AM) *

Instant dynamic imbalance....

Or maybe not ...

Wouldn't a deforming tire (due to side-loads) negate any static (good old weights) balancing anyways?


As soon as the sidewall starts to flex, any balancing done with conventional weights becomes completely useless ...
(IMG:style_emoticons/default/shades.gif) Andy
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