Just recently had a problem after getting new tires and having dealer use Dyna Beads to balance trires. When the tires spin, the beads were forced into the valve stem causing the core to stick when using a gauge to check tire pressure. I had to return bike to dealer to have beads removed and tires re-balanced using weights. The service manager agreed that the beads did cause the valve to stick, thereby deflating the tire and did all the remedial work at no charge. He said he has been using beads for 3 years with no prior problems. Anyone out there with Dyna Beads in their tires should watch out for this potential problem.
Dyna Beads Problem
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I honestly do not know what Dynabeads are but I know what they do.......... Can you just place them inside the tire before being mounted on the wheel.?? Rather than going thru the tire valve.??? AND.I have heard that some people will smack the tire after sitting for a period of time (like in the Winter!) with a 2X4 to loosen em up.... (?)
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not that I would ever doubt a dealer or a mechanic at a dealer, but in my teeny jarhead mind that sounds counter to logic, arent beads supposed to go to outer part of centripetal force to balance tire, and wouldn[t that be away from the valve stem both in the still and rotating mode?
I never been inside a spinning tire so I donnno for sure but it seems they would be forced to the tread not to the rim side, (we don't have hills here to roll down unless you count the one at the county dump and they shoot at you on that one if you're there at night.... I've been told.)
I never been inside a spinning tire so I donnno for sure but it seems they would be forced to the tread not to the rim side, (we don't have hills here to roll down unless you count the one at the county dump and they shoot at you on that one if you're there at night.... I've been told.)
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1,161 Posts
Only time I can see them dropping into the valve is if it stopped with the valve at the top of the wheel
and some beads were still at the top of the tyre they are tiny little things so maybe they can.
It is hard to Imagen though but I don't doubt it strange things happen.
and some beads were still at the top of the tyre they are tiny little things so maybe they can.
It is hard to Imagen though but I don't doubt it strange things happen.
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3,599 Posts
If the beads get stuck in the valve during installation then yes it will cause a problem.
But properly installed it is virtually impossible to happen naturally!
In other words the installer messed up and caused your problems.
That is why I do most of my work myself.
Quality control and pride in one's work is gone.
Like our old German engineer used to tell our service guys: "There is never enough time to do it right the first time but always enough time to go back and get it right the second time." while shaking his head from side to side.
But properly installed it is virtually impossible to happen naturally!
In other words the installer messed up and caused your problems.
That is why I do most of my work myself.
Quality control and pride in one's work is gone.
Like our old German engineer used to tell our service guys: "There is never enough time to do it right the first time but always enough time to go back and get it right the second time." while shaking his head from side to side.
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2,646 Posts
I have used Dyna Beads off and on for several years and never had any problems; other than that they "wear out", or more accurately pound themselves into dust after 10k to 15k miles. The dust adheres to the inside of the tire reducing the mass (and effectiveness) of the remaining beads. I use them only when a wheel/tire refuses to be static balanced--sometimes they do--and have found them to help in that situation...
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2,805 Posts
Yes you can do that way also.v8eyedoc said:
After have new tire install I wait 2-3 day for mount liquid to dry, then install Dynabead, with Ariete valve use 32-36 inch 3/16 tube with very little air pressure to push bead in, it work well like this.
Never ever have such problem with Dynabead product.
DynaBeads acknowledges and suggests a remedy for this problem on their web site. In their "General Advise" section:
Motorcycles:
"While the filtered valve cores are an asset if they can be used, many motorcycle valve stems, especially the metal chrome or SS ones will not accept them. If you don't have the filtered cores, simply remember to rotate the valve stem somewhere around the 6:00 position and give the stem a quick shot of compressed air BEFORE checking air pressure. For 90° valve stems, always give it a quick shot of air before checking"
I purchased "filtered valve cores" and found they did not fit in the 650's factory supplied valve stems. I went forward using standard stems and have had no problems with loss of air pressure.
If you do, simply follow these instructions!
Motorcycles:
"While the filtered valve cores are an asset if they can be used, many motorcycle valve stems, especially the metal chrome or SS ones will not accept them. If you don't have the filtered cores, simply remember to rotate the valve stem somewhere around the 6:00 position and give the stem a quick shot of compressed air BEFORE checking air pressure. For 90° valve stems, always give it a quick shot of air before checking"
I purchased "filtered valve cores" and found they did not fit in the 650's factory supplied valve stems. I went forward using standard stems and have had no problems with loss of air pressure.
If you do, simply follow these instructions!
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418 Posts
Maybe instead of the beads you might want to check out this product: http://www.ride-on.com/tire-protection-system.html.
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