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Blake
| | Posted on Monday, March 17, 2008 - 10:50 am: | 
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The following explanation from the site is pure baloney:
But our vehicle has a suspension system and the axle moves as required. As the vehicle speeds up, the force of the imbalance increases. This is the tire's increasing preference to rotate around its own centre of mass, and, because the tire is out of balance, its centre of mass is not exactly at the centre of the axle.
At sufficiently high speed, the axis of rotation moves away from the axle centre towards the centre of the rotating mass.
Obviously, the centre of mass is on the heavy side of the wheel with respect to the centre of the axle.
So we have our whole wheel and tire rotating around a spot that is slightly off the axle centre, and the part that is farthest away from the new axis of rotation is on the opposite side from the overweight sector. But this is precisely where the beads will roll... to the spot farthest from the axis of rotation.
To repeat: it is because the centre of mass becomes the axis of rotation that the points around the tire are no longer equidistant from the axis of rotation.
So we have a positive result.
from: http://www.innovativebalancing.com/HowItWorks2.htm l
The above is nothing short of a pack of blatant lies. No mechanical engineer with any integrity would ever make such loony claims. Why? Because the exact opposite is true. An imbalance will cause a rotating assembly to want to rotate not about its center of mass as claimed, but further away from its center of mass.
This is exceedingly simple to demonstrate. Put a baseball sized steel ball on one end of a three feet long rod and a baseball on the other. Try twirling the rod about its center. Does the imbalance cause the steel ball end of the rod to want to move inwards (towards the center of mass) or outwards. The answer is outwards off course.
(Message edited by Blake on March 17, 2008) |
Court
| | Posted on Monday, March 17, 2008 - 11:05 am: |
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Where is Smokey Yunick and the Casite when you need him? |
P47b
| | Posted on Tuesday, March 18, 2008 - 11:10 pm: |
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Well Blake, that is why I stated that the tire is never really in balance. Yes it will work. To a point. I still think for it to work you need that out side force on the tire to throw the beads around.
Most Motorcycle tires are really close to being balanced if you mount it right. With that being said you still need to balance your tire after installing a new one.
I really think it’s up to what you believe in. For me (Snake oil)
I never let any aircraft tires out of my shop without balancing them. I was told by a leading tire manufacturer that there was no need to balance a tire on a light aircraft. Explain that to a pilot during take off & landing.
How about we write MithBusters on this one.
Any one else. |
Corporatemonkey
| | Posted on Tuesday, March 18, 2008 - 11:39 pm: |
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How about we write MythBusters on this one.
Great idea |
Bombardier
| | Posted on Wednesday, March 19, 2008 - 12:35 am: |
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Ok I'll bite.
How much and where do I get them?
I am not round a furry but I will be the guinea pig on this one.
Needing a new front tyre soon so I will give it a go then. |
Gambit
| | Posted on Wednesday, March 19, 2008 - 09:56 am: |
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i myself can't explain how these beads work, but i've had them on my wife's chinese scooter for over a year now and has been working great with regards to balancing the tires/wheels.
prior to applying them, wheel imbalance was very obvious that whenever i spin my rear tire while on the scoots centerstand, it made the swingarm wobble so bad that is now "cured" by the beads.
maybe gravity acts on the beads and keeps the "heavy" part of the wheel dynamic and always in the contact patch- which is the bottom? this is just a shot in the dark, my first statement acts as a disclaimer... |
Blake
| | Posted on Wednesday, March 19, 2008 - 07:51 pm: |
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Pure snake oil backed up by a pack of lies. I thought we just proved the lies, yet you still believe?  |
P47b
| | Posted on Wednesday, March 19, 2008 - 08:25 pm: |
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Some one want to post it?
http://dsc.discovery.com/fansites/mythbusters/talk /talk.html |
Steve899
| | Posted on Wednesday, March 19, 2008 - 09:34 pm: |
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I lost my balance on this one??? |
Darth_buell
| | Posted on Thursday, March 20, 2008 - 10:51 am: |
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One day someone said this little pill can cure high blood pressure, or cure a sinus infection, or get your rod to stand up straight again..... who would of thought. I know beads work... Been topped out and hardly any wobble. U-turns at A FEW mph, NO PROBLEM. Your right the tires weight changes at different speeds. So why shouldn't the weight placement.  |
Blake
| | Posted on Monday, April 21, 2008 - 02:01 pm: |
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"One day someone said this little pill can cure high blood pressure, or cure a sinus infection, or get your rod to stand up straight again..... who would of thought. "
Right. Did they lie repeatedly about why it works? Did they submit their product for independent and official review/report? Where they reputable companies or a fly by night web store? |
Blake
| | Posted on Monday, April 21, 2008 - 02:03 pm: |
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"Fly By Night"
Who knew I could invoke "Rush" into this discussion.  Maybe we should ask Neil Peart what he thinks. |
Blake
| | Posted on Monday, April 21, 2008 - 02:07 pm: |
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"I know beads work... Been topped out and hardly any wobble."
A balanced wheel won't wobble at all, so maybe they didn't work as you are thinking.
Motorcycle wheels that are not well-balanced, seldom exhibit much of a noticeable vibration to the rider. What they will do is have excessive and uneven wear. |
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