GL1800Riders Forums banner

Dyna Beads video INSIDE A TIRE

2.7K views 22 replies 18 participants last post by  DaveFromDenver  
#1 ·
#6 ·
Like @Wheelss said, I've been using for years (decades actually). Use them on all sorts of vehicles. Counter-act beads, which he was demonstrating, are the original beads and are about a quarter of the cost of dynabeads.

Of all the tires I've mounted over the years, I've only had 4 people insist on traditional weights. And one of them came back later and asked for beads instead. Beads are a constant dynamic balancing agent, unlike one-point in time weight balancing. Also reduces cupping big time.

 
#9 ·
I mount my own motorcycle tires and those of a couple close friends. I will put traditional weights on if asked but prefer to use beads. I use counter-act beads in all my bikes and I've never had an issue using them in motorcycle tires.
That being said I did install new tires at my fathers house while on vacation on my Chrysler Town & Country using beads to balance. I worked for a year or two changing tires at Sears back in the day and he has a professional pneumatic high end tire changing machine in his garage. Between the two of us have changed hundreds of tires over the years.
Vehicle is low mileage in excellent repair with zero issues. On the 650 mile trip home, mostly on highways I experienced a high speed vibration. This vibration did not exists on the way to my fathers house when the tires had traditional weights.
Upon arrival back home I took the van to the repair shop I use here whenever I don't feel like doing the work myself and he pulled the tires, removed the beads and balanced them with traditional weights
6-8k miles later, no vibration.
It is of course possible that the beads were never the issue and we had a tire incorrectly mounted, I am extremely skeptical that this is the case given the amount of experience we have in changing tires...but anything is possible.
Anyway I am a strong proponent of beads but that's my story of the one time I did have an issue with them.
 
#11 ·
Physics can be rather interesting and not everyone understands some of its curious "rules". If it were not for the axle in relation to the outside of the tire, the beads would not be able to work. But because the is no ability for the tire tread area to increase its distance from the central rotation point called the axle; the beads are not able to gather at the heavy side like most people think they should. But what ends up happening is the same thing that occurs with the spin cycle of a front load washer; except the beads are more likely to even out unlike those heavy jeans and light cotton shirts in the same load. If the spin cycle in the washer is not quite even enough to spin fast, it will slow down and speed up trying to get things to shift around to make it an even balance to spin up faster. Centramatics also has a really good demo showing how beads balance out. The only difference in Centramatics and balance beads is Centramatics has the beads in a captured ring instead of being inside the tire. Also, tire slime or even water inside the tire can balance the tire at speed.
 
#12 · (Edited)
Few observations...

First, the ribs inside the tire appear to trap the beads position not allowing them to move much.

Second, the Go Pro should be the heaviest spot in the tire, so all the beads should be piled up on the other side of it if they are going to try to balance it out, but this does not appear to be the case, they look fairly evenly spread out to me.

Third, what it more interesting to me is observing the movement of the tire sidewalls and carcass. You can really see how hard your tire works for you on the road, and this shows why your tires heat up so much from the constant flexing of the carcass.
 
#13 ·
Second, the Go Pro should be the heaviest spot in the tire, so all the beads should be piled up on the other side of it if they are going to try to balance it out, but this does not appear to be the case, they look fairly evenly spread out to me.
The Go Pro is not attached to the tire. It is attached to the wheel.
 
#16 · (Edited)
I have never used beads. Always static balanced, but I will comment on a couple points. First, I have mounted tires without balancing them and never noticed anything wrong, no vibrations, no out of round feelings. Second, I have never added much more than about one once of weight to a motorcycle tire to get it balanced.

I question how well beads really work if I have run unbalanced tires with no issues. In other words, if an unbalanced tire feels fine, what difference will beads make?

Has anyone seen a video from some private source where they added weight to a tire, added beads and run the tire on a spin balancer to prove or disprove they work?
 
#20 · (Edited)
I have never used beads. Always static balanced, but I will comment on a couple points. First, I have mounted tires without balancing them and never noticed anything wrong, no vibrations, no out of round feelings. Second, I have never added much more than about one once of weight to a motorcycle tire to get it balanced.

I question how well beads really work if I have run unbalanced tires with no issues. In other wards, if an unbalanced tire feels fine, what difference will heads make?

Has anyone seen a video from some private source where they added weight to a tire, added beads and run the tire on a spin balancer to prove or disprove they work?
I believe MCN did a test of them like this a few years back, and it was an epic failure. They actually put tires on a balancing machine and tested them to see if the balance was improved. Spoiler alert, they didn't help at all. See the Feb 2010 issue for full report.
 
#17 ·
Would love to see this done with a car tire on the back of a Wing. I am a believer in dynamic balancing and car tires on Wings and would be very interested to see what the car tire is doing through the twisties.
 
#23 ·
I've used beads, weights, and going naked. I have come to the conclusion that with today's manufacturing processes, at least for the brands I buy, there is no appreciable benefit to either static or dynamic balancing. So for my last four CT changes, I've gone naked! And I'm not ashamed! :ROFLMAO:
 
  • Like
Reactions: Fluke189