| Author | Message | ||
     Darth_buell |
Anyone heard of Dynabeads. Got a Smoking deal on a front Pilot power for my 12R from a shop that I pass all the time that just opened. Owner is like 22 and went to MMI. told me about Dynabeads in the tire. Spread out at 40 to 50 miles an hour and rebalance the tire throughout the life of it...... HOLY SHIT. Not a wobble I have noticed yet. Anyone...anyone... Bueller...Totaly skeptical but convinced now...... | ||
| M1combat |
I really don't understand how they could find the light spot in the tire... I would guess that they keep the tire out of balance by a variable amount in different locations so a steady vibration never develops. | ||
| Barker |
"Dyna Beads dynamically balance tires on the move, resulting in a smoother ride, and one that lasts the life of the tire. Dyna Beads are small ceramic spheres, high in density and perfectly smooth, that travel inside the tire to locate themselves opposite heavy points to eliminate out-of-balance motion. The result for your customer is not only a smoother ride, but a better look - Dyna Beads eliminate the need for spoke or stick-on weights applied to those beautiful alloys. They can be used with tubes or tubeless tires, and work for scooters as well." thats sounds interesting. | ||
| Sgthigg |
Sounds good and all. But any material rolling round inside my tire is something I wouldnt ever be able to do. Perfectly round,ceramic,etc. I dont care. It is a material that in the back of my mind I know causes friction. Tires are made to handle friction from the outside. In my car or truck sure I might experiment, but a bike where I only got 2 tires between me and the road. I think I will stick with the old fashioned weights stuck to my rim. My .02 worth. Humm what about in a extreme leaned over situation at a lower speed 20-35 mph? Where are the beads then? (Message edited by sgthigg on February 25, 2008) | ||
| Darth_buell |
Humm what about in a extreme leaned over situation at a lower speed 20-35 mph? Where are the beads then? At such a low speed the weight of the tire by far out weighs the beads.... at a high speed the centrifugal force spreads out the beads...Sounds all good in theory..Just was wondering if anyone had any experience with them. Theoretical is not always the same as practical............... | ||
| Aldaytona |
Dyna Beads, oh yeah, I got 'em. Second set of tires on XB12R (Metzeler M3) with them inside. No shakes or vibes at any speeds with them, throughout the tires life. Liked them so much I put them in all my bikes and have the 1 and 2 oz bags for spares. No more dickin' around with balancers or unsightly weights. Just pour in the correct amount through the stem and inflate. Done. Ride. www.inovateivebalancing.com I think. No need to thank me, I'll be more than happy to accept the bottle of Sam Adams, even if it's not cold. | ||
| Glitch |
I've heard of people using water to do the same thing. Don't know if either work. | ||
| Damnut |
I've heard of people using water to do the same thing. Don't know if either work.  Water will work........... right up until it's 31 degrees out. | ||
| Darth_buell |
 took me about a nano secon to figure that out Damnut... | ||
| Mtg |
There's no way those beads will balance the tire. It is an unstable system, like trying to balance a ball on the top of a triangle, sure it is theoretically possible to balance it at the top, but any displacement in either direction will cause it to fall. The beads will gather at the heavy spot of the wheel, causing the wheel to become more of out balance, which attracts more beads, which causes the wheel to be even further out of balance, etc. It is an unstable system. Either the inventor has no clue what they are talking about, or they're just trying to scam people based on a lack of understanding at the consumer level. If this really worked, why would all these "morons" out there be installing static weights on wheels? Btw, this isn't an issue of mechanics, it is dynamics and control systems- which they definitely do NOT teach at MMI. That is junior and senior year level of a Mechanical Engineering degree. (Message edited by mtg on February 25, 2008) | ||
| Corporatemonkey |
I am not familiar with this exact product. But I do know truckers/Busses have used beaded balancing systems for years. Some have even gone so far as to use golf balls. If anyone has access to a tire balancing machine, why not test it out, and let us know. Just stick a handful of beads in an unbalanced tire, and put it on the machine. We would have proof whether it works or not. | ||
| Reepicheep |
I'm curious as well. Didn't F1 racers used to use rubber tubes of mercury for something similar? It'd be nice to have something like this rather then have to mess with static balancing and (as noted) spoke wheel weights. I assume they are small enough to get through a valve stem on a tube when you remove the valve? They would be bomb proof on a dirt bike as well... My brain hasn't quite wrapped around the physics yet... | ||
| Bigdaddy |
http://www.innovativebalancing.com/ is the correct URL. I have no clue if they actually work. | ||
| Rkutzner |
I disagree, this theory works. I use 'Centramatics' on my 35s on my Jeep. They are always in balance now. I used to come out of mud and hit the highway and my tires would be out of balance and then start to cup because I wheel 2 highway hours from home. On my second set of the same type of tires after they started cupping I bought the Centramatics on the advice of another Jeep enthusiast and the cupping CURED ITSELF and 20000 miles later my 35s are still perfectly balanced. Silky smooth at 65. Don't know how, but they work. Maybe it's magic !!! | ||
| Reepicheep |
I followed the link and they have a plausible explanation. There is a local dealer, I will probably get some for the KLR and see how they work... then maybe add some to the Buell. I mount my own tires now, so it would be nice to not have to futz with balancing. | ||
| Darth_buell |
 ...Wecome to the dark side to all who will use..... I have riden alot. I'm telling you they are working..... You know one day someone came up with the idea that that thing that fell out of the chickens ass would make a great meal..... Eggs are everyday life now......new ideas don't always start with a great following. 90 miles and no wobble..all I gots ta say is  | ||
| Jaydub |
I mount my own tires now, so it would be nice to not have to futz with balancing. I hear that - mount, pour in the beads - DONE | ||
| Badlionsfan |
i've got a kit on order. no pay for balancing and no ugly weights on my sexy new blue wheels sounds like a plan to me. | ||
| Brumbear |
I should will order mine this month with my diablo Rosso's | ||
| Brumbear |
I will order mine this month with my diablo Rosso's | ||
| Raymondt |
I have been wishing I could just mount my own mail order tires. But I find it hard to believe. One of my friends will need to be the guinie pig on this one. I can't afford to get into multiple sets of tires if this fails or causes a crash. | ||
| 984gasm |
Is this for new tire install only, or can it be "thrown" in at any point of the tires life? | ||
| Aldaytona |
 | ||
| Reepicheep |
I reviewed the physics of this more... and I think it would work for motorcycle tires (any tire that effectively forms a triangle). Basically, what happens, is that the heavy spot on the wheel "jerks" the tire off center, which is the shimmy you feel. When it does that, the tire gets jerked, but the beads stay put (due to inertia). Like yanking a tablecloth off a set table. The heavy side of the wheel is always moving away from the beads, so they eventually "walk" to the position where they must be for the shimmy to go away. When the shimmy goes away, the system is stable, and the beads stay put. So I *think* it would work. If I look at their site though, they want 4 to 8 oz of dyna beads for a motorcycle tire. Thats a LOT of rotational and unsprung mass for a sportbike. Their "breakthrough" seems to be that the beads are ceramic, so they won't bead blast your rim, rust, or grind to dust so easy. But that got me thinking... Why not just pre-load my tire with 2-4 oz of tire slime? Won't that do the *same* exact thing, but also have the secondary benefit of self sealing small punctures? I'm smelling some quality time with a drill, one of the kids bike tires, some tire slime, and some fishing weights to deliberately unbalance something... It'll be messy when replacing tires, but thats a messy process anyway. I suppose it would freeze down about 18 degrees F, but thats a bit cold for my blood anyway. Thoughts? Experiences? | ||
| Blake |
I can see how the beads may quell vibration but not at all how they could ever possibly balance the tire, at all, impossible; the beads may damping vibration in much the same fashion as how a tuned-mass damper works in tall buildings. | ||
| Corporatemonkey |
Blake, using beads (or any other medium) for tire balancing has moved on from "trade show huckster" to semi-mainstream. A lot of bus/trucking companies use beaded medium. As I said before this is really easy to prove. Take 2 tires to a wheel shop. One with, one without beads. Balance them and see which is closer. I know someone here must have access to a wheel balancer. | ||
| P47b |
That won't work on a balancer. Your going to need a outside force on the tire to help in balancing. The tire never truly is in balance. The way we have been programmed to think is light side add weight to balance even. The beads get moved constantly for a on the fly balance. You can put the tire on a tire balancer and it will throw the tire around like it is out of balance. If there was a way to mount a small wheel to the balancer and make contact to the wheel like it will on the road that might give us a clue. It all has to do with physics.  | ||
| Blake |
Semi-maintream, you mean like Slick-50? Another huckster product. I stand by what I stated. Beads may act as vibration dampers, but it is impossible for them to act as balancers. If the beads worked, you'd see them being installed at Walmart with new tires. How may a wheel/tire be balanced by a set amount of beads, when different tires/wheels may be out of balance by different degrees, requiring different amounts of balancing weights to achieve balance? Are you trying to tell me that the beads have some kind of intelligence and are able to distribute themselves within every tire to always achieve the proper balance no matter if a wheel/tire would otherwise require 0.5 ounces or 2 ounces of wheel weights? | ||
| Blake |
"Blake, using beads (or any other medium) for tire balancing has moved on from "trade show huckster" to semi-mainstream." Proving only that they are very skilled hucksters. "A lot of bus/trucking companies use beaded medium." For what? To avoid using wheel weights to balance their wheels/tires? No. To quell vibration? Possibly, but I'd like to see some actual credible evidence supporting that. | ||
| Blake |
William (P47B), I cannot tell if you are being serious or not. You are joking, right? (Message edited by Blake on March 17, 2008) |
