| Author | Message | ||
     Clk92vette |
I am getting ready to change out both my front and rear tires and intend to use the Dynabeads. If you have used them on your bike I would appreciate your feedback: 1) Are you happy with the way they work? 2) How many oz. did you put in each tire? 3) Did you remove the tape on weights? | ||
| Milezero5 |
I just put them in a few weeks ago, I used the 2 oz bag for each wheel but you could probably use less in the front. They are amazing little things that work amazing at any speeds. Cant report on mileage, but im glad i never have to rebalance them for there life. I did remove the wheel weights for they are now just useless. I always buy a few bags when I buy my tires from Rocky Mountain atv, cheapest tire prices and they always have dynabeads in stock. Ill never go back to stick on weights. | ||
| Avc8130 |
I have put them in 4 sets of tires: 1. Set for a buddy I did. No report back yet. 2. Set for another buddy. He LOVED them. Said the ride was smooth and tire wear was perfect for 7k miles on Pilot Power 2CT. 3. Another set for guy from 2. ~2k miles and he reports similar results. 4. A front tire for myself. I was very happy with the "balance". I didn't notice it as being any better or worse than my usual static operation. HOWEVER, when I removed the front tire...less than 1500 miles later...there was literally molten rubber in there with the beads. The beads had sand blasted the heck out of the inside of the tire. Frankly, it scared the pooh out of me. The damage done at only 1500 miles, considering I usually run sport touring rubber for ~9k, was intense. I could not bear the thought of my tires "wearing" from the inside out where I couldn't see. No more dyna beads for me. YMMV ac | ||
| Dnlink |
I have never used them but I have some doubts. The first thing that comes to mind is what AVC8130 mentioned. If you want to try them run without first for a while then add and see the difference. Some other things come to mind. 1. If they were that superior and easy to use why aren't auto manufacturers using them? Faster,Cheaper, better(?) is their mantra. 2. Are there any race teams using them? 3. I would have to believe the tire manufacturers have investigated them. Do any recommend or discourage their use? Just some things to ponder. | ||
| Buellhusker |
I have used them in a set of Shinko Ravens mounted om my Uly and found them to be very acceptable for balance. I used 1 OZ in the front and 2 OZ in the rear, and I removed all exterior stick on balance weights while using the Beads. Did not like the Shinko tires but the balance was good. | ||
| Reepicheep |
Been beat to death here and on many other forums (including a pretty detailed analysis on a BMW forum). Buy them if they make you feel better, but that's all they do. You can buy a static balancer (cones, rod, bearings and brackets) for $40 on amazon. | ||
| Geforce |
/facedesk Here we go again. | ||
| Sprintst |
Just pulled my front and rear and used my new static balancer. Had just done tires recently, bought the balancer after the fact. Very easy to do Here's the one I got Black Widow Static Balancer (Message edited by sprintst on October 29, 2011) | ||
| Freight_dog |
I've used dyna beads on my old Katana. Never had any problems but not convinced they made a difference since at street speeds a wheel would have to be pretty bad to get your attention. Especially as heavy as those steel wheels are. I have so far only had the Buell wheels mounted and balanced by a professional. | ||
| Reepicheep |
Before I recently got the static balancer, I replaced 4 scorpion syncs without even balancing them. Just line up the paint dot opposite the valve stem. No balancing, no dynabeads. I left whatever weight was on there where it was. Never noticed any problem. Now I have a balancer, I'm tempted to remove the two wheels on the bike, balance them, and reinstall them, and see if I can even tell a difference. | ||
| Sprintst |
I did the same as you, just lining up dots - wheel opposite tire Rode fine, but when I pulled them today they definitely did need balancing (Message edited by sprintst on October 29, 2011) | ||
| Blake |
Dyna beads cannot balance a tire/wheel. They are a nothing but a scam to take money from the gullible. Truth is that under 100 MPH, you will rarely notice an effect from a typical imbalance. I'd wager all the satisfied customers would never notice the difference if the beads were removed from their tires wirhout their knowledge. The details of the physics have been discussed in earlier threads if you are interested. Someday I need to do a demonstration video. There's a slick one seeming to shownthe beefs working, but it's false. It's easy to mislead. A random quantity of loose beads flying around inside a tire magically balancing it as the tire brakes, accelerates, cyclicly flattens at contact patch and deforms wildly over bumps and while cornering? Seriously my brothers of Buell. We're wiser than that. If it sounds too good to be true, then... ? Hey, I've been similarly duped myself. Cost me two exhaust systems. Slick50 people ought to have be in prison. Pure snake oil. | ||
| Dcmortalcoil |
The heavy side is not at the valve, but where it's marked inside the rim. Check the manual. I find the heavy side by putting on a balancer just to make sure, and it doesn't always line up with the marked point perhaps due to add ones, like brake disc. | ||
| Dnlink |
Dcmortalcoil is right, I always put the wheel without the tire on the balancer to find the heavy spot and mark it. The Buell wheels are marked inside with a paint mark/line. Once you find the heavy spot on the rim ,line up the dot on the tire with it and it should cut down on the amount of weight to balance. I have always heard if your under a 1/4 ounce then your good. The last set of tires I put on my Kawi I didn't even balance, It just wasn't getting ridden much because of the 1125. And riding a 60HP bike at 100mph+, well it sounded like the pistons were trying to swap holes.:-) | ||
| Hootowl |
"Cost me two exhaust systems" Three. | ||
| Clk92vette |
I have to admit that I am also skeptical and would really like to see some proof other than seat of the pants interpretations. I am going to try to find proof which would certainly be easy to obtain. Obviously a static balance will not work. But anyone with a dynamic balancing machine could run a quick test before and after the installation of the beads. | ||
| Fast1075 |
There is a Sucker born every minute. P.T. Barnum Give 'em what they want. P.T. Barnum | ||
| Sprintst |
This is an interesting demo claiming to support Dynabeads DynaBead%20demo we need to get Mythbusters to do this one! (Message edited by sprintst on October 31, 2011) (Message edited by sprintst on October 31, 2011) (Message edited by blake on October 31, 2011) | ||
| Blake |
The demo is slick but ask yourself what it is doing and not replicating for a tire going down the road, then look closely. The bottle is never balanced. It vibrates continuously, just not wildly. As if a wheel would ever vibrate more than mere hundredths of an inch. In relation to the bottle diameter, the vibration is extreme. What loose mass on a rotating wheel will do is help dampen vibration. It's the same principle as using tuned mass dampers in tall buildings to combat excessive swaying due to lateral loads from wind or earthquake. | ||
| Reepicheep |
Here is the Motorcycle Consumer News "back and forth" response:
I have Fix-a-flat in three of the Saab tires right now (they seem to be nail magnets). The stuff drives me crazy, I can feel them flopping around until the goo redistributes. In the dead of winter (sub zero temps), it feels like sometimes it never does spread out. The tires were balanced before I put it in there, now they are only balanced at speed when it's warm enough.  And even if they did work, why on earth would you put half a pound of unsprung weight at the outside perimeter of your motorcycle tire? | ||
| Avc8130 |
If you run these on your ZTL equipped Buell, Erik kills a kitten. ac | ||
| Gofast |
This make more sense now. It's like the liquid harmonic balancers on race engines. The balancing is actually done on the counter weights of the crankshaft, the harmonic balancer just helps with the vibration dampening. Regardless, I'm out on the Dyna beads. | ||
| Court |
>>>If you run these on your ZTL equipped Buell, Erik kills a kitten. I've got a picture I am dying to post . . . But . . . . thanks for the coffee on the monitor. | ||
| Slaughter |
Homework assignment: Put your dynabeads in the tire. spin the wheel on a speed balancer. Note results. Put a quarter ounce weight on rim. Spin again. Report results. (Message edited by slaughter on October 31, 2011) | ||
| Blake |
Good for MCN! It's comical how the huckster beads claim that their product that purports to balance a spinning wheel/tire must as a prerequisite to working be exposed to vibration due to imbalance, so how how could it ever achieve balance? Then they claim that vibration from the motorcycle renders them ineffective. Imagine the effect of a rough road or even a roughly chip-surfaced road like so many are these days. | ||
| Blake |
Go fast, >>> This make more sense now. It's like the liquid harmonic balancers on race engines. The balancing is actually done on the counter weights of the crankshaft, the harmonic balancer just helps with the vibration damping. Good analogy. The beads in the tire are less desirable even for damping, first since excellent balance is achievable via minute weights stuck to rim, second since the beads a freewheeling inside the tire and subject to all kinds of disruptive motion, not the least of which is a rough surface inside the tire, moisture, bumps on the road, rough roads, stopping, accelerating, etc... | ||
| Thefleshrocket |
I've got Dynabeads in the tires of my 1125R and my CBR600F2. I'm planning to use them on my VFR800 when mount a set of PP 2CTs on it. The comment that "Dynabeads users wouldn't know if you took the beads out" may well be true. Prior to running Dynabeads, I always had my motorcycle wheels balanced on an electronic balancer with the sticky lead weights. While not terribly scientific, I'll give the PP 2CTs a try on the VFR without the Dynabeads (and with the existing sticky weights removed) to see how smooth they feel. If I notice any vibration, I'll add the Dynabeads and see what effect is noticed. That said, my 1125R and 600F2 have felt properly balanced at speeds of 150+ and 140+, respectively. So best case, the Dynabeads are working; worst case, the wheel balance is pretty much spot on and the Dynabeads aren't hurting anything. Oh, I've also got Dynabeads in the wheels of my wife's Chrysler 300C. It's running 20x9 SRT-8 wheels with 275/40R20 Hankook RH06s. The tires would cause the car to vibrate slightly when cold (usually for the first few miles of driving on Fall or Winter mornings) despite having been statically balanced more than once. After adding the Dynabeads, the morning vibration is either gone or almost gone--I can't remember the last time I've noticed it. So either the tire balancing issue fixed itself or the Dynabeads had a positive effect in that application. | ||
| Sprintst |
Well, one does have to wonder about the bead blast effect on the inside of the tire and rim | ||
| Geforce |
I heard that your DynaBeads will work better if you install a Tornado intake on your Buell! Oh yeah... I went there. /facedesk | ||
| Buellhusker |
Sprintst I ran the Dyna Beeds in a set of Shinko Ravens and there was no evidence of any damage whatsoever to the inside of the tire. It amazes me as to the comments posted here, those who have used the Beads indicate that they work or sorts of work and those who have not used them state that they do not work at all. Makes you wonder dosen't it. |
