Not meaning to hijack this thread, but I have using dyna beads for almost 6K mi. and they have worked perfectly. There may be some combination of tire/wheel/bike that they don't work with. I wonder who did the test? Or better yet who paid for the test.
I would love to read the test report. Would you post a link if you have it?

 

Actually, it was Motorcycle Consumer News. They have no advertisements in them for that specific reason. They tell it like it is.

Think of the principal, the beads are not stable, they are supposed to "find" the light spot? By whay majic? And at stops they settle back to the bottom? So for the first many revolutions they are in one spot?

One of the testers hosts moto tours for a living & agreed. Wouldnt tire manufacturers back them if they worked? Wouldnt racers & pro riders & tire guys use them? None do.

 

Actually, not majic... Physics... You can argue all day that they don't work, doesn't change the fact that they do indeed do all they are claimed too... The physics is there... Plain and simple...

But that doesn't mean they work for racing... The dynamic system just isn't fast enough for it... For touring though, they actually work excellent, doing just what they are claimed to do, ie balance better than the average static balancing...

 

The front tire I used dynabeads on has 16, 000 and is ready to be replaced. No problems. Wonder if they'd work ok on our Superhawks?

 

Probably not that well... Same as racing, they just aren't fast enough... Like I said, touring works fine...

 

If you want to use them you can. I wont.

Here is a goldwinger who concurs. Pretty sure they have a few millon miles to compare
Dyna Beads and the tooth fairy, Santa Claus, etc - Steve Saunders Goldwing Forums

On venture rider Dyna Beads = Wasted Money - VentureRider.Org

If you like them, and dont mind adding weight to the carcass, and believe in them, go ahead.

But MCN is an independant tester, and I have yet to find anyone disagreeing with them that didnt already pay for the beads, and therefore is invested to say they work.

 

Out of fairness, it appears that all three of those references in your link relate to one MCN test in which they put beads in a tire on a balancer 5 times and couldn't get it to balance. 5 tests on one tire hardly constitutes as a scientific study accounting for any variables.

I am also reading that the speeds that conventional tire balancers operate at (35mph) aren't fast enough to get the effect of the beads finding the high spots and staying there from centripetal force. Without getting into it, this makes sense to me. At zero mph, the beads clearly don't work, but you don't need a balanced tire at zero mph. So there has to be some point where they are effective (and if they are effective). Mentally it's obvious that 5mph wouldn't work, so I'm not going to say I know where the transition point is, so saying 35mph wouldn't work is plausible without even doing research or any physics.

 

I don't use them, and I probably never will, since I'm not doing much touring...

Didn't say you had to use them either...

So, no I'm not invested in them working... But it still doesn't change the fact that both you and MCN are wrong... Ie, yes, I'm disagreeing with MCN...

Physics are still physics, no matter what MCN writes... And I do believe the speed needed is greater than 35 Mph, but I can't tell you exactly how much... And, like 7moore7 said, those links all reference the same rather inconclusive and substandard test...

 

I want to change the subject....lets talk about oil.

 

lol oil and tires always gets people going

 

Oil works great as balancing fluid in motorcycle tires. You must use motorcycle specific oil, however. Cage oil does not have sufficient center of gravity.

 

What about synthetic? Will it be so thin that it seeps out of any plugs in the tires?

 

If you use synthetic, it will make your clutch slip. I thought everybody knew that.

 

That's why you need to put in friction additives to synthetic. I'm always looking for the DIY version, though, so I just put in finely ground sand.

 

Sand will throw your tire balance off. Sorry 7moore7, but physics is physics. Pea gravel on the other hand...

 

Here's what I think of your "physics":
Magical Mysteries Snl | Dula TV

 

I stand corrected.