Has anyone heard of/fitted Dyna Beads?

[pfillery]

These are supposedly little ceramic balls you put in through your valve stem into your tyre and never need to balance your wheels again. You don't need to use the balance weights so your rims are clear of unsightly lead. Plus they rebalance every time you stop and start driving (because they move with centrifugal force to where they are needed).

Apparently safe for tubed or tubeless and apart from having to fit 5 ounces of these into your valve stem through an applicator, they are fuss and maintenance free.

Has anyone got them/had them/used them? and are they just another hiclone?

[crash]

They have been widely used in the trucking industry in the USA for a few years now. I did read a review in a US publication where they tried them in a 44" tyre with success. This was a few years ago that I read the article, and from memory they had trouble calculating out how much to put in the tyre. Other than that, the review thaought it was an interesting idea.
The + factor is that you do not have to worry about loosing wheel weights on the trail.

[NavyDiver]

Interesting idea the manufacture (http://www.innovativebalancing.com/index.php) The utube example the critics Valve leak? (http://www.gl1800riders.com/forums/showthread.php't=227547) not much more reported faults or issues reported.

Seem to be mostly chatted about on bikes. Had BMW bike and wish I had heard of these to try as the longevity on my back wheel was fairly limited. Sure it wasn't me taking off to fast!

For about ten dollars a wheel it would not be too expesive to try if you need to? Little if any vibration noted on my D3. I noted a fair bit of lead applied to balance two of my seond hand 17" wheels. The tesimonials on the manufactures page suggest a fair few 4wds are happy with them but as some point out if the is exessive vibration the cause should be identified first. Hope some first hand use occurs. Thanks for the interesting post.

[gromit]

Interesting idea, I guess your wheels are out of balance until you get up to a certain speed.
One of the puncture repair liquids did the same thing. Inject a certain amount through the valve stem and it distributed itself round the inside of the tyre/tube and balanced the wheel at the same time. Stayed liquid until there was a leak (puncture) and set in contact with air.

It would be interesting to find out what rotational speed is needed before the wheel is actually balanced.

Maybe they only work if you inflate the tyre with nitrogen.....;)


Colin

[Tusker]

Been around for some years now. Might be another brand, but I thought there was a problem clogging the valve.

In theory these are ideal for the big lumpy tyres like Simex, & other crossply boneshakers. I looked into another brand some time ago, and an't remember now why I didn't go ahead. Problems with the Secondair tube I suspect.

Regards
Max P

[pfillery]

Interesting idea, I guess your wheels are out of balance until you get up to a certain speed.
One of the puncture repair liquids did the same thing. Inject a certain amount through the valve stem and it distributed itself round the inside of the tyre/tube and balanced the wheel at the same time. Stayed liquid until there was a leak (puncture) and set in contact with air.

It would be interesting to find out what rotational speed is needed before the wheel is actually balanced.

Maybe they only work if you inflate the tyre with nitrogen.....;)


Colin

According to their site it is about 30mph upwards that they work at. Thing is I'm thinking about the green tyre puncture preventative liquid (slime I think it is called) and obviously one will not work too well with the other. I'd prefer wheel weights and slime to no weights and punctures.

Pity the weights can't go on the back of the rim leaving the front clear.

[NavyDiver]

According to their site it is about 30mph upwards that they work at. Thing is I'm thinking about the green tyre puncture preventative liquid (slime I think it is called) and obviously one will not work too well with the other. I'd prefer wheel weights and slime to no weights and punctures.

Pity the weights can't go on the back of the rim leaving the front clear.
Brocky used it (http://www.tyreshield.com.au/tyrevideo.wmv) it is called Tyreshield site (http://www.tyreshield.com.au) . Whoops sorry you said GREEN (http://www.openallday.au.com/WHEELS.html)

[isuzurover]

Dynamic tyre balancing materials like this have been around for years - plastic, glass (+ceramic), steel and lead beads have and or are still being used. Plus a range of liquids...

There are several competing products.

The offroad comp guys and those who run big wheels use these type of componds regularly.

On a series though I can't see why you would need it, and I wouldn't run it in tubes personally.