Dynabeads ? Errrrrm WTF

[weeksy]

https://www.dynabeads.co.uk/dynabeads_how.php

Have i missed something here ?

[cheb]

As one who doesn't bother balancing tyres anymore, and have had no problems because of that, I'd say this is a marketing opportunity in search of a problem.

[weeksy]

As one who doesn't bother balancing tyres anymore, and have had no problems because of that, I'd say this is a marketing opportunity in search of a problem.

well, apparently they've been around for 20 years... so not much of a marketing thing gone on.

[Mussels]

I think they have been around longer than that, I looked at something very similar in the 90s but didn't use it. That was the last time I've been bothered about tyres out of balance so it may be manufacturing has improved.

[iansoady]

As said, they've been around for a long time and users swear by them. I still can't see how they can possibly work however as I would have thought tht the heavy spot on the wheel would tend to throw them outwards at that point.

Nobody ever likes to admit they've been conned however as shown by the numbers of people who still buy magic fuel "catalysts".

[JackyJoll]

I don’t understand the principle either, but would some water in the tyre do the same thing, whatever that thing is?

[cheb]

As one who doesn't bother balancing tyres anymore, and have had no problems because of that, I'd say this is a marketing opportunity in search of a problem.

well, apparently they've been around for 20 years... so not much of a marketing thing gone on.

The same as frozen youghurt as a replacement for ice cream then, they keep trying. If they succeed they'll be an overnight sensation.

Biking demographics have changed, maybe they'll find a market with the more money than sense determined to win track dayers. You'd have to weigh the pros and cons, better balanced wheels therefore smoother, but the extra unsprung weight must have negative consequences.

[Horse]

I don’t understand the principle either, but would some water in the tyre do the same thing, whatever that thing is?

There is/was a tyre puncture sealant ('Slime'?) that IIRC was supposed to do the same whilst it waited, patiently waiting for a puncture the happen.

Re not balancing, I've lost a front wheel weight and, at speed, it was like holding a jackhammer.

[Taff]

I don’t understand the principle either, but would some water in the tyre do the same thing, whatever that thing is?

There is/was a tyre puncture sealant ('Slime'?) that IIRC was supposed to do the same whilst it waited, patiently waiting for a puncture the happen.

Re not balancing, I've lost a front wheel weight and, at speed, it was like holding a jackhammer.

I used to use slime in my enduro bike tubes, it would counter balance the rim locks and made a real difference when riding on the road. (Green Laning in Somerset involved quite a lot of road work between the lanes)

[Rockburner]

I don’t understand the principle either, but would some water in the tyre do the same thing, whatever that thing is?

There is/was a tyre puncture sealant ('Slime'?) that IIRC was supposed to do the same whilst it waited, patiently waiting for a puncture the happen.

Re not balancing, I've lost a front wheel weight and, at speed, it was like holding a jackhammer.

Yes - I've used SLIME (and UltraSeal - similar thing), and yes that was teh blurb.

TBH I couldn't tell you if it 'rebalanced' the wheel because I always had the wheels properly balanced when I fitted new tyres anyway. It only made it WORSE when I accidentally 'double-filled' the front one year (I'd forgotten that I'd filled the front with the correct amount, and then filled it again just before a VD Easter tour. ). The front got pretty bad at high speeds (above 70).

[JackyJoll]

I've had a tyre fitter have a tantrum about unexpected sealant

He should always expect the unexpected (Grasshopper).

Tell him to shut up and fit the tyre.

[Rockburner]

I've had a tyre fitter have a tantrum about unexpected sealant

He should always expect the unexpected (Grasshopper).

Tell him to shut up and fit the tyre.

They don't like having to clean up the mess.

TBH as long as you forwarn them, it shouldn't be a problem.

The main issue is that a lot of them never would accept that Slime and Ultraseal were NOT the same as 'Finilec' or 'Tyre-Weld', and as soon as you told them the tyre had 'slime' in it, they would think it had Finilec and refuse to remove it - because they assumed it would throw itself everywhere, which finilec/tyre-weld DOES do, and it's sticky and horrible. Slime and Ultraseal don't do that, are easy to clean up with water, and don't make much mess anyway, but sometimes you simply can't persuade someone of that.

[1913]

I remember seeing the concept model being presented on Tomorrows World in the late 70's.

I use Slime as a matter of habit, I read the instructions with great interest and ignore them.
Only there for product liability avoidance.

My VTEC rear got stabbed by a nail 3 days before I had to go to a conference in York. I treated it with an old bottle of Slime I had in the back of the shed. It took me from the midlands to York and back without a problem. By the time I had to replace the tyre it had done a track day, 3 overloaded trips to Cornwall and back and all my usual weekend riding.

Did not notice any wheel balance issues.

[Taipan]

Been around for years and yes, I've met people that swear by them. I used to remove ugly wheel weights, so they probably should be a good idea for me! I took a tyre off once and wondered wtf the little balls were. I wondered if it was the tyre delaminating and centrifugal force had rolled up the tyre pieces!

[mangocrazy]

I've used an equivalent (EasyBalance powder) for the last 12 years or so. You stick about 100g in the front, 200g in the rear and no balance weights ever sully your lovely wheels again. So either I've been very lucky with wheel balance, or wheels/tyres are just much better balanced anyway these days, or they actually work. To be honest I really don't care.

I've had zero instances of out of balance vibes, it's quick and easy when I'm fitting tyres to rims to bung the correct amount of powder in, I don't need to faff about balancing a wheel and I don't have to remove the old weights every time I change a tyre. As far as I'm concerned it's a win-win. The only bike I can't use it on is the old LC, as that needs tubes in its tyres.

Have I mentioned that I really hate inner tubes?

[Mr Moofo]

Centripetal acceleration will be the same on all the beads. They will be flung out to the centre point of the tyre - furthest away from the hub. It won't be affected by the balance or lack of balance.

Or an I missing something ?

[iansoady]

That's what I thought. I still await someone telling ushow they actually work.

[Mussels]

Centripetal acceleration will be the same on all the beads. They will be flung out to the centre point of the tyre - furthest away from the hub. It won't be affected by the balance or lack of balance.

Or an I missing something ?

The beads will be affected by vibrations, the effective centre point could also be affected by vibrations. I'm guessing the dynamics of an unbalanced wheel are a little more complicated but not sure of why or if it would work.

[wull]

I seen the word “beads” and thought of something else

[Taipan]

I'm none the wiser for this...



Are they sold by Hillside Tuning?