Alternative wheel balancing methods

merlin · 15 May 2008 at 09:22

http://www.innovativebalancing.com/service.htm

Interesting. Personally I never knew anything about balancing with beads, I thought the only way to balance a wheel was with weights.

Why have beads not made wheel weights a thing of the past?

excaliborg · 15 May 2008 at 09:28

I can see how it works, as in a thin part of the inside of the tyre would get filled due to centra-petal force however I'm pretty sceptical of it.

penski · 15 May 2008 at 09:47

Very interesting indeed.

I wonder if they work dynamically or if they will actually stick to the tyre...

*n

paradigm · 15 May 2008 at 09:56

Am I the only person who lauged at "bead lube"?

Siliconslave · 15 May 2008 at 10:00

penski said:
Very interesting indeed.

I wonder if they work dynamically or if they will actually stick to the tyre...

*n

sounds like they move around inside the tire from the site:
"derived from our balancing media that is always repositioning itself as the tire wears"

sounds all a little dodgey to me, things moving around in the tire can't be a good thing at lower speeds can it??

Tesla · 15 May 2008 at 10:08

Will they erode the inside of the tyre/rim?

paradigm · 15 May 2008 at 10:12

Thinking about this concept, the wheel would still need to be conventionally balanced, as even if the beads moving due to centripetal force balance the tyre round its circumference, nothing is going to be balancing the tyre or rim left/right.

merlin · 15 May 2008 at 10:15

Do wheels need a left/right balance? I thought it was just a rotational balance?

Firestar_3x · 15 May 2008 at 10:18

Yes, you get weights on the inside and outside edge of the rim to sort this.

therealnerd2 · 15 May 2008 at 10:26

paradigm said:
Am I the only person who lauged at "bead lube"?

I admit failure

Muncher · 15 May 2008 at 10:29

merlin said:
Do wheels need a left/right balance? I thought it was just a rotational balance?

Yes, on the VX withour left/right balancing there is horrendous vibration through the wheel.

Dogbreath · 15 May 2008 at 11:58

We do not recommend Dyna Beads in these situations:

...in any (motorcycles excluded) low-profile performance tire except as a Maintenance Level application. A low-profile tire is generally defined by an aspect ratio below 70, such as "225/60 R15". See our Low Profile Policy.
This only applies to cars, SUV's & pickups.

paradigm · 15 May 2008 at 12:02

Low profile is under 70, lol. Anything over 50 looks like a baloon!

Dogbreath · 15 May 2008 at 12:24

excaliborg said:
I can see how it works, as in a thin part of the inside of the tyre would get filled due to centra-petal force however I'm pretty sceptical of it.

No, it has nothing to do with the thickness of the tyre, this system works purely because the suspension on a car has enough compliance that the out of balance forces can physically move the center of the wheel, i.e. the center of rotation is not actually at the wheel bearing any longer. Due to gyroscopic precession, the out of balance force will be displaced around 90 degrees from the heavy spot, and this is where the beads will want to move to. As they move, the effective "heavy spot" also moves towards the beads, making the beads move further away from the actual heavy spot, until the system is stabilised with the beads somewhere opposite the actual heavy spot.

If the wheel/tyre was mounted rigidly enough, this system wouldn't work and the beads would probably tend to clump in the heavy spot at high speeds making things worse.

Dogbreath · 15 May 2008 at 12:27

paradigm said:
Low profile is under 70, lol. Anything over 50 looks like a baloon!

It's perfectly correct though, 70 or under is considered low profile as a "standard" radial tyre (i.e. with an aspect ratio marking) has an aspect ratio of around 80%.

penski · 15 May 2008 at 12:30

Dogbreath said:
It's perfectly correct though, 70 or under is considered low profile as a "standard" radial tyre (i.e. with an aspect ratio marking) has an aspect ratio of around 80%.

Yup - if you see a tyre labelled without an aspect ratio (eg 155/13, 165/14) then it will be 80%.

*n

easyrider · 15 May 2008 at 12:31

paradigm said:
Am I the only person who lauged at "bead lube"?

No

jaydee · 15 May 2008 at 23:20

Hey Dogbreath. Good try on the precession theory but unless I miss my mark that man's outa uniform and your theory's flawed.

Here's why matey. I just read a descriptor of precession. Sounds like precession is actually defined as a change about the axis of a rotating mass. Looks like it's angular change which causes the 90 degree pro-rotational effect. Which basically means an outa balance wheel might bounce but there can't be a 90 degree effect.

As for the innovative new balancing beads gizmo, some years ago I worked on similar schemes to devise self-balancing systems and eventually concluded that if it was that easy industry would have done exactly that. My guess is the suspend some beads in spooge ain't new and won't work. It probably is what it is - a load of balls.

I nominate James Dyson for madhatter of the year award for reinventing the blindingly obvious - his latest TV ad campain claims he's invented a vac with a ball on the front and claims it's a fabulous new gizmo. Whereas in reality it ain't. Years and years ago you could buy garden barrows with a ball on the front...!! How plagiaristic is that y'all....!!! The entire resources of Dyson Research have come up with.. wait for it.. wait for it... nudda. zip. nuthin'...

That beans in spooge thanggg ain't Dyson n'all is it??

penski · 16 May 2008 at 06:44

jaydee said:
Hey Dogbreath. Good try on the precession theory but unless I miss my mark that man's outa uniform and your theory's flawed.

Here's why matey. I just read a descriptor of precession. Sounds like precession is actually defined as a change about the axis of a rotating mass. Looks like it's angular change which causes the 90 degree pro-rotational effect. Which basically means an outa balance wheel might bounce but there can't be a 90 degree effect.

As for the innovative new balancing beads gizmo, some years ago I worked on similar schemes to devise self-balancing systems and eventually concluded that if it was that easy industry would have done exactly that. My guess is the suspend some beads in spooge ain't new and won't work. It probably is what it is - a load of balls.

As far as I can tell, the beads aren't suspended in anything? And the theiry works in the same way as liquid harmonic dampers.

I nominate James Dyson for madhatter of the year award for reinventing the blindingly obvious - his latest TV ad campain claims he's invented a vac with a ball on the front and claims it's a fabulous new gizmo. Whereas in reality it ain't. Years and years ago you could buy garden barrows with a ball on the front...!! How plagiaristic is that y'all....!!!

You mean the DYSON ballbarrow...? :rolleyes:

The entire resources of Dyson Research have come up with.. wait for it.. wait for it... nudda. zip. nuthin'...

That beans in spooge thanggg ain't Dyson n'all is it??

Do you speak English?

*n

Tesla · 16 May 2008 at 07:50

jaydee said:
I nominate James Dyson for madhatter of the year award for reinventing the blindingly obvious - his latest TV ad campain claims he's invented a vac with a ball on the front and claims it's a fabulous new gizmo. Whereas in reality it ain't. Years and years ago you could buy garden barrows with a ball on the front...!! How plagiaristic is that y'all....!!! The entire resources of Dyson Research have come up with.. wait for it.. wait for it... nudda. zip. nuthin'...

This is hilarious! Who do you think invented the ballbarrow?