Good vibrations

Hi folks,

I thought I might share this one with you.
After years of trying to track down vibes after lifting the Syncro, I seem to have eliminated it. Tyres out of round both on the same side.
By simply doing a tyre swap it's knocked out the last 15% of what was a very annoying vibration. Cost was about 20 mins of my time.
That was after cv's, prop shaft balance and realignment, etc etc.

Why didn't I think of that in the first place. Because I assumed tyre shops would pick it up . Wrong.

Mark

Mark, I've been working on a thesis about tyre vibrations while commuting on the Hume Highway between Goulburn and Yass.

  When I join the highway and wind up to 110 the van rattles and hums like the tailshaft has the heebie-jeebies, I can hardly hear the radio, and the van struggles to maintain cruising speed.

  After 20 kilometres everything has smoothed out nicely and we're humming along easily.

  By 40 k's I'm bopping to the music with one eye on the speedo so she won't bust 120.

  By 60 k's it's so smooth and quiet that I could be in a space shuttle on the dark side of the moon, with the speedo hovering at warp speed.

  I'd like to be able to tell you that I have to pull up the handbrake a couple of notches  by the time I get to Yass, but I'm hampered by the truth.

  I think if I carried on to Melbourne I'd probably lose my license or wear out the brakes.

  So here's the theory ...

  All-terrain light truck tyres develop 'flat spots' when parked overnight, and take a while to regain perfect roundness. The heavier-duty the carcass, the more obvious it becomes.

  An aggressive tread pattern with uneven wear further aggravates the problem.

  When Uniroyal brought out the first steel-belted radial tyre, the "Steel Cat", back in the 1970's, they spent a lot of time and money explaining this phenomena to disgruntled customers. I was one of them.

  Not long ago I had to toss out my well-loved BFG's when one of them went 'out of round' after several years.

  I jacked up the car and spun the wheels, caressing the rubber. It brought a lump to my throat when I felt the tell-tale growth. A terminal case, requiring the painful excision of a large swelling from the wallet.

  Try a set of light duty highway pattern tyres and feel the difference - like swapping a sumo wrestler for a ballet dancer!

                                                 Cheers, Roger [Beetle] Bayley.

 


>
> When Uniroyal brought out the first steel-belted radial tyre, the "Steel
> Cat", back in the 1970's, they spent a lot of time and money explaining
> this phenomena to disgruntled customers. I was one of them.
>

The tyre that killed many people.

One of the most rubbish tyres ever made.

I had 4 of them go off on my '74 Kombi and my father had them go off on his 200B. OE tyres on Australian made cars.

Phill
re
" When Uniroyal brought out the first steel-belted radial tyre'
 
I'm sure Michelin had radials in Europe well before that.
60's , even late 50's - on Citroens, for example. I'e owned a few, a 1959  ID-19 for the first one. . Impossible for them to not have radial tyres.
- the famous Michelin X  radial tyre. 
 
I've seen quite a few tread separations on the Continental TSS model tyres fwiw.
 
----- Original Message -----
Sent: Monday, July 04, 2011 1:17 PM
Subject: Re: Re: [Syncro_T3_Australia] Good vibrations

 


>
> When Uniroyal brought out the first steel-belted radial tyre, the "Steel
> Cat", back in the 1970's, they spent a lot of time and money explaining
> this phenomena to disgruntled customers. I was one of them.
>

The tyre that killed many people.

One of the most rubbish tyres ever made.

I had 4 of them go off on my '74 Kombi and my father had them go off on his 200B. OE tyres on Australian made cars.

Phill

I think that he meant "their first steel belted..............."

And then the Australian factory was bought by Bridgestone, and rubbish continued.



> Scott Daniel - Turbovans <ScottDaniel@turbovans.com> wrote:
>
> re
> " When Uniroyal brought out the first steel-belted radial tyre'
>
> I'm sure Michelin had radials in Europe well before that.
> 60's , even late 50's - on Citroens, for example. I'e owned a few, a
> 1959 ID-19 for the first one. . Impossible for them to not have radial
> tyres.
> - the famous Michelin X radial tyre.
>
> I've seen quite a few tread separations on the Continental TSS model
> tyres fwiw.
>
> ----- Original Message -----
> From: plander@optusnet.com.au
> To: Syncro_T3_Australia@yahoogroups.com
> Sent: Monday, July 04, 2011 1:17 PM
> Subject: Re: Re: [Syncro_T3_Australia] Good vibrations
>
>
>
>
> >
> > When Uniroyal brought out the first steel-belted radial tyre, the
> "Steel
> > Cat", back in the 1970's, they spent a lot of time and money
> explaining
> > this phenomena to disgruntled customers. I was one of them.
> >
>
> The tyre that killed many people.
>
> One of the most rubbish tyres ever made.
>
> I had 4 of them go off on my '74 Kombi and my father had them go off
> on his 200B. OE tyres on Australian made cars.
>
> Phill
>
>
>
Yes, this is Australia though, the wheel was not invented here untill 1940.

From: Scott Daniel - Turbovans <ScottDaniel@turbovans.com>
To: Syncro_T3_Australia@yahoogroups.com
Sent: Tuesday, 5 July 2011 7:43 AM
Subject: Re: Re: [Syncro_T3_Australia] Good vibrations

 
re
" When Uniroyal brought out the first steel-belted radial tyre'
 
I'm sure Michelin had radials in Europe well before that.
60's , even late 50's - on Citroens, for example. I'e owned a few, a 1959  ID-19 for the first one. . Impossible for them to not have radial tyres.
- the famous Michelin X  radial tyre. 
 
I've seen quite a few tread separations on the Continental TSS model tyres fwiw.
 
----- Original Message -----
Sent: Monday, July 04, 2011 1:17 PM
Subject: Re: Re: [Syncro_T3_Australia] Good vibrations

 

>
> When Uniroyal brought out the first steel-belted radial tyre, the "Steel
> Cat", back in the 1970's, they spent a lot of time and money explaining
> this phenomena to disgruntled customers. I was one of them.
>

The tyre that killed many people.

One of the most rubbish tyres ever made.

I had 4 of them go off on my '74 Kombi and my father had them go off on his 200B. OE tyres on Australian made cars.

Phill


Your right, Scott.

  Michelin and Pirelli were selling radial tyres for years before Uniroyal. The context of the comment was that the Uniroyals were the first to become infamous for "flat spotting" when parked, causing vibration issues.

                                                                         Roger Beetle

I see.
it has been my experience that non-radial tires ..
at least they used to , do that.
where I went to high school in Minot, North Dakota..
where it could be below zero for two weeks sometimes..  ( below zero Farhenheight )
the tires would thump thump thump for a few miles.
 
they're running shows on the two areas of Australia on National Public TV here late at night..
both are in the far north ..
one area, very remote..name starts with a "K' ..
the other one was west of there .
very undisturbed orignal australia evedently.
 
any tire as a tiny affect of being flat for a short time.
try rolling a van by hand on pavement..
it will want to roll back to 'the spot' where it was, unless you roll well beyond the bottom flat area.
 
but it's not a problem like it once was of course.
I think I got michelin radials on my first car as soon as I heard about their existence.
everyone had non-radials back then.
 
scott
 
----- Original Message -----
Sent: Monday, July 04, 2011 7:34 PM
Subject: Re: [Syncro_T3_Australia] Good vibrations

 

Your right, Scott.

  Michelin and Pirelli were selling radial tyres for years before Uniroyal. The context of the comment was that the Uniroyals were the first to become infamous for "flat spotting" when parked, causing vibration issues.

                                                                         Roger Beetle