vibration/shudder at 70 - possible alternatives (other than wheel balance?)

[juliemac57@hotmail.com (Julie Macfarlane)]

Allyn wrote:
>And if u balance the tires they should be at zero on both sides.
Balanceing the tires will never get rib of the bounce if the tire or rim is 
out of round. Identify the rim and replace it.
OR
If its the rim that was worked on, take it back.

Good luck



Julie Macfarlane
Menlo Park Research & Development
Internet Application Developer
www.menloparkrandd.com
www.montgomeryweb.org
Amsterdam NY





>From: der flo <derrickmd18@juno.com>
>To: amalventano@sc.rr.com
>CC: rocco16v@netzero.net,abatzis2@hotmail.com,scirocco-l@scirocco.org
>Subject: Re: vibration/shudder at 70 - possible alternatives (other than 
>wheel balance?)
>Date: Thu, 24 Apr 2003 07:00:47 -0400
>
>If your tires are out of round then theres your problem.  I brought some
>rims with tires and they was out of round and I had your same probem.
>And if u balance the tires they should be at zero on both sides.
>
>On Thu, 24 Apr 2003 01:20:55 -0400 "Allyn" <amalventano@sc.rr.com>
>writes:
>i agree with this theory, but i just shot it out of the water tonight ---
>i put in a fresh set of rebuilt half shafts. while it did help the issue
>slightly, the shudder at 70 is still there. over the past week of
>narrowing the problem down, i have these facts remaining:
>
>- vibration seems to be coming from front right.
>- front right is the wheel is the one i had sent off to the straightener
>(it came back *very* close to perfectally true.
>- jacked up front right and spun it (via engine). the wheel seems to be
>straight as it spins, but the tire seems like it may be slightly out of
>round. i'll have to check this out some more later.
>
>Al
>
>----- Original Message -----
>From: L F
>To: Michael Abatzis ; scirocco-l@scirocco.org
>Sent: Wednesday, April 23, 2003 7:33 PM
>Subject: Re: vibration/shudder at 70 - possible alternatives (other than
>wheel balance?)
>
>
>I gotta' chime in here fellas;  I've been driving cars for a lot of years
>and learned that a harmonic vibration most likely is NOT a wheel
>imbalance.
>  I'd lean towards CV joint or engine imbalance (I've had both of these
>situations result in harmonics)
>
>Larry
>sandiego16v
>----- Original Message -----
>From: Michael Abatzis
>To: scirocco-l@scirocco.org
>Sent: Tuesday, April 22, 2003 8:41 AM
>Subject: RE: vibration/shudder at 70 - possible alternatives (other than
>wheel balance?)
>
>
>try getting a mounted balance--the wheels are balanced on the car, so it
>essentially balances all that rotating mass (rotors, hubs, etc). my shop
>does it for $8 wheel. i had the wheels/tires balanced unmounted first,
>then
>mounted; i was amazed how much tweaking needed to be done with the
>mounted
>balance.  the car is lowered, and is rock solid as fast as i care to
>go...
>
>
>-Michael Abatzis
>Hotlanta! GA-->Soon to be New Orleans!
>1988 Scirocco 2L 16v RIP-->parting, finally taking orders:
>www.learnlink.emory.edu/~mabatzi/mikes_page1.html
>1987 Scirocco 2L 16v...
>
>
>
>
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