Re: vibration at 65 mph?

[Mike & Deb <lefevre@xxxxxxxxxx>]

Hi Jim,
Many moons ago the dealership I worked at had a spin balancer that 
balanced wheel/tire/drum all together. If I recall the machine was built 
by Hunter. They were sort of dangerous but balanced very well. You might 
find an old shop that still uses one.
Mike LeFevre















On 7/14/2011 11:03 AM, Jim Altemose wrote:
> On my 63 Polara 500 I recently replaced my front drums, brakes and
> bearings.  I'm now getting a 'vibration' between about 62 and 68 mph.
> On my recent 500 mile journey to Carlisle I had plenty of chance to
> feel the symptom.  Up until 60 mph, the car is smooth as silk.  At
> about 62 and up to 68 or 70, I get a noticeable, general vibration.
> It's not terrible and doesn't feel damaging or unsafe, but it's enough
> to be annoying.  From 70 to 80, it lessens and is barely noticeable
> and much more tolerable.  Here's the sequence of things I've done:
>
> 1. Old tires, old drums, etc. - Smooth at every speed.
> 2. Replaced front hubs, drums, shoes, springs, bearings.  Used what I
> think are high quality American made brand new drums and Timken
> bearings.  This is when the 65 mph vibration became noticeable,
> including with the old tires.
> 3. Replaced the old tires with new BFG radial T/A.  Still vibrates.
> The new tires and wheels were balanced.
>
> The control arms and bushings and such are all old and worn; that may
> be next Spring's project.  The shocks are old and I'm going to replace
> them soon.
>
> What are some things to look for and what corrective actions can I
> take?  Should I have an alignment done?  Is there a way to balance the
> drums with or without the wheels and tires?
>
> As always, thanks.
>
> - Jim
> Jim Altemose, Long Island, NY
> '63 Polara 500 (Max Wedge)
> '63 Polara 500 (383)
> '65 Belvedere I (Street Wedge)
> '71 Bronco

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