Jack,
I have been driving my friends BN4, on and off, while he is deployed on
active duty. It had
a bad shake around 55 - 60 mph, even after the wheels had been balanced
off the car. I
then took the car to an alignment shop that has been around forever,
where they actually
knew what a Healey is, and had the wheels balanced on the car. Not only
is 98% of the
shake gone, but he also fixed the pulling problem. I have always been
told that the only way
is to balance them on the car. Thanks.
Regards,
Doug
'56 BN2
> Ron, tremendously sorry but dynamically balancing on the car is
> absolutely impossible, unless you change the definition of dynamic
> balancing. For dynamic balancing it is imperative to very accurately
>
> measure the various forces trying to tilt the wheel, and that can
> only
> be done when you fit the wheel on a dynamic balancing machine. You
> have
> to realize that a dynamic balancing machine measures the sideways
> forces
> which tend to bring the wheel in a wobbling motion, not only the
> vertical force created by the spinning of the wheel. It is the
> capability to calculate the exact weights and the exact spots on
> both
> the inner and the outer rim of the wheel that makes the difference
> between dynamic and static balancing. A person who claims he can do
>
> dynamic balancing while the wheel is still on the car doesn't know
> what
> he's saying. I've been in the tire business long enough to know what
> can
> be done and what can't be done! If you are looking for the best
> solution to a problem you first have the wheel with the tire
> dynamically
> balanced, then fit it to the car and then do a static second
> balancing
> run to eliminated drum unbalance. And if you have the time and the
> tire
> merchant is willing, have the wheel + tire matched. That means you
> do a
> first dynamic run, mark the wheel and the tire and note the
> suggested
> weights, rotate the tire 45 degrees over the wheel, balance again
> and
> note the weights again and so on. After 4 readings you can estimate
>
> which position requires the smallest weights. Fit those weights,
> mount
> the wheel on the car and do the static balancing, and don't show
> your
> face their again for the next few years because the guys there will
> hate
> your guts....
>
> Jack Aeckerlin, The Netherlands
> 1964 BJ8 29432
|