--- "Clay, Dale" <Dale.Clay@mdhelicopters.com>
wrote:
> KT,
>
> If you're saying precession applies to all
> rotating systems, you're correct.
> But precession forces only occur when you are
> trying to change the axis of
> rotation. As long as you aren't getting camber
> changes, or toe steer, there
> would be no precession in a wheel moving up and
> down.
>
> Dale C.
>
May be true for front independent sprung wheel,
but with a solid rear axle if one wheel moves up
and down more than the other, (which is usually
the case) the wheel is moving through an arc, not
up and down, and that would invoke precession
forces. That would be minimal at normal
automobile speeds, but at Bonneville speeds,
depending on tire size and gears, some of those
wheels are spinning a relatively high speeds and
it could have a noticeable effect.
Dick J
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