[TR] Wheel Shimmy

[Randall]

> Do not invest 
> another dollar  in this shimmy issue without packing them up 
> and sending them off to Hendrix  Wire Wheel.

A very good point.  Another, less severe approach is to see exactly how they
mount the wheels on the machine.  The wheels MUST be gripped by tapered
cones with the same taper and resting on the same surfaces as the cone parts
of the spline adapter and knockoff.  The other parts of the hub are not
necessarily true to anything, so truing with (for example) a convex (male)
cone on the outside of the wheel is apt to make it worse rather than better.
The proper cones are very rare, especially outside of places that specialize
in wire wheels (like Hendrix and Valley Wire Wheel in Van Nuys, CA) but they
do exist.

Another good question to ask is how much runout do the wheels have, in 2
different axes.  They are never just "true", there is always some runout,
both radial and lateral, and if your shop doesn't know this (and know the
number), they don't know what they are doing.

Randall