Reyd Dorakeen wrote: whats the difference between the nova 3000, and the
nova DVR?
^^^^^^^^^^^^^^^^
The main difference is in the drive. The 3000 uses a fairly conventional
belt drive, with step-cone pulleys--the motor can be either a constant speed
induction motor, or a variable speed motor.

On the DVR, the motor shaft IS the spindle--no belt drive at all. The motor
is a radical design, using iron vanes in a rotating magnetic field. The
field is produced by a set of stationary coils connected to a computer,
which feeds pulses to the coils to produce the rotational speed and torque
called for by the operator. The REALLY interesting thing about it is that
the field rotates in a direction OPPOSITE to the rotation of the armature.
I'm not going to try to explain that--you can see it on their website,
though.

Owners report that the rotation is so smooth and vibration-free that they
get extraordinarily smooth cuts.

I understand that the DVR has a much improved tailstock (over the 3000.)