Why doesn't the motor stop on the Nebula when I cut the power?
The Nebula employs a direct drive system, meaning there is no resistance on the motor. Inertance from the motor will cause it to slow down to a stop instead of stopping right away. Because direct drive rotaries move the needle up and down in a circular motion, motor inertance explains why the needle doesn’t come back sometimes. This is true for all direct drive rotary machines.
On the other hand, our Matrix and Azur machines have other components on the machine, such as the slider, cam, spring, etc, that create more resistance against motor inertance. This explains why the motor stops right away on those machines.
In general, different working systems have their own set of advantages and disadvantages. Tattoo machines with a direct drive system are generally more powerful and if used incorrectly, can cause more damage to the skin while tattooing.