At North Harbor Propeller we offer our customers the choice of Dynamics Research 602 Multi-Plane Computerized Dynamic Balance System, or the industry standard vertical plane Static method, using
top of the line sealed mechanical bearing rollers, and solid tapered
plug type straight shank arbors. A propeller may be in perfect static balance and still not in a balanced state when rotating at high speeds. To correct  dynamic unbalance, the use of a true multi-plane dynamic balance analyzer is recommended.

The Dynamics Research Balancing Machine uses a computer and
an analog to digital conversion system to gather data and perform
the mathematical equations necessary to determine the amount of unbalance in one or two pre-selected planes using the influence coefficient method of balancing. This method provides precise correction indications with minimal cross effect.

The amount of unbalance is displayed digitally on a Color Monitor
along with a graphic display of the angle of correction, Unbalance
is shown in oz-in, gm-in, gm-mm, mils displacement, or in/sec
velocity to name a few.

Both the addition as well as the subtraction position angles on
the work piece are indicated on the screen.

The angular position of the work piece is displayed on the Color
Monitor in Degrees. This angle is determined using a zero reference mark on the shaft end and an encoder on the motor shaft. This
locates the position for precise correction on the work piece.

Background vibration is eliminated by a digital tracking filter that is automatically tuned to rotational speed by the fiber optic phase indicator. All data is collected automatically without operator input.
End thrust is limited with an easily adjustable anti-friction end stop which moves with the work piece thereby not restricting motion generated by unbalance.