Voodoo air racing - prop balance

Balancing Benefits

Vibration is hard on your aircraft and passengers. Vibration causes fatigue cracks, premature instrument failure, accelerated bearing wear, and even consumes engine power.

The Process

Measure - Adjust - Repeat

Balancing a propeller is a lot like balancing the tires on your car. Sensors measure vibration magnitude and use precise timing to determine where weight is needed.

  1. Mount the sensors: Accelerometer and Optical Tach
  2. Run the engine up to cruise or maximum static RPM
  3. Press the acquire button on the balancer to hold the reading
  4. Add/remove weight at the indicated location, reported by the balancer as an angle or bolt number
  5. Repeat until vibration magnitude is at an acceptable level
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DynaVibe Classic vibration display

DynaVibe Classic - Pure Simplicity

Simple Readings:

(from image above)
Rotational Speed: 2309 RPM
Vibration Magnitude: 0.90 IPS (Inches Per Second)
Heavy Location: 132° from the accelerometer reference location

How To Balance:

Remove weight from the 132° location because it is too heavy.
Or add weight at 312°, directly across from the heavy location.

Repeat process until the vibration is below 0.10 IPS

DynaVibe GX2 weight addition display during balancing

DynaVibe GX - Save Time

Intelligent, Automated Solutions

The GX gets smarter with each run and learns how your specific aircraft responds to weight adjustments.

The GX tells you precisely how much weight is needed, and where. Automated solutions mean fewer runups and less time per balance.

Spectra Analysis

Sometimes the source of vibration isn't just the propeller assembly. Looking at the full spectrum of frequencies can help pinpoint each vibration component by considering the frequency ratio to propeller RPM.