propellor rigging photos

by Scooby
September 27, 2020October 5, 2020

Scoobys Airplane

factory documenation

For these measurements, the aircraft is placed in the neutral flight attitude (door sill horizontal), with the blade horizontal, and the pitch paddle vertical.

confirming the propellor hub is perfectly vertical before setting the prop pitch.

To measure the angle of attack of each blade I used my digital level as the primary instrument but double checked it using my digital protractor. Note that Whirlwind provides the shown pitch paddle specifically for measuring blade angle.

To measure the angle of attack of each blade I used my digital level as the primary instrument but double checked it using my digital protractor.

I swung the prop thru four revolutions to measure each blade four separate times. Each time I put blue painters tape with the measurement then took an average of the four measurements to get the final value. Show here are all three blades.

I swung the prop thru four revolutions to measure each blade four separate times. Each time I put blue painters tape with the measurement then took an average of the four measurements to get the final value. Show here are all three blades.

I swung the prop thru four revolutions to measure each blade four separate times. Each time I put blue painters tape with the measurement then took an average of the four measurements to get the final value. Show here are all three blades.

tightening order and torques used. installed new nord-lock washers.

To measure the propellor blade tracking, I put a board 1/8" under the prop tips then marked under each as I carefully hand rotated the propellor. Here is the first blade mark.

To measure the propellor blade tracking, I put a board 1/8" under the prop tips then marked under each as I carefully hand rotated the propellor. Here is the second blade mark.

To measure the propellor blade tracking, I put a board 1/8" under the prop tips then marked under each as I carefully hand rotated the propellor. Here shown are all three blade marks perfectly in line!