Freefly ALTA8, Flight Manual

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115 | AIRCRAFT FLIGHT MANUAL
MOTOR ALIGNMENT
ALTA 8’s motors are aligned at the factory at an angle of ±2.5° relative to the chassis.
This slight angle improves aircraft yaw authority and reduces the possibility of
clockwise and counterclockwise turning motors from spinning at different speeds
during stable hover. This alignment can be lost when opening the ALTA 8 chassis or
if a boom needs to be replaced.
If the motors need to be realigned, follow the realignment procedure, then verify
realignment was successful using the ALTA Flight Data Viewer, available at
www.freeflysystems.com.
To perform a realignment, Freefly recommends using a small digital angle gauge
with a flat surface so it can rest on the bottom of the motor mount (for example, the
Wixey WR300 angle gauge).
MOTOR REALIGNMENT PROCEDURE
1. Place ALTA 8 on a level surface.
2. Place a digital angle gauge on the chassis next to the boom facing outwards.
3. Zero the angle gauge.
4. Starting at motor 1, place the digital angle gauge on the flat surface of the
motor mount with the gauge facing outwards.