Freefly ALTA8, Flight Manual

Page: 111 / 133

111 | AIRCRAFT FLIGHT MANUAL
The folding propellers are installed on the motors with four M3 × 8 socket head bolts.
CAUTION
Always use a threadlocking compound on the bolt
threads that attach the propeller hub to the motor.
Odd numbered booms (1, 3, 5 and 7) use clockwise rotating propellers when looking
from the top down, and even numbered booms (2, 4, 6 and 8) use counterclockwise
rotating propellers.
WARNING
Always check to ensure the correct propeller rotation direction
and correct propeller prior to flight. Propellers that spin in the
incorrect direction will cause ALTA 8 to be uncontrollable.
REPLACING PROPELLER BUMPERS
Under normal use, propeller bumpers (see exploded view figure on the next
page) may split and fall out of the folding propeller assembly. Six spare bumpers
are provided with the ALTA 8. To replace the bumper, disassembly of the folding
propeller is required.
Start by removing the M3 x 19 bolt and nylon nut. Pull off the upper prop adapter.
The two bumpers are held in place by cylindrical features in the lower prop adapter.
Replace the worn or split bumper with a new one.