Pilot Operating Handbook
Cavalon Pro
SECTION 9
SUPPLEMENTARY SYSTEMS
RotorSport _POH_Cavalon Pro
Revision 1.0 – Issue Date 12 04 2015
8-ix
8.15.3 Assembly of the Rotor System
1. The rotor blades, clamping profile and rotor hub are labelled with an engraved serial
number.
2. Insert the first rotor blade carefully into the clamping profile. Make sure that all serial
numbers match.
3. Fit the rotor hub side with the according serial number to clamping profile and blade.
Insert fitting bolts without using force so that the bolt end is on top when the rotor
system is installed. For re-identification and correct installation position the shaft
length is provided in the figure above. Example: 40/12 means shaft length 40mm.
4. Position the washers and the locknut and
hand-tighten all nuts.
5. Torque-tighten nuts with 25 Nm from the
inside to the outside, using a torque
wrench. When doing so, counter-hold bolts
to prevent any damage the hub and blade
holes.
6. Repeat steps 2 to 5 for the second rotor
blade.
8.15.4 Installation of the Rotor System
CAUTION
During installation make sure to have each and every part of the rotor system
installed in exactly the same way and orientation as it was before.
Secure the gyroplane on level ground by engaging parking brake, adjust the rotor head or
teeter tower corresponding to 30deg from fore-aft and pressurize the rotor brake up to
maximum. Secure a step ladder to the right side of the aircraft.
7. Check correct matching of parts: The rotor hub and the teeter tower are marked with
two dots according to the orientation for installation.
8. Lift the rotor blade with a second briefed person (standing either side of the aircraft).
9. Approach with the rotor system from the side to the gyroplane and make sure not to
collide with propeller or stabilizer The person fitting the rotor to the aircraft has the hub
bar on his shoulder, and climbs the ladder with the rotor across the aircraft. The rotor
is then lifted over the teeter tower and lowered into place.
10. The second person can let go, as soon as it is resting centrally in the teeter tower on
the teeter stops.
11. Insert teeter bolt by hand in the same orientation as it was before (bolt head should be
at that side of the teeter block which is marked with one dot) while matching the shim
washers with the corresponding installation positions.
12. Check direction of assembly and shim washers: rotor hub, teeter tower and shim
washers are marked on each side either with one or two engraved dots.
13. If the teeter bolt cannot be inserted, tilt the rotor blade along the teeter axis with the
free hand.
Position where serial numbers are
engraved (bottom side)