18 JANUARY/FEBRUARY 2020 SPORT ROCKETRY
Spruce Lever
1/16 in. 1/4 in.
Spruce Standoff
1/16 in. 1/4 in.
Balsa Bulkhead
1/32 in. 22 mm
Du-Bro #118 Small
Modified by cutting
replacing pins
wire.
Nose
Constructed
Commercially
Components,
Foam Plug
EPS foam
Must be
Gyrocopter
nose assembly
and both
cone on
Plywood
1/64 in.
Aluminum
Length 1/8
Dihedral Angle 10°
A
View of Complete Gyrocopter
SCALE 2 : 5
Gyrocopter Shaft
0.06 in. nominal diameter carbon fiber, length is 12 in.
Some fliers use 0.04 in. nominal diameter.
Wrap shock cord around carbon fiber and glue with cyanoacrylate.
Some fliers will extend length to past blade tip and install shock cord
mount.
S9 Gyrocopter Plans
2019 Sport Rocketry Plans
Drawn by: Doug Hillson NAR #61624
Dimensions: [in.] mm
Detail A
SCALE 4 : 5
Install three 5/16 in. dental
rubber bands during
assembly.
Aluminum Tube
Length 1/2 in.
Secure with tape and do
not glue to allow for hub
removal.
Hub assembly should freely rotate on
the gyrocopter shaft.
The aluminum tube in the hub will
spin between the 1/8 in. length tube
and the 1/2 in. length tube.
Reinforce hub with nylon thread
wrapped around hinges and
spruce components.
