............. 1 pc
................. 1 pc
..................... 1 pc
Flat Head Screw, 2 x 8 mm
Steel Joint Ball
Hex Nut, 2 mm
Red
Flat Head Screw, 2 x 8 mm
Steel Joint Ball
Hex Nut, 2 mm
Attach the steel joint ball to 
the outside hole as shown.
5-11
STEEL JOINT BALL INSTALLATION
5-12
TAIL DRIVE SHAFT/TAIL GEAR BOX INSTALLATION
Red
4 pcs
Set Screw, 4 x 4 mm (4 pcs)
*Apply a coating of light oil to
    the O-rings of the drive shaft
       guide bearing.
Red
Red
4 pcs
Set Screw, 3 x 3 mm (4 pcs)
Socket Head Bolt, 3 x 12 mm
   * Do not tighten completely until 
      the gear box has been positioned correctly.
Set Screw, 4 x 4 mm
.......................... 4 pcs
.......................... 4 pcs
Set Screw, 3 x 3 mm
Socket Head Bolt, 3 x 12 mm
............. 1 pc
Use Red Threadlock
Tail Drive Shaft Assembly
Tail Gear Box Assembly
* Tighten after gear box has been aligned.
Attach the tail drive shaft to the tail 
gear box as shown using the 4–4 
mm set screws (use Threadlock). 
Please leave a very slight space 
between the drive shaft and the 
bearing of the tail gear box. 
Next, apply a light coating of oil to 
the drive shaft guide O-rings and 
install the assembly into the tail 
boom. To allow the tail gear box to 
be fully inserted into the boom, it 
may be necessary to rotate the 
front bevel pinion gear so the drive 
shaft can engage into the coupler.
Level the tail output shaft of the 
tail gear box so that it is 90 to the 
main rotor shaft, and lock the tail 
gear box in place using the 3 mm 
socket head bolts and 3 mm set 
screws as shown.
Vertical 
Fin
Note:
It will be neccessary to loosen the 4 bolts 
holding the vertical fin to allow the tail 
gear box to be inserted into the tail boom.