Place steering cables and place 3x50mm balsa on top and sand flush.
Now start sheeting the fuselage top with the 2x12mm balsa, start at the fuselage at FMC and work your way to
the top of the fuselage.
Sand flush sheeting with the 3mm balsa top sheeting, and place last layer of 3mm balsa top sheeting,
Place 2x F0 and sand to shape Sand the inside of the paper duct flush with the airintake
the fuselage top can be sanded now.
Assembling the wings at the fuselage, and check alignment with rudder.
Place DF0, DF1, DF2 and place the 4mm wing dowels, the fan unit should be placed also for alignment.
Make a 4mm opening for the wing fastener and drill and tap WF1.
When alignment is ok glue the formers to the wing.
Sheet the bottom cowl with 2x12mm balsa and sand flush with the forward part of the fuselage.
The complete fuselage can be sanded now.
Cut out a small (2mm) opening for taking the bungee launch hook and glue in the launch hook.
Construct the elevator from the cnc cut parts and formers EJ1 chamfer the elevator parts a bit for better joining.
Check for alignment and glue to rudder.
Place servo horns in elevator and ailerons etc.
The elevator servo is glued to MFC at some scrap balsa; the 2 steering cables are soldered into 1 at the servo
location.
Cut out canopy and glue to fuselage; do not forget the pilot.
Finish:
Advice is to use lightweight glass 25gr/dm2 for the fuselage; the wings can be finished with Japan paper
Flying:
Use the throws as given on the drawing or a bit less, I like big throws.
Use a bungee as recommended hand launch will fail.
The Yak 23 is an easy flyer but fast, landings need a lot of room to bleed of the airspeed.
Good hunting
