Trimming the trailing edge

1) Trim 13cm from the leading edge of the tip to the trailing edge of the root of the wing with a new sharp blade.

Prepare the wing for the stick mount

• Position the stick inline with the bottom of the wing and draw round it. Repeat for the other wing pannel
  
  
• Turn both wing pannels upsidedown and hold together. (it may be easier to do this by putting the wing partially in the protective casings they came in) Position the stick mount in the centre of the wing on the underside and draw round it
  
  

Cutting the channel for the stick mount

It is vital the channel is not cut too small as this will prevent the wing from being joined tightly. It is also important that the channel is not too big as the stick cannot be allowed to wobble.

Joining the wing panels

Glue the wing panels together

• spread PVA glue onto the both wing panel root sections and in the channels previously cut for the stick mount

Joining the wing panels (2)

Hold the 2 wing panels together tightly and install the stick mount.

• The masking tape must secure the wings together tightly with out any gaps, creating a strong join. If any gaps are visible, check that the stickmount isn't holding the wing apart

It is recommended that beginners do not place the COG behind the suggested position however experienced pilots may wish to experiment with rearward COG's to increase aerobatic performance

Mark the COG on the wing.

26cm from the leading edge at the root section.

Installing the motor mount

As the motor mount must slide over the stick mount some of the foam must be cut away from around the stick.
This will be obvious when you try and slide the motor mount over the stick

Battery pack installation

• Position your motor on the rear of the wing where it will be mounted and secure with tape
• Position your battery on the uperside, of the wing to balance this, preferably width ways on the nose
• When positioning the battery consider its orientation to minimize weakening the nose of the wing.
• Draw round the battery and cut the foam out with a sharp knife

Center bracing the under side of the wing

• Cut a channel in the foam between the joining of the main spars and the forward facing side of the stick mount.

This slot can be cut using a knife. Cut 2 parallel lines in the foam then carefully prize the foam out of the channel. It is easier to cut the channel by first sticking masking tape over the area you will be cutting and then cutting both the foam and the masking tape with a knife.

Repeat for the top surface of the wing

Position the first spar behind the battery bay and a second, if there is room, in front of the battery bay.

Finishing the wing

• Gently sand or plane the spars flush with the foam
• Sand the whole wing to give a smooth, dust free surface, for the tape to adhere to.

Finishing the trailing edge

• Wrap a piece of 2" sticky tape the entire length of both wing panel trailing edges.

Hinging the elevons

Elevons must be covered in the chosen colour before hinging

• Position the elevon on the top surface of the wing in line with the trailing edge
• Wrap a length of standard width clear sticky tape the full length of the trailing edge as shown

Hinging the elevons (2)

• Move the elevon to around 45 degrees down deflection.
• With another strip of sticky tape stick along the top of the wing and elevon (blue). Push this tape down onto the previous peice of tape so that there is no exposed sticky side of any tape.
• Check that the elevon moves freely.

Install the control horns

The holes in control horn must be positioned directly above the hinge line for precise movement of the elevon.
Install the control horns and glue in place

Bracing the wing

• Before attatching the strapping tape cut a indent in the trailing edge of the wing. This should be in line with the root of the elevons.
• Using the supplied strapping tape brace both top and bottom of the wing with pieces of tape as shown. Once the tape is positioned spread a thin layer of PVA over the tape.

When cutting out holes for the servos use a new, sharp blade, and ensure the servo fits tightly in the wing to achieve slop free control movement

Installing the serovs

• Hitec HS81 servos are reccomended however other servos of a similar size (18 grams) and quality may be used.
  
• It is recommended that the servos are installed on the top of the wing to avoid damage on landing.
  
• Position the servos so that the servo arm is perpendicular to the control horn attached to the elevon and as far forward in the wing as possible.

Do not position the reciever infront of the battery as this may cause it to become damaged after a nose in landing

Installing the ESC and RX

• Postion and then bury the Speed control in the position shown ensuring the wires will reach the motor and battery.
  
• Bury the receiver in the same way ensuring the wires from the servos and speed control will reach.
• Make a small slit 1mm deep spanwise in the wing to the wingtip so that the arial wire may be buried

Remove all radio gear apart from the receiver so that the arial wire may be covered over

covering the wing

• Cover the top half of the wing in coloured tape. Start at the trailing edge of the wing and work forward, covering spanwise.

Covering the bottom of the wing

• Repeat for the underside of the wing

Attatching the motor

• Attach the motor mount to the stick and screw in place
• Bolt the bell motor to the plastic mount.

Attatching the wingtips

• Using epoxy or UHU POR glue the wingtip onto the wing.
• Check with the supplied wingtip template that the centre line of the correx wingtip is aligned with the centre line of the foam wings tip. This should leave 3cm protruding under the wing at the pivot point where the elevon is attatched.

Installing the battery hatch

• Glue a piece of velcro using PVA into the battery bay and pin in place.
• Stick another piece of velcro onto your battery pack.
• Cut your hatch to a suitable size and hinge it in the same manner as the elevons.
• Glue and staple velcro to the other side of the hatch.
• Glue and pin another piece of velcro to the wing so that the hatch can be shut, after removing the relevant covering tape from this area.
• Once dry remove the pins.

These control movements are only a guide. If you find the wing too sensitive reduce the movements. If you want a more aerobatic model consider increasing the movements and then gradually move the COG further back

27) Control Movements

• Rest a ruler along the underside of the wing at the start/root of the elevon.
• Neutral trim should have 6mm of up. Measured from the centre of the 1/8" thickness elevon
• Both up elevator and aileron individually should have 12mm of up and down movement measured from the neutral position. This is a total of 18mm up when measured from the ruler positioned earlier and 0.6mm down

Visit your local flying field and let a BMFA instructor inspect the plane

Flying the wing

• The wing must be flown under the guide lines set out by the BMFA
• For the first flight get someone else to launch the wing. For safety reasons do not launch the wing with power on.
• Some pop bottle tops can be buried in the underside of the wing for launching.