This page will describe how to build a flying wing, and other useful information related to its materials and components.

The wing should look something like this http://www.rcfjergfis.subnet.dk/

Materials for building a wing:

• 1 x (PP or EPP foam)
• 1 x Balsa wood (100x500x5) all in mm
• 1 x Wood to strengthen the wing (10x4x550) all in mm
• Narrow armed fiber tape (if available)
• Wide armed fiber tape (if available)

Materials to make the wing go by RC control.

• 2 servos (mini is preferred, but normal is perfectly OK)
• 1 motor (speed 400) Depending on the model type (not for glider (-: )
• Batteries 4 x AA for glider or 8 x B for motor driven
• Motor controller (You can buy one, or build one)
• Receiver minimum 3 channels
• 0,5 mm constantan string suspended on wood, to act as a cheese cutter, (You can get it from www.msscie.dk (Item number 89977) I gave about 80,- DKR for 100 meter)
• Different types of wide tape, (thin type)

The dimensions of the flying wing should be like this:

The profiles used to do the job have the following coordinates: profile.xls - these profile were cut out in Aluminium, and screwed into the foam, and used as a guide for cutting:

Here you can see the profiles.

And the cutter.

1. Mark the foam up like shown above. Use the profiles screwed into the side as a guide.
2. Cut the foam, a helping hand is essential for making a perfect cut. Place something heavy on top of the foam plate before cutting, you will not be able to hold the plate with the other hand!!!. The wire should not be red glowing, and not too cold, but make some test-cuts to find the right temp (current).
3. HINT. split the profiles up into equal number of sections (20 or equal.), and use these when cutting. The person cutting from the long side is the controlling person, and will set the pace by counting out loud. The person in the small end must make sure to have the wire passing over the numbers on the profile when spoken out loud by the controlling person.
4. Now the 2 wing half are cut, so they are sanded using a find sanding paper, to remove any ugly groves, and to smoothen the profile.
5. Glue the two half together by using a 2 component glue. To make sure the half's are glued together correctly, use the bottom part of the foam that was cut away. This acts as a cradle for the wing, and will assure the the wing is straight. Let the glue harden.
6. Take a soldering iron and a metal ruler. Place the ruler on the wings underside, and make a quick run of the soldering iron to make the 500 mm grove for the wooden stick that should strengthen the wing. Fill in some glue and place stick.
7. Now make the propeller cut, by making the 200 mm incision shown on the picture above. (mot a critical size - don't need to remove if used for gliding)
   
8. Now you spray some 3M spray-glue on the plane and leave it for 10 minutes. Now its ready for coloring. but first use some armored tape to make a harden nose, and go from wingtip to nose, and cross it back again, this makes the wing more stiff. 
    Find some THIN tape in different colors, and make your own patters. (remember to make different color on top and bottom !! (-: )
   
9. Cover the rudders with the same tape, and mount them on the wing by only using tape.
10. Now place receiver + battery + servos + motor controller + motor on the wing as you would like it to be placed, and find the Center Of Gravity (its placed 180 / 190 mm from nose tip) and mark it with a pen. Place your finger on the spot, and move the things around untill its balancing on your finger.
11. Make holes in the foam to hold all of the above items, and use tape to hold them down permanently.
    (Remember to make Air ventilation holes in the motor mount metal plate, if you are using this technique - shown above - otherwise you will be able to boil Eggs on your motor, and it will only last a short while ).
12. Go out and trim the plane, and you are in the air.

Here are some pictures of my recently made wings, and the "cheese cutter" that I used to make them with.

Pre-running the coals. Run motor from 1,2 Volt battery for 5 min. submerged in water.

Oh what a great sight, Wings as far as my eye can see..... (I must be short sighted!!)

This is what happens when you make an outwards loop, and your battery is not strapped on correctly, the wing becomes really difficult to fly (-:, and you have to go searching for a battery that has fallen 30 meters to the ground - I put the battery bag on an continued flying.!!! no damage done to either wing or battery. 

Email me at - kimfmx@gmail.com