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LONG SHOT 3
Building instructions
Dear customer,
You have just became owner of our RC hand launch glider (Discus Launch Glider, DLG) Long Shot 3. It is the new
version of our very successful Long Shot 2. Thank you for your decision.
The model is designed to be launched by the “discus launch” method. The flyer holds the model at the peg located
in the wingtip, between forefinger and middle finger, rotates 360 deg and releases the model. The model will climb
much higher than by the classical “javelin” style launch. Another important advantage is that the joints of your arm
will not suffer pain and injuries are almost unknown
The basic feature of the DLG of this type is the rear position of the centre of the model side area. It is achieved
with the large area of fin and rudder and low wing dihedral. This is the most important feature of the design, so do
not change these elements.
The wing is equipped with a series of airfoils AG 45xx ct designed by Mark Drela. It has very low drag, allowing a
high climb during the launch and rapid cruising while hunting thermals.
The structure makes use of the excellent properties of modern materials. The result is light and very rigid
construction. The weight of the model ready to fly can be as low as about 280 grams. The fuselage is of pod and
boom design. The pod is carbon or carbon/Kevlar shell, carbon reinforced. The boom is made of carbon/glass
composite tapered tube, which is very strong yet light.
Assembly
You will need:
RC transmitter, at least 4 channels, processor controlled and lightweight unit recommended.
Micro receiver, at least 4channels.
Note: the exact minimum numbers of Tx and Rx channels can depend on the type of equipment used. Number of
transmitters need 5 channels receiver to control 2 aileron servos in wing.
4 micro servos (6 to 9 grams). We recommend digital servos for the ailerons.
Power supply: 4 NiMh cells 250 mAh or similar, the weight should be about 30 grams.
CA glue, good Epoxy.
Basic modeling tools.
Fuselage
The fuselage is heavily loaded by centrifugal forces during the launch and must be firm and rigid.
Make up (drill and file out) the aileron servo cable access hole in the wing saddle, with the centre about 30 mm
behind the wing leading edge. This hole serves also as the aileron servo cables exit.
The hole must be oval and
as small as possible
, about 12 mm wide and 18 mm long. A large rectangular hole would weaken substantially
the pod in this area.
Cut the tube to length, shown on the drawing.
We always try for perfect fit, but if the tube has some play
on the pod, you can cut a piece off the front end of tube first, cut the tube to length from the opposite
(thinner) side then.
WARNING: DO NOT GLUE THE BOOM TO THE POD IN THIS STAGE YET!
