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Stream NXT - assembly instructions
Recommended settings
CG (measured from root leading edge):
Speed/launch camber (+down, near the wing root):
Cruise camber (+down, near the wing root):
Thermal camber (+down, near the wing root):
Aileron deflections (+down, -up):
Elevator deflections (+down, -up):
Rudder deflections (+left, -right):
Kit contents: wing, fuselage, tail feathers, small parts.
Small parts supplied with the kit.
Servo locations have the skin indented for covers. Your kit may have
the servo wells already made at the factory. If so, you can skip a few
steps.
65-70mm
0mm
+2mm
+5...+8mm
+12/-12mm
+9/-9mm
+15/-15mm
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Summary of Contents for Stream NXT
- Page 1 Stream NXT - assembly instructions Recommended settings 65-70mm CG (measured from root leading edge): Speed/launch camber (+down, near the wing root): +2mm Cruise camber (+down, near the wing root): +5...+8mm Thermal camber (+down, near the wing root): +12/-12mm Aileron deflections (+down, -up):...
- Page 2 Start by cutting out the skin inside the servo locations. Peel off the skin carefully. The cuts should be at least 3mm inside the outline. More if your servo is smaller and you want to reduce the size of the servo pocket. Pick out the foam inside the servo pockets carefully, first with a regular X-acto knife, then using a spade knife when near the top skin.
- Page 3 If your servos have mounting lugs, you may want to remove them, depending on how you plan to attach the servos inside the pockets. Prepare the aileron control horns by re-drilling the hole with a sharpened piece of the 1.5mm pushrod wire supplied with the kit. If desired, you can use a smaller size wire for aileron pushrods (easier to bend);...
- Page 4 When the skin is cut, pick the foam out of the slots using an X-acto knife and/or the tip of a needle file. The vertical wall must be removed completely on the aileron side and about 1/2 way down on the wing side. Use a sharpened wire to make a guide hole for the pushrod channel.
- Page 5 Use a rectangular needle file to make the pushrod channel by expanding the guide hole. The channel must be elongated vertically to provide space for the pushrod travel up+down during the aileron deflections. The needle file inside the servo pocket. You can reverse the direction and expand the channel from the pocket side also.
- Page 6 Tape the aileron ends to the wing root tabs to keep them at zero deflection. Insert the long end of the pushrod wire into the channel. Install the control horn into the slot and temporarily tape it down. Prepare the servos and servo arms. Set the servos to the neutral position.
- Page 7 Remove the pushrod wire and the control horn from the wing. Cut the wire about 3 mm past the mark. Sharpen the end of the wire slightly. It is much easier to do this BEFORE bending the end. Bend the pushrod end at the mark. Insert the pushrod into the servo arm.
- Page 8 Drop the servo into the pocket again. Insert the pushrod into the arm. Verify that the servo is sitting flat and has some space at both fore/aft walls of the pocket. Temporarily tape the servos into the pocket to prevent them falling out during the next step. Lift the control horn off the slot.
- Page 9 Apply some 5-min epoxy and microballoons mix to the corners between the servo and the pocket walls. Try to avoid getting epoxy onto the top skin, or it may warp the top skin when epoxy shrinks a little. Also, removing servos (if needed for repair) will be problematic.
- Page 10 Make a rectangular hole in the fuselage. Allow for some freedom of movement around the connector. The two connector parts must mate exactly and the fuselage part will be exactly positioned by the wing in a later step. Solder the male connector part to the servo wires (after the servo installation is done).
- Page 11 The wing connector part is done. Apply some wax to the connector pins and the area around the base of the connector. Now plug the mating connector with the wire harness onto it again. Thread the harness wires through the rectangular hole in the fuselage. Apply some thickened 5-min epoxy to the mating connector and the area inside the fuselage where the connector is near the side wall.
- Page 12 Place the assembled fuselage and wing on a table, to establish the horizontal position of the wing. Place two identical blocks on the table to help with positioning the horizontal tail parallel to the table surface. Use initially a small drop of medium CA to attach the tail mount to the boom.
- Page 13 Sight down the tail boom to verify and correct the squareness of the vertical tail before the glue sets. The easiest way to mount the fuselage servos is to glue them to the fuselage sidewall. In case you need to remove the servos later (for repair), wrap them in masking tape.
- Page 14 To eliminate interference of the control cables, either offset the servos a little or use two servo arms with upper and lower offset. Trim the servo arms to a shorter length if needed. Install the horizontal tail, mark and cut a slot for the elevator control horn near the tailboom.
- Page 15 Elevator control horn installed with CA. Rudder control horn installed similarly. No slit is necessary since the control cable will be attached permanently. Make two torsion springs for the rudder and the elevator from the supplied 0.5mm spring wire. Make two holes, one in the rudder near the control horn, one in the main part of the vertical tail, using either a micro drill bit or a sharpened piece of slightly thicker wire.
- Page 16 Repeat the same procedure on the elevator. Make slits in the tail boom for cable exits. One for the rudder cable, behind the stab mount, and one for the elevator cable on the opposite side, in front of the stab mount. Insert the rudder cable into the slit and run it all the way to the front.
- Page 17 Stretch the cable tightly to remove all slack and crimp it to the servo arm similarly. There is no adjustment possible once you crimp it, so make sure the rudder and servo are both in neutral position and the cable is taut. For the elevator cable, make the rear end loop first.
- Page 18 The rear end of the elevator cable in the working position. The rear end of the rudder cable in the working position. This sketch shows the factory recommended location of the launch blade on the wing tip. On the left wing tip there is a hard point made of epoxy and microballoons located as shown on the sketch.
- Page 19 Glue the optional reinforcement patches either with CA or epoxy. Re-open the holes if needed. Insert the blade and glue it with medium CA or (better) bonding epoxy glue. If you plan to fly in very windy conditions in competition, you will need to use ballast.
- Page 20 It will rattle inside the fuselage slightly during flights, but that is OK. Assembly finished. Install your receiver and battery in the nose. Use some nose weight if needed to achieve the desired CG (65-70mm range is recommended). Program your radio and enjoy flying your Stream NXT.
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