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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):

65-70mm
0mm
+2mm
+5...+8mm
+12/-12mm
+9/-9mm
+15/-15mm

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.

1
2
3
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Содержание NXT

Страница 1: ...r down near the wing root Aileron deflections down up Elevator deflections down up Rudder deflections left right 65 70mm 0mm 2mm 5 8mm 12 12mm 9 9mm 15 15mm 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 ...

Страница 2: ...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 Clean the foam out completely carefully scraping it off the top skin with the spade knife You need as much depth for the servos as possible You should see the wire channels in the corners of the pockets now ...

Страница 3: ...ufficiently strong for the job but 1 5mm is stiffer stiffness helps to reduce your chances of aileron flutter Use masking tape and mark the locations of the cuts for the aileron pushrod exits and the control horns The exit slots must be located near the outside edge of the servo pockets Measure the distance on the bottom of the wings then transfer the mark to the top The control horns must be slig...

Страница 4: ...e 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 The wire ideally must exit near the outer edge of the servo pocket close to the bottom skin ...

Страница 5: ...pace 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 Trial fit the control horn in the slot Do not glue at this time Sharpen slightly the end of one pushrod wire Then make a sharp bend about 3mm from the end ...

Страница 6: ...e new holes about 4 5 5 0 mm from the axis Drill new holes in the servo arms Cut off all excess material around the holes to make two nice looking very short servo arms The objective is to hide the entire servo and its arm under the cover Important Electronically deflect both servos equally about 20 25 degrees towards the leading edge This will be the neutral point for the ailerons This will provi...

Страница 7: ...d at the mark Insert the pushrod into the servo arm Verify that the servo and control horn are square to each other otherwise the servo will be forced to angle slightly when inside the pocket Correct the pushrod if needed Insert the aft end of the pushrod through the channel carefully The 3 mm bend should fit inside the vertically elongated channel Install the control horn into the slot again temp...

Страница 8: ...Install the control horn permanently now Remove excess glue if needed Try to avoid getting glue onto the hinge line Important Keep the servo arms in their exact offset position by plugging the servos into the receiver with a battery and keep the ailerons taped to the wing roots Make balsa shims that will go on both sides of the servo and wedge the servo inside the pocket slightly Do not use excess...

Страница 9: ...4 pin section of a circuit board pin strip Mark the location of the servo wire channel and the connector on a piece of a masking tape The recommended position for the connector is near the side of the fuselage to leave the space in the middle for ballast and control lines The line shows the approximate location of the wire channels and is drawn by connecting the corners of the servo pockets where ...

Страница 10: ...a later step Solder the male connector part to the servo wires after the servo installation is done Prepare the wire harness that will go inside the fuselage Glue the wing part of the connector inside the wing either flush or slightly below the wing surface Use the mating part of the connector for keeping the pins vertically After the epoxy cures clean the excess epoxy around the base of the conne...

Страница 11: ... wing and clean any excess epoxy around the fuselage connector Now you can close the servos with the supplied servo covers Round their corners and trim edges if needed to fit within the recessed areas Use clear Scotch tape to attach the covers Mark the location of the horizontal stab mount on the tail boom About 35mm of the boom tip will be inserted into the vertical tail socket So the horizontal ...

Страница 12: ...ound the entire tail mount and press it down until the CA kicks off Doing this with the tail attached may lead to CA wicking into the screw holes and gluing the plastic screws and the tail itself permanently to the tail mount For attaching the vertical tail use either a very slow CA or 5 min epoxy You need a few seconds for positioning the vertical tail on the boom square to the horizontal tail an...

Страница 13: ...ed to remove the servos later for repair wrap them in masking tape This way the tape can be cut later and unwrapped off the servo and the servo popped out You can use an optional plywood base glued to the fuselage sidewall for protecting the fuselage in case of future servo removal This also provides a flat surface for gluing the servos Servos are glued to the plywood base with medium CA or 5 min ...

Страница 14: ...and cut a slot for the elevator control horn near the tailboom Trim the elevator control horn down to about 17 19mm from the base to the hole Make a slit on the rear side for inserting the cable Strongly recommended make a keeper lock for the control cable that will prevent it from falling off the control horn during accidental hard bumps on landings A tiny carbon rod and some cotton thread work v...

Страница 15: ...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 Insert the U spring into the holes Apply a tiny drop of CA to each hole to reinforce the foam and lock the spring in place ...

Страница 16: ...n 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 Insert the rear end of the cable into the rudder control horn make a loop and crimp the cable with a small piece of copper or steel tube Squeeze the tube with pliers to create a permanent crimp Fix the rudder in neutral position with masking tape ...

Страница 17: ...run the cable to the servo Crimp the front end of the cable to the servo arm Here you may want to use a smaller length of the servo arm middle hole since the required elevator deflection is normally smaller than the rudder deflection and a smaller servo arm is needed You may want to verify the achieved elevator deflection before crimping the cable permanently Both cables in place Optional guide tu...

Страница 18: ...your fingers are gripping the blade this may or may not be a convenient location for you If you do not want to use the recommended location for the blade and have to install it outside of the hard point you may want to use extra reinforcement patches as shown on the next picture To install the launch blade make an elongated hole at the desired location Check the shape of the hole with the actual l...

Страница 19: ... will need to use ballast Here you see a small bracket made of plywood and or carbon plate glued under the rear edge of the canopy opening This will be used for hooking up ballast skewers to it Ballast skewers of different weights are made with 1 2mm wire and small fishing weights smashed and covered with shrink wrap tubing The forward end of the skewers has a paper clip like loop for engaging int...

Страница 20: ...e the wire hook into the bracket The ballast is fixed from moving fore aft 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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