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SIG KADET LT-40, Инструкция по эксплуатации


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8.

Pin the pre-shaped balsa Trailing Edge in place on the plan, gluing it to the back edge of WS-B3 at the same time. Be sure 
to align all of the notches in the Trailing Edge with the wing rib locations on the plan.

 

NOTE: It is possible for plan paper to shrink or expand slightly with humidity 
changes. If it has, this is where you will notice it! You may find that the rib 
notches in the Trailing Edge do not exactly match the rib locations on the plan. 
Nonetheless, they should be very close, not off by more than the thickness of a 
rib. A slight difference is nothing to worry about! The machine-cut notches in the 
Trailing Edge are correct, and you should build your wing according to them. To 
install a wing rib in the steps coming up, simply put the rear end of the rib in the 
notch, and then align the rest of the rib parallel with the rib lines on the plan. Do 
not alter the notches in the Trailing Edge!

 

 
9.

 
Carefully remove all the wing ribs (W1 through W5) from die-cut sheets #1, #2, 
and #3. Take time to familiarize yourself with the ribs and how they differ. You will 
notice that ribs W1, W2, W3, and the front of rib W4 are smaller than the W5 ribs 
to all allow for the 3/32" thick balsa wing sheeting pieces. There are also some 
differences between the size of the spar cutouts in each rib.

 

 
10.

 
Glue wing ribs W2 and W3 in place. They should be glued to the Bottom Main 
Spar, the Bottom Rear Spar, the WS-B2 and WS-B3 wing sheeting, and the 
Trailing Edge. Make sure the ribs are sitting up straight, perpendicular to the 
building board before the glue dries.

 
11.

 
Glue one SW-2 Shear Web in place on top of the Bottom Main Spar, and up tight against rib W3.

 
12.

 
Glue one SW-3 Shear Web in place on top of the Bottom Rear Spar, and up tight against rib W3.

 
13.

 
Glue rib W4 in place, gluing it to the Bottom Main Spar, the Bottom Rear Spar, the Trailing Edge, and to the ends of Shear 
Webs SW-2 and SW-3.

 
14.

 
Glue another SW-2 Shear Web to the Bottom Main Spar and another SW-3 Shear Web to the Bottom Rear Spar, also 
gluing them against rib W4.
 

 

 

 
15.

 
Next glue the first W5 rib in place, followed by a SW-1 Shear Web on the Bottom Main Spar and a SW-3 Shear Web on the 
Bottom Rear Spar. Continue this procedure of gluing in a rib, followed by the adjoining Shear Webs, until all the remaining 
W5 ribs and Shear Webs are glued in place. 
 
NOTE: There are no SW-1 Shear Webs called for in the last two rib bays nearest the wing tip, nor any SW-3 Shear Webs in 
the last three rib bays nearest the wing tip.

 
16.

 
Now trial fit the other Main Wing Spar assembly (that you made back in step 2) in place in the top front notches in the wing 
ribs. This is now referred to as the Top Main Spar. Make sure that the end of the balsa Spar Doubler lines up flush with the 
side of the first W5 wing rib. When satisfied with the fit, glue the Top Main Spar assembly permanently to all the wing ribs.

 
17.

 
Locate a 1/4"x3/8"x36" balsa stick for the Top Rear Spar and glue it in place in the top rear notches in the wing ribs. 
NOTE: The tip end of the Top Rear Spar is also extra long. Do not cut it off at this time - we will do that later, after the wing 
tip is installed.

Содержание KADET LT-40

Страница 1: ...was designed to it must be carefully assembled A model airplane that is not built properly will not fly properly Remember to work slowly and follow the instructions exactly SIG as the kit manufacturer can provide you with a proven aerodynamic design quality materials and detailed instructions but ultimately the flyability of your finished model depends on how well YOU put it all together Customer ...

Страница 2: ...en to be defective or missing The user shall determine the suitability of the product for his or her intended use and shall assume all risk and liability in connection therewith COMPLETE KIT PARTS LIST Die Cut Balsa Wood Sheets 2 Sheet No 1 wing ribs W1 W2 2 Sheet No 2 wing ribs W3 W4 8 Sheet No 3 wing ribs W5 2 Sheet No 4 wing sheeting WS T1 WS B1 1 Sheet No 5 wing sheeting WS T2 WS B2 1 Sheet No...

Страница 3: ...SE WHEEL 1 LEFT DECAL SHEET DKM 267A 1 RIGHT DECAL SHEET DKM 267B Documenation 1 PLAN SHEET 1 1 PLAN SHEET 2 1 INSTRUCTION BOOK 1 TIPS ON USING SIG CA 1 THE BASICS OF RADIO CONTROL Wood Parts Identification Wood parts such as standard stick and sheet stock leading edges trailing edges ailerons elevator etc are all easily identifiable by comparing their shape and dimensions to the plans and the KAD...

Страница 4: ... discolored parts F2 F3 F6 MADB and Stab L E Joiner can be installed as is without any need to try to clean the edges However we recommend that the black edges of former F1 made of 1 4 thick plywood be lightly sanded with an 80 grit sanding block to remove the loose black soot It s not necessary to sand every bit of black off you don t want to change the size of the part Sand until you can run you...

Страница 5: ... sizes available and selecting the best one to use on your KADET LT 40 will depend mostly on which engine you end up buying Refer to the instruction sheet that comes with your engine for a recommended propeller size If the engine manufacturer lists several possible sizes pick the one that sounds like it is for a slower flying model choose sport or scale instead of pattern or racing Also be sure to...

Страница 6: ...rts dry without glue then check and adjust the alignment and finally apply CA to the pre assembled joints This makes it very easy to build a straight and true fuselage in a very short time If the use of CA glues is new to you please read TIPS ON USING SIG CA included in this kit NOTE The instructions in this book are written assuming the use of MEDIUM CA glue for all steps unless otherwise noted I...

Страница 7: ...short straight cuts in wood and covering material Assorted Screwdrivers Assorted Hex Allen Wrenches Regular Pliers Drill and 1 16 3 32 1 8 5 32 5 16 Drill Bits Needle Nose Pliers with cutting jaws Flat File For cutting bending and shaping pushrod wires For removing burrs and sharp edges from wire parts Soldering Iron Rosin Core Solder and Soldering Paste Flux There is one part in this kit that nee...

Страница 8: ...arts to each other They will also be used as a building pattern for the Wing Panels Stabilizer and Fin which will be assembled directly on top of the plans The plans also show how we would install a typical radio and engine in the KADET LT 40 By referring to the examples shown on the plan you should be able to properly install your radio and engine even if they are not exactly the same as what is ...

Страница 9: ...d two 1 4 x1 2 x10 1 8 balsa pieces for the Spar Doublers see the wing cross section drawings on Plan Sheet 2 to understand the location of the Spar Doublers Use Slow CA to glue a Spar Doubler onto one end of each Main Wing Spar making sure that the sides of the pieces are flush with each other before the glue dries 3 Pin one of the Main Wing Spar assemblies from the previous step in position on t...

Страница 10: ...e the ribs are sitting up straight perpendicular to the building board before the glue dries 11 Glue one SW 2 Shear Web in place on top of the Bottom Main Spar and up tight against rib W3 12 Glue one SW 3 Shear Web in place on top of the Bottom Rear Spar and up tight against rib W3 13 Glue rib W4 in place gluing it to the Bottom Main Spar the Bottom Rear Spar the Trailing Edge and to the ends of S...

Страница 11: ...panel Notice that W1 should not be installed straight up and down like all the rest of the wing ribs but rather it must have its top tilted slightly towards the wing tip to provide the finished wing with the proper amount of dihedral angle see Wing Front View on Plan Sheet 2 Before you glue W1 to any of the wing structure eyeball it from several different angles to verify that it is in the correct...

Страница 12: ...Main Spar and the Leading Edge NOTE There will be a wedge shaped gap where WS B1meets the Leading Edge This is normal Simply run a bead of Slow CA in the gap and let it dry this will secure WS B1 to the Leading Edge Fill the rest of the gap with light weight wood filler before covering 28 Carefully saw off and then block sand the root ends of the Spars Leading Edge and Trailing Edge flush with the...

Страница 13: ...gned with each other so that there is no twist between the panels Look for gaps between the W1 root ribs If you installed both W1 ribs at the correct angle and you sanded all the spars etc perfectly flush with the W1 ribs then you should not have any significant gaps A small gap of 1 16 or less is insignificant and will be OK If you have a larger gap you will have to figure out how it happened and...

Страница 14: ...ing panels shifting The glued MADBs and the pins should hold everything together adequately for the next step 36 Pick up the wing assembly turn it over and put a strip of masking tape along the entire center joint on the bottom of the wing Now turn it back over and flow Thin CA glue into the center joint from the top Run the glue in along the entire length of the W1 ribs Use just enough glue to fl...

Страница 15: ... the airplane when the ailerons are in neutral position That rearward lean provides the KADET LT 40 with a small amount of differential movement in the ailerons more up than down which makes for smoother turning 48 Use a small amount of Slow CA to glue the Brass Bearing portion of the Left Aileron Torque Rod into the groove in the front of the Left Center Section Trailing Edge piece GLUE ONLY THE ...

Страница 16: ...the Sig Easy Hinges 4 per aileron on the leading edge of the ailerons and on the trailing edge of the wing 56 Cut slots for the hinges in the Ailerons and Wing following the instructions INSTALLING SIG EASY HINGES at the end of this wing construction section perform steps 1 and 2 57 Once all the slots have been cut insert a single Easy Hinge halfway into each slot in the trailing edge of the wing ...

Страница 17: ...uld already be level with the surface of the spars etc However you may need to use a small sanding block to touch up any excess glue on the rib to spar joints the rib to leading edge joints and the rib to trailing edge joints Excessive sanding of the ribs themselves may distort the airfoil shape 64 Make an opening 1 wide x2 long in the bottom wing sheeting for the aileron servo Mark and cut out th...

Страница 18: ...l 18 long piece to the bottom front of the wing Cut it off right in front of the plywood ASM part 72 Using the same techniques glue the 6 long piece of fiberglass tape to the bottom of the wing It goes from the back of plywood part ASM all the way off the end of the wing When dry cut it off flush with the end of the wing NOTE Be very careful when gluing the tape in the area of the Torque Rods If y...

Страница 19: ...er hinge gap Keep in mind that for best control response the gap should be kept as small as possible but big enough to allow full movement of the control surface If everything appears to function properly remove the parts and take the hinges out of the slots Set everything aside until after the model has been covered THE MODEL PARTS SHOULD BE COMPLETELY COVERED BEFORE PROCEEDING TO THE NEXT STEP 6...

Страница 20: ...ter 78 Draw a vertical center line on the front of F1 exactly equal distance from each side Then set your engine on the front of F1 as shown in the photo with the crankshaft of the engine directly in line with the vertical center line Finally make two pencil marks on F1 one on each side of the engine s crankcase to indicate where the inside of the two Engine Mounts should be 79 Draw a vertical lin...

Страница 21: ...t 85 Mount the engine to the Engine Mounts with the four 4 40 x1 Mounting Bolts and the four 4 40 Aircraft Lock Nuts provided Unbolt the Engine Mounts from former F1 leaving the engine bolted to the Mounts Set the engine engine mount combination aside until needed later 86 Cover your building board with wax paper and pin both of the die cut plywood FS R fuselage side rear pieces down on top of it ...

Страница 22: ...a 5 16 dia drill bit Be sure to use a hardwood 2x4 or similar backing block while drilling to avoid splintering the edges of the holes In the following steps 90 through 97 the fuselage parts will be assembled with rubber bands and tape Do not glue any parts until told to do so in step 98 90 Stack the Left and Right Fuselage Sides on top of each other with the doublers touching Align all the edges ...

Страница 23: ...age on its side on the building board and press down firmly on the fuselage side directly above former F2 This should cause the former and the fuselage sides to lock tightly together in square alignment Be sure you are pushing straight down not off to one side which would cause a twist in the structure If everything looks good run a bead of Medium CA along the side of F2 to glue it permanently to ...

Страница 24: ... glue every joint in the fuselage with Medium CA Use enough glue to fill up the joint plus leave a visible but small reinforcing fillet in every joint Take your time and don t miss any joints Each and every one of them contributes to the finished strength of the fuselage Work on small sections at a time to avoid having excess glue running all over the place Let dry thoroughly 109 Carefully block s...

Страница 25: ...hrod tube should go through the right hole in F3 and through the hole in the middle of F6 The rudder pushrod tube should go through the left hole in F3 and through the slot in FT R just in front of F6 115 Notice that the servo end of both pushrod tubes should stick forward about 4 3 4 in front of former F3 When you ve got the tubes properly positioned glue them permanently to former F3 with Slow C...

Страница 26: ...parts of the Fin From both sticks cut the eight 5 16 Sq Balsa diagonal ribs required for the Stabilizer Be sure to save all the leftover wood for building the Fin later in step 137 Work on one rib at a time Cut the rib to exact size over the plan angling the ends to fit well against the leading and trailing edges Glue and pin the first rib in place before going on to the next one 126 Once the glue...

Страница 27: ...n angling the ends to fit well against the adjoining pieces Glue and pin the pieces in place 138 Cut two pieces of 5 16 x 1 2 balsa for the bottom of the Fin Glue and pin them in place 139 Once the glue is dry unpin the Fin from the plan and re glue all the joints with additional Medium CA Use just enough glue to completely fill the joint plus leave a visible but small fillet of glue between the p...

Страница 28: ...on look or something totally wild in vivid neon colors Your imagination is the only limit If this is your first model our advice is to keep the color scheme simple and visible The most economical way to go is to choose one primary color for the entire model see COVERING CUTTING DIAGRAM Choose a light color Covering the entire model in black dark blue gray etc is not a good choice In the air a dark...

Страница 29: ...on on covering material will overlap the painted areas at least 1 8 when it is applied Also paint the edges of the hatch area and partway inside the tank compartment with fuel proof paint Paint the area of the fuselage where the wing will sit with fuel proof paint Paint the bottom of the grooved landing gear block with fuel proof paint Covering Cutting Diagram The diagrams below suggest how to cut...

Страница 30: ...arts that you don t score or cut into the wood Scoring a critical structural component of the airplane could seriously weaken its strength and possibly cause an in flight failure Cover the left side of the Rudder with a separate piece of covering material Run the left side covering completely around the leading and trailing edges far enough so that there will be at least 1 8 overlap with the right...

Страница 31: ...at least 1 8 Cover The Stabilizer Covering the Stabilizer is virtually the same as covering the Fin First cover the ends of the Stabilizer with small pieces of scrap covering material Then cover the top and bottom of the Stabilizer with separate pieces of covering material Adhere the top and bottom covering pieces around the edges first then shrink the middle tight Overlap all seams at least 1 8 C...

Страница 32: ... edges Continue wrapping and sealing the covering around the edges and onto the Hatch bottom Make slits in the covering to make it easier to work around the curved end of the Hatch and around the Hatch Tongue Use patience and do the best you can to get the entire Hatch top bottom and edges covered What you can t get covered with iron on covering you should paint with fuel proof paint Cover The Win...

Страница 33: ... surface of the model where the decal will be placed with water mixed with a small amount of dish soap you can also use Sig Pure Magic Model Airplane Cleaner Fantastic Windex or 409 type cleaners Peel the paper backing sheet completely off the decal being careful not to let the sticky side double over and adhere to itself Place the decal onto the wet surface of the model The soapy water solution w...

Страница 34: ...od and the wing trailing edge Apply a coat of Slow CA glue in the hole and slot in the aileron leading edge Quickly slide the aileron back into position against the back of the wing Remove the wax paper and wipe off any excess glue that oozes out of the slot with a rag If any glue remains between the front of the torque rod and the wing trailing edge slide a piece of paper through there to mop up ...

Страница 35: ...int with a rag Hold tight until the glue dries 158 Draw a center line on top of the stab running from the center mark above former F6 step 153 to a point above the center of the rear end of the fuselage NOTE In the photo you ll see that we have temporarily stuck a T Pin through the hinge gap to give us a visual alignment with the middle of the end of the fuselage Use a straight edge to draw the li...

Страница 36: ...have gone completely through the L G Anchor Block also NOTE Even though the plan calls out a LEFT and RIGHT Main Gear Wire it actually makes no difference which wire sits in the front or back of the groove they are interchangeable at this point The Left Main Gear Wire could go to the back of the groove and the Right Main Gear Wire to the front or vice versa it doesn t matter the gear will function...

Страница 37: ... the back plate Choose the correct diameter adapter ring to fit your engine s crankshaft and press the ring into the hole in the middle of the back plate Insert the socket head bolts into the holes in the nose cone 175 Mount the Propeller and Spinner onto the engine in the order shown First slip the back plate onto the engine crankshaft then the propeller then the prop washer and finally the prop ...

Страница 38: ... wire matching the angle on the plan at the rudder servo 182 Locate one piece of Small Dia Nylon Pushrod Tubing 1 8 O D x12 long Use a sharp modeling knife to cut the piece to 11 1 4 long 183 Slide the music wire inside the nylon pushrod tubing Then insert the pushrod assembly into the fuselage from the rudder servo area through the nose section of the model under the tank floor and out the hole i...

Страница 39: ... Tubing 1 8 O D x 12 long Use a sharp modeling knife to cut the piece to 9 1 4 long 189 Slide the music wire inside the nylon pushrod tubing Then insert the straight end of the pushrod assembly into the fuselage from the front through the hole in F1 through the nose section of the model through the hole in F2 and finally into the hole in the throttle servo pushrod connector Insert the angled end o...

Страница 40: ... directions shown to get more or less travel Rudder Control 192 Locate the Small Nylon Control Horn 4 holes and two 2 x1 2 Sheet Metal Screws for the Rudder Cut the Control Horn and the Retainer Plate apart Hold the Control Horn in exact position see plan on the left side of the rudder and mark the location of the mounting holes Drill pilot holes through the rudder with a 1 16 dia drill bit turn t...

Страница 41: ...l length Slide the plain end of the steel rod inside a piece of Small Dia Nylon Pushrod Tubing 1 8 O D x38 long and screw a minimum of 1 8 of threads inside the tubing Screw a Nylon R C Link halfway onto the exposed threads of the steel rod 202 Slide the elevator pushrod from the elevator end inside the larger nylon pushrod tube that is already in the fuselage Slide it in until the nylon R C link ...

Страница 42: ...nt hole in the servo arm You can also screw the Aileron Connectors up or down on the Torque Rods to increase or decrease the amount of travel Why Solder Links You may be wondering why we provided R C Solder Links for the servo ends of the aileron pushrods when all the rest of the control system installation is solderless Why didn t we use more Pushrod Connectors or maybe just a Z bend in the wire ...

Страница 43: ... its correct receiver terminal and that it is responding properly NOTE Since the receiver will be hard to get at you should use a short extension wire available from the radio manufacturer for the ailerons Plug the extension wire into the receiver s aileron terminal Whenever you take the wing on off the model you can connect disconnect the ailerons at the plug in between the extension wire and the...

Страница 44: ...of the vent tube Using the drill bit for leverage slowly bend the back end of the vent tube upwards about 45º or until the end of the tube is even with the top of the stopper cap 224 Cut the piece of fuel line tubing that came with the tank to 3 1 4 long Slide one end of the tubing onto the brass clunk weight Slide the other end of the tubing over the back end of the fuel feed tube 225 Insert comp...

Страница 45: ...m the carburetor and the muffler pressure fitting Pump the fuel into the tank through the fuel feed line carb line When the tank is full fuel will begin to run out the vent line muffler line Stop pumping when you see the fuel start to come out the vent line Reconnect the fuel lines and you are ready to start the engine BALANCE YOUR AIRPLANE We know that your KADET LT 40 looks done and you re real ...

Страница 46: ...makes a good balancing tool You might try switching places between the battery and receiver or move the battery right in front of the servos or in extreme situations move it behind the servos If you can t get your model balanced simply by re locating the battery pack then you will have to purchase lead weights from your hobby dealer and glue them into the tail end of the fuselage 237 If the airpla...

Страница 47: ...URFACE TRAVEL RUDDER 1 LEFT 1 RIGHT AILERONS 3 8 UP 3 8 DOWN THROTTLE Tx Stick Trim Lever Carb Result Forward Forward Fully Open High Speed Back Forward Slightly Open Good Idle Back Back Fully Closed Kill Engine Make sure none of the pushrods are binding or the servos stalling Make sure all of the screws and bolts on your model are tight Double check to see that all of the servos are secure and al...

Страница 48: ... of control on your first flight quickly hand the transmitter back to your instructor so he can rescue the airplane He will get it leveled off and then let you try it again Without an instructor you would not get a second chance In addition to not over controlling another problems beginners need to overcome is the left right control reversal that happens when a model is flying towards you one minu...

Страница 49: ... ...

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