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SIG KADET LT-25, Инструкция, Страница: 2 / 34

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Warning! This Is Not A Toy!

 
Flying machines of any form, either model-size or full-size, are not toys! Because of the speeds that airplanes must achieve in 
order to fly, they are capable of causing serious bodily harm and property damage if they crash. IT IS YOUR RESPONSIBILITY 
AND YOURS ALONE to assemble this model airplane correctly according to the plans and instructions, to ground test the 
finished model before each flight to make sure it is completely airworthy, and to always fly your model in a safe location and in a 
safe manner. The first test flights should be made only with the assistance of an experienced R/C flyer.
 
The governing body for radio-control model airplanes in the United States is the ACADEMY OF MODEL AERONAUTICS, 
sometimes referred to as the AMA. The AMA SAFETY CODE provides guidelines for the safe operation of R/C model airplanes. 
While AMA membership is not mandatory, it is a good idea and we encourage all new R/C fliers to join the AMA. Membership in 
the AMA provides you with important liability insurance protection in case your R/C model should ever cause serious property 
damage or personal injury to someone else. For more information, contact:

 

ACADEMY OF MODEL AERONAUTICS

 

5161 East Memorial Drive - Muncie, IN 47302 - Telephone: (765) 287-1256

 

COMPLETE KIT PARTS LIST

Laser-Cut Balsa

1 3/32"x3"x12" Sht #1 - W-1 Wing Ribs 1 3/32"x3"x12" Sht #2 - W-2 Wing Ribs 1 3/32"x3"x12" Sht #3 - W-3 

Wing Ribs

1 3/32"x3"x12" Sht #4 - W-4 

Wing Ribs

5 3/32"x3"x12" Sht #5 - W-5 Wing Ribs 1 1/8"x4"x18" Sht #6 - Fuselage Bottom 

Front,Nose Bottom, Stab Mount

1 1/8"x4"x36" Sht #7 - 

Fuselage Bottom Rear

1 1/8"x4"x24" Sht #8 - 

Formers, Tank Floor

1 1/8"x4"x18" Sht #9 - Fuselage Top 

Rear

2 1/8"x6"x30" Sht #10 - Fuselage 

Doublers

2 1/8"x6"x48" Sht #11 - 

Fuselage Side

1 5/16"x4"x36" Sh t#12 - 

Stabilizer, Fin

1 1/8"x6"x24" Sht #13 - Wing Tip, 

Windshield

1 3/32"x3"x24" Sht #14 - Main Spar 

Web

1 3/32"x2"x30" Sht #15 - 

Rear Spar Web

1 3/32"x3"x36" Sht #16 - 

Diagonal Wing Braces

Balsa Sheet

1 3/32"x4"x24" Wing Center Sheet

3 3/32"x3"x24" Wing Leading & Trailing 

Edge Sheet

Balsa Sticks

4 3/16"x1/4"x36" Rear Wing Spars

8 1/8"x3/16"x24" Forward Wing Spars

1 1/2" Triangle x12" Brace for 

Firewall & Landing Gear 
Mount

1 5/16"x5/16"x30" Brace for 

Stabilizer & Fin

4 3/16"x3/8"x36" Main Wing Spars

Pre-Shaped Special Cut Balsa

2 36" Long Leading Edges

2 30" Long Trailing Edges

2 1/2"x1-1/2"x30" Ailerons

2 1/2"x1-1/2"x3-5/16" 

Center Section Trailing 
Edges

1 5/16"x2"x24" Elevator

1 5/16"x8-3/16" Rudder

Laser-Cut Lite-Plywood

1 1/8"x6"x8" Sht #17 - Hatch,Hatch 

Tongue,Dihedral Gauge, Tailwheel 
Mount, & F-2D

Laser-Cut Birch Plywood

1 3/16"x4"x6" Sht #18 - Firewall, 

Landing Gear Mount

1 1/8"x5-1/2"x9-1/2" Sht #19 - Servo 

Trays, Dihedral Brace, Tiller Bar & 
Tiller Bar Mount

Hardwood

2 1/4"x4-3/4" Wing Dowels

Wire Parts

1 Right Aileron Torque Rod

1 Left Aileron Torque Rod

7 2-56 x10" Threaded Steel 

Rods (for pushrods)

1 1/16" dia. Pre-Bent 

Tailwheel Wire

Hardware

2 4-40 x1/2" Mounting Bolts (for 

Landing Gear)

5 4-40 x3/4" Mounting Bolts (Tiller Bar, 

Engine to Eng.Mounts)

4 6-32 x3/4" Mounting Bolts 

(for Eng.Mounts to Firewall)

2 6-32 x1-1/2" Mounting 

Bolts (for Axles)

4 6-32 Hex Nuts (for Axles)

5 4-40 Aircraft Lock Nuts (Tiller Bar, 

Engine to Eng.Mounts)

2 6-32 Aircraft Lock Nuts (for 

Axles)

2 4-40 Blind Nuts (for Main 

Gear)

4 6-32 Blind Nuts (for Eng.Mounts to 

Firewall)

4 #2 Flat Washers (for Tailwheel)

2 #4 Flat Washers (for Tiller 

Bar)

3 3/16 ID. Nylon Washers 

(for Tiller Bar)

1 #4 Nylon Bushing (for Tiller Bar)

4 #2 x3/8" Sheet Metal Screws (Hatch 

Cover, Tailwheel Bracket)

4 #2 x3/4" Sheet Metal 

Screws (for Elev,Rud Horns)

1 small Nylon Control Horn 

(for Rudder)

1 medium Nylon Control Horn (for 

Elevator)

2 4-40 Nylon Aileron Connectors

4 2-56 Solder Clevis (servo 

end Ail,Elev,Rud Pushrods)

4 2-56 Nylon R/C Links 

(Ail,Elev,Rud Pushrods)

Содержание KADET LT-25

Страница 1: ...ly 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 Service SIG Mfg Co Inc is totally ...

Страница 2: ... Stabilizer Fin 1 1 8 x6 x24 Sht 13 Wing Tip Windshield 1 3 32 x3 x24 Sht 14 Main Spar Web 1 3 32 x2 x30 Sht 15 Rear Spar Web 1 3 32 x3 x36 Sht 16 Diagonal Wing Braces Balsa Sheet 1 3 32 x4 x24 Wing Center Sheet 3 3 32 x3 x24 Wing Leading Trailing Edge Sheet Balsa Sticks 4 3 16 x1 4 x36 Rear Wing Spars 8 1 8 x3 16 x24 Forward Wing Spars 1 1 2 Triangle x12 Brace for Firewall Landing Gear Mount 1 5 ...

Страница 3: ... Tubes Pull Pull Cables 1 027x6 Steel Cable Pull Pull Cable 16 SIG Easy Hinges 1 10 x27 Decal Sheet Documentation 1 38 x50 Plate 1 Full Size Plan 1 38 x50 Plate 2 Full Size Plan 1 Instruction Book 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 p...

Страница 4: ...will serve Mineral stains and tiny knots do not seriously affect balsa wood strength Also there is a natural tendency for some balsa sticks and sheets to immediately bow upon being cut off from a perfectly square block due to internal stresses in the wood In most cases bows in wood parts such as leading edges readily straighten out as they are glued into a structural unit If you are in doubt about...

Страница 5: ...t make sure whatever you use is light weight and sands easily Do not use household patching plaster it s way too heavy Glue There are so many different types of glue available today for model airplane construction that it can be confusing to even the experienced modeler To simplify matters most model airplane glues an be classified as one of four basic types 1 Cyanoacrylate Adhesives such as SIG C...

Страница 6: ...l materials were obtained from the local lumber yard Insulation board or cork sheet would make a good substitute for the foam board if that is not available Wax Paper Used to cover the plans so that parts are not accidentally glued to them A Few Dozen T Pins such as SIG SH 310 For holding parts together during construction Masking Tape or Scotch Tape For holding parts together during construction ...

Страница 7: ... assembly Check off boxes are provided so you can keep track of which steps you have completed How To Use The Plans There are two sheets of Plans included in this kit The plans will be used in several ways They will help you identify all the parts and determine the relationship of all the parts to each other They will also be used as a building pattern for the Wing Panels Stabilizer and Fin which ...

Страница 8: ...om the 3 32 x4 x24 balsa Sheet to fit between the main and rear spars Place on the plan gluing and pining its front edge to the back of the Bottom Main Spar at the same time 5 Locate the 3 16 x1 4 x36 balsa stick for use as the Bottom Rear Spar and pin it in place on the plan gluing it to the rear edge of the balsa sheet at the same time Cut off the excess at the root rib W 1 6 Cut a piece of wing...

Страница 9: ...it is not symmetrical Hold the Leading Edge against one of the wing cross section drawing on Plan sheet 2 and after you are sure that you have it matched up correctly mark an up arrow on one end Now make sure you glue it into the wing right side up 13 With a X Acto saw finish cutting the notch in the W 1 and W 2 wing ribs using the laser cut notches as a guide This will leave a space for the dihed...

Страница 10: ... that the wing tip comes in contact with another part there are angles involved This means there will be some unavoidable small gaps between the parts For instance underneath both of the Top Spars there will be a gap Also around the backside of the Leading Edge there will be some gaps All of these gaps can be filled with glue and light weight wood filler 18 Cut the Leading Edge Trailing Edge Top M...

Страница 11: ...ation of up to 1 4 either way is acceptable and will not affect flight performance The most important point to have a tight joint at the wing center with no gaps 23 Use epoxy either SIG 5 MINUTE or SLOW CURE to join the two wing panels Apply glue generously to the end ribs and the dihedral brace Work some glue into the slot in each wing root Carefully slide the wing halves into place and hold in p...

Страница 12: ...e Left Center Section Trailing Edge piece Keep the glue on the balsa do not get any glue on the Torque Rod or the Brass Bearing Hold the Center Section Trailing Edge assembly in position on the trailing edge of the wing Use a straight edge to confirm that the bottom surface of the part is flush with the bottom surface of the wing Let dry Repeat this step for the Right Center Section Trailing Edge ...

Страница 13: ...s tape over the center joint on top of the wing Using a small amount of Thin CA tack glue the end of the tape to the Trailing Edge Make sure the width of the tape is overlapping 1 2 onto the Right Wing Panel and 1 2 onto the Left Wing Panel After the Thin CA dries pull the other end of the tape completely around the Leading Edge and down onto the bottom surface of the wing The tape should lay nice...

Страница 14: ...irewall and then drill the holes with a 11 64 drill bit 44 Bolt the Engine Mounts loosely to the Firewall with four 6 32 x3 4 Mounting Bolts and 6 32 Blind Nuts Double check the position of the Mounts one more time and then tighten the Bolts until the prongs of the Blind Nuts are just started into the wood and holding firmly Now loosen the Bolts and remove the Engine Mounts from the firewall Seat ...

Страница 15: ...of the Blind Nuts 48 Glue laser cut lite ply former F 2D in place at the top of lasercut balsa former F 2 Be careful to get the top and side edges of the formers flush with each other 49 Glue the laser cut lite ply Tailwheel Mount onto the aft end of the balsa wood Fuselage Bottom Rear Make sure the small hole in both parts line up with each other 50 Glue a laser cut balsa Fuselage Doubler in plac...

Страница 16: ...ear is on the right side of the fuselage Double check to see that the entire fuselage structure is in correct alignment Make sure that the entire structure is straight and square and that all the parts are taped tightly together before proceeding 57 Now you can start gluing the fuselage parts together Use MEDIUM CA glue and start with small patches of glue in the corners checking the fuselage alig...

Страница 17: ...ace on the fuselage Using the hole in the Hatch as a guide drill a 1 16 dia pilot hole in the top edge of the firewall Screw the Hatch down with a 2 x 3 8 Sheet Metal Screw and 2 Flat Washer 67 Two pieces of 3 16 o d x36 Large Nylon Pushrod Tubing are provided for making the outer casing of the Elevator and Rudder Pushrods Cut one piece for the elevator pushrod to an overall length of 26 1 2 The p...

Страница 18: ...mplete Set the fuselage aside until covering Stabilizer And Elevator 72 Tape the Stabilizer Plan to the building board and cover with wax paper Pin down over the plan and glue in place all of the 5 16 laser cut balsa stabilizer parts S 1 S 2 S 3 S 4 S 5 and S 6 Cut four 5 16 sq balsa ribs from the 30 long piece provided and glue them in place with THIN CA 73 Once the glue is dry remove the Stabili...

Страница 19: ...all the glue joints CAUTION Do not sand so much that you thin down the Fin more than 1 32 under its original 5 16 thickness 80 Mark a center line on the front of the Fin Leading Edge Using the center line as a guide carve and sand the Leading Edge round NOTE Leave the trailing edge top end and bottom of the Fin flat and square 81 Locate the pre shaped balsa Rudder Compare the overall height of the...

Страница 20: ... your model to suit your own taste There are a huge variety of after market items available in the hobby shops to dress up your airplane Striping tapes and trim sheets in every color of the rainbow stick on decals and markings are all available and easy to apply You can go for a military look a Cessna like civil aviation look or something totally wild in vivid neon colors Your imagination is the o...

Страница 21: ...d bottom ends of the Rudder Cover the right side of the Rudder in the same manner you did the left side making sure that it overlaps all other pieces of the covering material at least 1 8 No areas of wood should be exposed Cover The Fin Cover the top end of the Fin with a small piece of scrap covering material before covering the sides Run the top covering aroung the corners about 1 8 onto the sid...

Страница 22: ...ddle area Do not apply any covering on the Stab Mount where the Stabilizer will be glued on When you ve finished cut the holes in the fuselage sides for the wing dowels Cover the windshield with a single piece of covering Run the sides of the covering down over the corners 1 8 onto the sides of the fuselage Tuck and iron the front and rear edges of the covering around the ends of the windshield Co...

Страница 23: ... you make these additional cuts concentrate on staying in the slit and keeping the headed straight into the center of the wood so that it won t come out the side of the part You will find that as the blade gets deeper into the wood it will become harder to move it along the slot Try wiggling the knife handle in the slot to make it cut instead of trying to slice the blade along in one continuous mo...

Страница 24: ...e front of the torque rod slot and the wing trailing edge Apply glue then 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 trailing edge slide a piece of paper through there to mop up the excess Let dry Decals 82 The follow...

Страница 25: ... same Now push another T Pin through the stab into the fuselage to secure it in position 87 Lift the rear of the fuselage up without jarring the stab loose to enable you to mark the location of both fuselage sides on the bottom of the stab with a pencil 88 Remove the stabilizer from the fuselage and very carefully strip away the covering material on the bottom between the two lines where the stab ...

Страница 26: ... shown in the fuselage top view CAUTION The rubber grommets act as shock absorbers and prevent engine vibration from damaging the electronics in the servos Do not over tighten the servo mounting screws to the point where they compress the rubber grommets so far that all shock absorbing ability is lost Tighten the screws just enough to make contact with the grommets and keep the servos in place 94 ...

Страница 27: ...a Pushrod Connector in the innermost hole of the rudder servo control arm NOTE A Pushrod Connector consists of a brass Connector body a 4 40 Set Screw and a Nylon Retainer Install the Tiller Bar Pushrod in the Pushrod Connector and Tiller Bar see full size plan Put the 90 bend of the pushrod in the hole in the plywood Tiller Bar the other end in the Pushrod Connector on the rudder servo arm 105 Te...

Страница 28: ...e pushrod wires 5 8 short of the holes in the aileron servo arm 113 Solder an R C Solder Link onto the end of each pushrod wire NOTE It s best to take the pushrods off for soldering You wouldn t want to drop a piece of hot solder and burn a hole through the wing Also make sure the pushrod wire sticks completely inside the barrel of the solder link 114 When done soldering untape the ailerons and in...

Страница 29: ...nsulate it from engine vibration and shock Use tape or rubber bands to hold the foam around the battery Install the wrapped battery pack inside the nose of the model under the fuel tank floor in the position shown on the plan fuselage side view RECEIVER 124 Drill a 1 16 dia hole completely through the bottom of the fuselage in the area where the receiver will be located This hole is for the receiv...

Страница 30: ...er to electronically adjust the total travel of the servos and thus the total travel of the control surfaces This is a very handy feature If you do not have this radio feature you can still make control surface travel adjustments by mechanical means Move the linkages in the directions shown to get more or less travel Why Solder Links You may be wondering why we provided R C Solder Links for the se...

Страница 31: ...ring Next slide a 2 flat metal washer on the wire and solder it place A Soldering Tip The secret to easy soldering is cleanliness Sand the washers and the wire where the washers are to be soldered and then wipe everything clean with alcohol before attempting to solder 134 Lay the Nylon Tailwheel Bracket in position on the bottom of the fuselage aligning the rear hole in the bracket with the hole i...

Страница 32: ...wo pieces of fuel tubing approximately 6 long Slip one piece onto the tank s fuel feed tube and the other onto the vent tube Run the loose ends of the fuel line tubing through the hole in the firewall at the same time that you are placing the tank in the fuselage 144 Slide the fuel tank up against the back of the firewall Cut a piece of scrap wood can be stick or sheet balsa or plywood to use as a...

Страница 33: ...L DOWN it is TAIL HEAVY DO NOT ATTEMPT TO FLY IT A tail heavy model is very dangerous and will most likely crash Lead weight will have to be added to the nose of the model to bring it into balance The weights can be glued to the inside of the fuselage cheeks in front of the firewall or inside the fuselage alongside the fuel tank There are also spinner weights available for tail heavy models Wherev...

Страница 34: ...ucceed in learning to fly R C However learning to fly model airplanes is not a skill you can learn overnight It s very similar to learning to fly a real airplane in that you should go through a learning phase with an instructor before you try to pilot the airplane yourself A lot of things can go wrong with these machines and if you are not prepared to deal with them instantly you will loose your n...

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