SIG KADET LT-40 EG Assembly Manual Download Page 6

(6) Nylon R/C Links; for ail(2); rud(2); elev(2)

(2) Brass Pushrod Connector; for thro(1); nose gear(1)

(2) Pushrod Connector Retainer; for thro(1); nose gear(1)

(2) Pushrod Connector Bolt; for thro(1); nose gear(1)

Miscellaneous

(2) 1/4-20 x 1-1/2" Nylon Wing Bolts

(1) Hardwood Wing Joiner

(1) Plywood Aileron Servo Tray

(1) Decal Sheet

Fuel Tank for Glow Engine

(1) Fuel Tank Body - 260cc (8.8 oz.)

(1) Rubber Stopper

(1) Metal Front Clamp

(1) Metal Rear Clamp

(1) M3 x 18mm Bolt

(1) Metal Clunk Pick-Up

(1) Fuel Tubing, inside tank

(1) Aluminum Tube - 3mm od x 60mm

(1) Aluminum Tube - 3mm od x 50mm

(1) Aluminum Tube - 3mm od x 40mm

Engine Mounts for Glow Engine

(1) Right Engine Mount

(1) Left Engine Mount

(4) M3 x 20mm Mounting Bolts, for mounts-to-firewall

(4) M3 Flat Metal Washers, for mounts-to-firewall

(4) 4-40 x 1” Mounting Bolts; for engine-to-mounts

(4) 4-40 Lock Nuts; for engine-to-mounts

(4) #4 Flat Metal Washers; for engine-to-mounts

Your KADET LT-40 ARF is covered with ORACOVER

®

, a premium

quality covering made in Germany, and sold in the U.S. by Hanger-
9 as UltraCote

®.

Colors

ORACOVER

®

#10 White (UltraCote

®

#HANU870)

and

ORACOVER

®

#71 Black (UltraCote

®

#HANU874)

and

ORACOVER

®

#23 Red (UltraCote

®

#HANU866) 

If sometime in the future you need replacement covering or 
matching paint for repairs, they are available from your local hobby
dealer or online from Hanger-9.

How To Tighten  Loose  Covering
After you open your KADET LT-40 and take all the covered parts
out of their plastic bags, the covering may begin to wrinkle. This is
not unusual and is no cause for alarm.

Your airplane was built and covered in a part of the world which
has relatively high humidity and therefore, the wood was likely 
carrying a fair amount of moisture. When exposed to drier air, the

wood typically loses this moisture, dimensionally "shrinking" in the
process.

In turn, this may cause some wrinkles.

However, 

wrinkles are easy to remove by just using a hobby type heat iron.
CAUTION: Trying to remove the wrinkles by hastily going over
them with a heat gun can lead to more problems. You should take
your time to carefully go over the entire model with a covering iron,
as we will describe.

We suggest  using a model airplane covering iron for this process.
Cover the iron's shoe with a thin cotton cloth, such as an old t-shirt,
to prevent scratching the covering as you work.

After covering your iron, the next step is to set the iron to the 
correct temperature. This is critical for achieving a good result!
The iron should be set to about 220

O

F - 250

O

F (104

O

C - 121

O

C) as

measured on the bottom of the iron using a thermometer.

If you do not have a thermometer, you can find the correct 
temperature by trial and error. Set your iron to a medium setting.
Glide the iron over some of the covering that is over over solid
wood, such as the sheeted wing center section.

Observe the 

covering to see if any bubbles appear.

If bubbles appear, the 

covering is getting too hot!  Turn down the temperature of the iron
and repeat the test.

If no bubbles appear, turn up the heat slightly and repeat the test.
Keep adjusting until you “zero in” on the correct temperature. Find
the temperature that will get the covering to stick down without
forming bubbles or causing the seams to pull away.

Once your iron is set to the correct temperature, go over the 
entire framework of the airplane, making sure that the covering is
securely bonded to the structure everywhere the covering comes
in contact with the wood underneath. This takes some time, but is
worth the effort.

After you have all the covering secured onto the solid areas, turn
the temperature of the iron up to approximatelly 300

O

F - 320

O

F

(149

O

C - 160

O

C). This is the correct temperature for shrinking the

covering material.

Use the iron to tighten up any wrinkles in the “open” areas of the
model (no wood underneath the covering). Glide the iron over the
wrinkle for a few seconds, then remove. Repeat until the covering
is tight with no wrinkles.

If wrinkles keep coming back on the tail surfaces, you may need to
“ventilate” the areas between the ribs. Otherwise the air that is
sealed in those relatively small areas will expand when the heat is
applied and actually cause the covering to stretch instead of
shrink. Use a pin to poke a tiny hole in the covering between each
rib, on the bottom of the part. That will let the expanding air
escape and the covering to shrink properly.

Caution When Using Heat Guns: You can also use a hobby-type
heat gun to shrink the covering, but you must be careful around
seams or color joints. Getting too much heat on the seams may
cause them to "creep" or come loose. You must also be careful
when using a heat gun when working around the windshield and
side windows - heat will distort the clear plastic material.

Recommended Temperatures:

To adhere the covering - 220

O

F - 250

O

F (104

O

C - 121

O

C) 

To shrink the covering  - 300

O

F - 320

O

F (149

O

C - 160

O

C)

6

COVERING MATERIAL

Summary of Contents for KADET LT-40 EG

Page 1: ...he model before each flight to make sure it is completely airworthy 3 To always fly your model in a safe approved location away from populated areas 4 To always fly your model in a safe manner Your first test flights should be made with the assistance of an experienced R C flyer LIMIT OF LIABILITY SIG Mfg Co Inc guarantees this kit to be free from defects in material and workmanship at the date of...

Page 2: ...fore you will need to find a qualified R C flight instructor to test fly the airplane and teach you how to fly it If this is your first radio control model airplane DO NOT attempt to fly it by yourself without a qualified instructor ARE YOU INSURED The governing body for radio control model airplanes in the United States is the ACADEMY OF MODEL AERONAUTICS sometimes referred to as the AMA While AM...

Page 3: ... 4500mAh LITHIUM POLYMER BATTERY PACK With the Maxx Products HC3528 1000 motor we use 3 cell 3S1P 4500mAh or 4 cell 4S1P 4500mAh Li po packs A 3 cell pack 11 1 volts provides flight performance similar to a 40 glow engine A 4 cell pack 14 8 volts provides flight performance similar to a 46 glow engine We find that 4500mAh lipo packs provide between 10 to 15 minutes of flight time depending on prop...

Page 4: ...4 Please check the contents of your kit box with these diagrams If any parts are missing contact SIG Mfg Co at 641 623 5154 Note Not all parts are shown at same scale ...

Page 5: ...ar Retaining Straps 4 M3 x 10mm Screws 2 4 5mm I D Plastic Wheel Spacers 2 4 5mm I D Wheel Collars with Set Screws Nose Gear Assembly 1 4mm dia Nose Gear Wire 1 2 3 4 Dia Nose Wheel 1 Nylon Nose Gear Steering Bearing 1 Nylon Nose Gear Steering Arm with Set Screw 4 M3 x 14mm Mounting Bolts 4 M3 Flat Washers 1 4mm I D Plastic Wheel Spacer 1 4mm I D Wheel Collar with Set Screw Spinner Assembly 1 2 di...

Page 6: ...step is to set the iron to the correct temperature This is critical for achieving a good result The iron should be set to about 220O F 250O F 104O C 121O C as measured on the bottom of the iron using a thermometer If you do not have a thermometer you can find the correct temperature by trial and error Set your iron to a medium setting Glide the iron over some of the covering that is over over soli...

Page 7: ...ue oozes out of the slot when you push the Wing Joiner in 4 Apply a liberal amount of Epoxy Glue to the end ribs of BOTH Wing Panels and to the exposed end of the Wing Joiner 5 Slide the other Wing Panel onto the Wing Joiners and up tight against the first panel Firmly press the Wing Panels together and wipe off any excess Epoxy Glue with a paper towel and rubbing alcohol Make sure the two Wing Pa...

Page 8: ...leaners Then 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 will keep the decal from actually sticking to the model until you have had time to shift it around into exact position Once you have it in position use a piece of stiff cardboard or sh...

Page 9: ...ly onto the Fuselage with slow drying Epoxy Glue Mix the Epoxy and spread a generous coat evenly on the area of the Fuselage where the Stabilizer goes Remount the Stabilizer onto the Fuselage using the edges of the cutaway covering on the bottom to get the Stabilizer back into correct alignment on the Fuselage Press the Stabilizer down firmly and pin it in correct position Use a paper towel and ru...

Page 10: ...ush the wires down tight into the groove NOTE If the wire doesn t want to fit completely down into the groove of the landing gear block it may be necessary to remove a little material from the inside edge of the hole to allow for the radius of the bend in the wire Do this with a round file or modeling knife 4 Place the two nylon Landing Gear Straps over the Main Gear Wires as shown in the picture ...

Page 11: ...do using a long 1 4 dia drill bit to drill a new hole aligned with the engine s throttle arm through the firewall and through the second fuel tank support former behind it Locate the following parts from the kit contents 1 Right Glass Filled Engine Mount 1 Left Glass Filled Engine Mount 4 M3 x 20mm Phillips Head Bolts for mounts 4 M3 Flat Metal Washers for mounts 4 4 40 x 1 Slotted Bolts for engin...

Page 12: ...e Spinner in place and check to see if the Propeller clears the openings If necessary loosen the Prop Nut reposition the Propeller re tighten the Prop Nut and then check again Adjust as many times as necessary to make sure that the Propeller comes out the center of the openings THE PROPELLER MUST NOT TOUCH THE SPINNER When you have it in the right position tighten the Prop Nut 4 Install the Spinne...

Page 13: ... the cap of the tank If it s leaking tighten the screw in the cap a little at a time until the leaking stops 8 Trial fit the tank in place inside the fuselage to familiarize yourself with how it mounts The neck of the tank should fit through the hole in the firewall 9 Apply a generous bead of silicone sealer around the neck of the tank regular household bathroom type silicone sealer available at m...

Page 14: ...chieve access to the engine s needle valve and to the fuel line tubing at the carb NOTE A Dremel tool or similar power tool with a coarse grit sanding drum is without a doubt the best tool to use for removing the cowling material quickly easily and accurately However if you do not have access to such a power tool you can cut the opening with a drill and a hobby knife First drill a series of almost...

Page 15: ...the exact location of your engine s carburetor control arm Some arms may be a little closer to the fuselage side while some may be closer to the engine s center line For most 2 stroke 40 46 R C engines it will simply be a matter of increasing or decreasing the angle of these two bends to change the total distance of the offset in the wire If you need to change the bends change both bends the same ...

Page 16: ...S If you are using a different brand electric motor or motor mount you need to make sure that the combination you select can provide exactly 4 1 2 distance from the front of the prop adaptor to the front of the firewall i e back of the mount 4 1 2 is the distance needed for the cowling to fit properly 1 There are four sets of cross hairs etched on the front of the plywood firewall to mark the loca...

Page 17: ...s sticky back 7 Cut 3 small pieces of 3 4 wide hook and loop tape not supplied and stick them on the battery compartment floor where shown in the following photo Put a long strip of the mating tape on the bottom of each of your battery packs This will keep your battery pack from shifing position in flight 8 Cut two 9 long pieces of 3 4 wide hook and loop strap material not supplied Install the two...

Page 18: ...switch CAUTION Make sure the opening for the switch s on off lever is just slightly bigger than the lever so that the switch will operate without catching or binding on the wood INSTALL THE ELEVATOR RUDDER SERVOS Mount your elevator and rudder servos in the plywood Servo Tray using the screws and rubber grommets that came with your radio system Be sure to orient the servos in the tray as shown her...

Page 19: ...lon Control Horn in position 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 the bit with your fingers or a pin vise a power drill is not necessary 2 Mount the Control Horn onto the rudder with the Retainer Plate and Bolts 3 Cut one of the 10 Threaded Rods to 5 overall length Cut the plain end of the rod...

Page 20: ...ow With full right and left movement of the transmitter s rudder control stick the rudder should move approximately 1 right and 1 left NOTE If you are not getting the correct amount of rudder travel try using your transmitter s End Point Adjustment feature to dial in the proper amount Also fine tune the overall length of the rudder pushrod by screwing one or both of the nylon R C Links further in ...

Page 21: ...ten the servo mounting screws to the point where they compress the rubber grommets too far 2 The aileron pushrods are made from two 10 Threaded Steel Rods Screw a nylon R C Link halfway onto the threaded end of each rod Then clip the R C Links into the holes in the Nylon Aileron Connectors and line up the pushrods with the servo arms 3 Tape the ailerons in neutral position the bottom of the ailero...

Page 22: ... receiver seems loose in the nose of the model pack additional pieces of foam rubber around it to make sure it cannot move around in flight Make sure the receiver antenna wire is accessible at the back of the receiver free and clear of all the other wires 4 NOTE The following step describes running the antenna outside the airplane along the bottom of the fuselage There are a lot of other ways to h...

Page 23: ... 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 If the airplane sits on your fingertips with the tail down it is tail heavy DO NOT ATTEMPT TO FLY IT A tail heavy model is very dangerous and will most likely crash Weight will have to be added to the ...

Page 24: ...e your brand new airplane in a crash To practically eliminate any chance that your first flight will end in disaster we strongly recommend that you seek the assistance of a competent R C pilot to help you with your first flights An instructor serves two purposes First he will take your model up for its first test flight to make sure it is performing properly before you try to fly it When a brand n...

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