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SIG KADET EP-42B, Assembly Manual, Page: 11 / 16

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SIG KADET EP-42B Assembly Manual Download Page 11

BATTERY PACK:

❑

30) Remove  the  battery  hatch  from  the  bottom  front  of  the 

fuselage  by  turning  the  plastic  latch  90

O

.    In  the  battery 

compartment,  you  will  see  a  piece  of Velcro

®

tape  that  has  been

factory installed.  The Velcro

®

is used to hold the flight battery pack

in  position  for  flight.   The  use  of Velcro

®

makes  the  battery  pack

quickly and easily removed for recharging between flights.  Place a
charged flight battery into the battery hatch and secure it with the
Velcro

®

tape.  The complete radio system can now be checked and

adjusted as necessary, using the transmitter.  

SYSTEM TESTS:

❑

31) The completed radio and motor systems are now powered

up  and  tested  for  proper  operation.    Note  that  the  wing  and 
propeller are NOT yet installed at this point.

a) Make sure your transmitter aileron, elevator, and rudder trim 

levers are each in neutral position and that the throttle stick 
is in the full "low throttle" position.  Turn on your transmitter.

NOTE: Transmitter MUST always be the first to be turned on
and the last to be turned off!

b) In the fuselage battery compartment, plug the flight battery 

into  the  ESC.   You  will  hear  an  audio  tone  from  the  ESC, 
indicating that is recognizing the signal from the transmitter.

c) The elevator and rudder servos should now be working.  If 

necessary, reposition the servo output arms on the elevator 
and  rudder  servos  as  close  to  90

O

to  the  servo  case  as 

possible.    Be  sure  to  reinstall  the  output  arm  retaining 
screws after making the adjustment.

d) Move  the  elevator  stick  on  the  transmitter  to  check  for  the 

correct  direction  of  the  elevator  servo  and  elevators.    If 
necessary,  use  the  servo-reversing  feature  in  your 
transmitter  to  reverse  the  direction  of  the  servo,  and 
therefore,  the  elevator  movement.    Repeat  this  same 
procedure for the rudder servo.

e) With  the  rudder  and  elevator  servos  now  moving  in  the 

correct  directions,  check  the  neutral  positioning  of  the 
rudder and elevator surfaces.  If needed, adjust the V-bend 
in the pushrods to properly center these surfaces.

❑

32) Set the wing in place on the fuselage, plugging the aileron

servo chords into the Y-harness in the fuselage.   

a) Move  the  transmitter  aileron  stick  and  check  for  correct 

direction of movement.  If needed, use the servo-reversing 
feature in your transmitter to make the ailerons move in the 
correct direction.

b) If  necessary,  reposition  the  aileron  servo  output  arms  as 

close  to  90

O

to  the  servo  case  as  possible.    Be  sure  to 

reinstall  the  output  arm  retaining  screws  after  making  the 
adjustment.

c) With  the  servo  output  arms  now  squared  up,  check  the 

positions  of  the  two  ailerons.    Adjust  the  V-bend  in  the 
pushrods  as  needed  to  properly  align  both  ailerons  in  the 
centered neutral position.

❑

33)

IMPORTANT NOTE:

For safety, the propeller and spinner

should NOT be installed on the motor for this initial test!

a) Slowly  advance  the  throttle  stick  on  the  transmitter.    The 

motor  should  start  turning.    If  not,  your  throttle  channel 
needs to be reversed on the transmitter.  If this is the case, 
unplug the flight battery first, and then, reverse the throttle 
channel  in  your  transmitter.    To  continue,  plug  the  flight 
battery back into the ESC connector.

b) Again slowly advance the throttle stick.  The motor should 

begin  turning  in  proportion  to  the  amount  of  throttle  stick

b) Using the three T2 x 6 mm PWA screws that are provided,

mount  the  aluminum  motor  mount  disk  to  the  firewall,  as  shown.
After running the three screws fully in place, we suggest removing
them and "hardening" the threads in the plywood with a drop of thin
CA  glue.    Once  the  glue  has  set,  remount  the  disk  in  place  and
tighten the screws firmly.

c) Next prepare the motor shaft to accept the propeller.  In the

small hardware bag that came with the brushless motor and ESC,
locate the two 3.5 mm lock nuts and the 10 mm dia. metal washer.
Thread one of the lock nuts onto the motor shaft in reverse direc-
tion,  leaving  its  hex  end  pointing  forward.   Thread  this  nut  all  the
way  onto  the  shaft  until  you  run  out  of  threads,  as  shown.    After
that, slip the flat washer onto the motor shaft, and then screw the
remaining lock nut onto the end of the shaft - with it’s hex end going
on first, to be against the propeller when it is added later.

d) The  motor  is  now  reinstalled  into  the  aluminum  motor

mount  disk.    Use  a  1.5  mm  wrench  to  firmly  tighten  the  two
setscrews,  locking  the  motor  in  place.    Connect  the  three  red,
black, and white motor wires to the corresponding red, black, and
white wires from the ESC.  As shown, we kept these wires over to
one  side  of  the  ESC/motor  mount  box  to  allow  the  cowl  to  fit  in
place.

11

Summary of Contents for KADET EP-42B

Page 1: ...1 SIG Mfg Co Inc Wingspan 42 in 1067 mm Wing Area 330 sq in 21 3 dm2 Length 34 in 864 mm Flying Weight 24 26 oz 680 737 g Wing Loading 11 7 12 7 oz sq ft 36 39 g dm2 Radio Req 4 Channel Micro Receiver 4 Micro Servos ...

Page 2: ...rque Hitec HS 55 7 9 grams 15 in oz Airtronics 94091 9 0 grams 18 in oz NOTE Any other brand of servo that is in the same size and torque range will also work just fine 2 INTRODUCTION Congratulations on your purchase of the SIG KADET EP 42B The KADET EP 42B is the latest addition to the long line of legendary SIG KADET trainers Did you know that the first SIG KADET was introduced in 1973 Since tha...

Page 3: ... the possibility of warping the thin control surface parts Recommended Temperatures To adhere the covering 220O F 250O F 104O C 121O C To shrink the covering 300O F 320O F 149O C 160O C First use the hot iron to go over all the seams and color joints in the covering making sure they are all sealed down and well adhered Then hold the hot iron over the wrinkle to lightly shrink the material do not p...

Page 4: ...atch of epoxy glue Use a wire or stick to coat the inside of the slot in the end of the left wing panel with glue Also coat the stub of the plywood wing joiner that is sticking out of the right wing panel and the bare wood end ribs of both wing panels Then put the wing panels together Squeeze the panels tightly together aligning the leading and trailing edges of the wing panels with each other Wip...

Page 5: ...y appearance not wet A dry appearance indicates that almost all of the glue has properly soaked into the hinge and wood A wet appearance indicates that excess glue is puddled in the hinge gap Excess glue can become brittle with age and cut the hinge Also NEVER USE CA ACCELERATOR KICKER ON CA HINGES AILERON HOOKUP For this section you will need the assembled wing 2 aileron servos and appropriate ch...

Page 6: ...a pair of pliers to grasp the pushrod wire at the mark just made and then bend the plain end of the wire 90O towards the center of the wing Make the bend as sharp as possible e The excess length of pushrod wire can now be cutoff leaving a 3 16 end leg to pass through the control horn hole Use a good sharp pair of wire cutters to do this Clean off any burs on the end of the wire caused by the cutti...

Page 7: ...stabilizer sits with a sanding block until the stabilizer will sit level c Remove the stabilizer Mix a small amount of epoxy glue and apply it to the mating surfaces of the fuselage and opening in the plywood tray so that the ends of the servo arms line up with the plastic pushrod tubes already installed in the fuselage b Once you have the servos correctly positioned drill small pilot holes throug...

Page 8: ...tabilizer slightly if necessary until both measurements are the same Wipe off any excess glue using a paper towel or rag soaked in rubbing alcohol Allow the glue to dry 16 As received the rudder is only temporarily attached to the fin with 3 unglued CA hinges in the pre cut slots Refer back to page 3 step 4 of this manual for instructions on gluing CA hinges and use the same procedures described t...

Page 9: ... fuselage to make the next step easier to do d Use a pair of pliers to firmly grasp the pushrod wire at the mark just made Look inside the fuselage to make sure that the Z bend end of the pushrod is parallel to the jaws of your pliers What we re getting ready to do is bend the aft end of the pushrod wire 90O SIDEWAYS to the fuselage meaning sideways when the servo arm is re installed on the servo ...

Page 10: ...typically require soldering of these wires and this requires the use of a soldering iron and flux For our ESC and battery connectors we chose to use a Kavan 6321 K 2 connector set These great little connectors are small lightweight and self polarizing a Solder a battery connector to the two black negative and red positive wires on the ESC Solder the corresponding connector to your flight pack batt...

Page 11: ...ction of movement If needed use the servo reversing feature in your transmitter to make the ailerons move in the correct direction b If necessary reposition the aileron servo output arms as close to 90O to the servo case as possible Be sure to reinstall the output arm retaining screws after making the adjustment c With the servo output arms now squared up check the positions of the two ailerons Ad...

Page 12: ... trailing edges MOUNTING THE COWL 35 From the kit contents locate the plastic cowl and the four remaining T2 x 6 mm PWA screws Note that the correct mounting location and position of the cowl is with its forward face approximately 1 4 6 mm behind the front face of the 3 5 mm lock nut and centered with the motor a Slide the cowl in place over the motor and onto the front of the fuselage Use pieces ...

Page 13: ... it might go Some models will try to climb while others may want to go down Some will try to turn left others right Some models will be doing both at the same time It doesn t mean that there is anything wrong with the model but these minor differences must be trimmed out 13 sheet with a sharp 11 hobby knife or a sharp scissors Small decals can be easily applied to the model by simply removing the ...

Page 14: ...s an incorrect control input can produce almost instant problems that in turn demand almost instant correction This is especially true at lower flight altitudes A good flight instructor will climb your model to an altitude that gives him a good chance of saving your airplane when you make these inevitable mistakes This altitude is generally referred to as 2 mistakes high When you get into trouble ...

Page 15: ...h important liability insurance in case your R C model should ever cause serious property damage or personal injury to someone else ACADEMY OF MODEL AERONAUTICS 5161 East Memorial Drive Muncie IN 47302 Telephone 765 287 1256 AMA WEB SITE www modelaircraft org CUSTOMER SERVICE SIG MFG CO INC is committed to your success in both assembling and flying the KADET EP 42B ARF Should you encounter any pro...

Page 16: ......

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