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5

❑

4) As received,  the  ailerons are  only  temporarily attached  to

the wing with unglued CA hinges in the pre-cut slots.  In this step,
we will glue the aileron hinges permanently in place.

a) Working on one aileron at a time, first push the aileron up 

firmly against the back of the wing.  Check to make sure the 
aileron  is  centered  in  the  wing  opening.    Next,  set  the 
proper amount of gap between the aileron and the wing by 
deflecting  the  aileron  about  45

O

each  way.    This  will 

automatically set the proper hinge gap.  Keep in mind that 
for  best  control  response  the  gap  should  be  as  small  as 
possible,  but  big  enough  to  allow  full  movement  of  the 
aileron.  Make sure everything is functioning properly before 
proceeding to the next step.

b) With a fine applicator tip on your glue bottle, carefully place 

2-3 drops of Thin CA glue directly onto the hinge in the gap.  
You  will  notice  that  the  glue  wicks  into  the  wood  and  the 
hinge.    Quickly  turn  the  part  over  and  apply  2-3  drops  of 
glue to the other side of the hinge.  Continue this process 
until  you  have  glued  both  sides  of  all  the  aileron  hinges.   
Keep a rag handy to wipe off any excess Thin CA glue.  (If 
you  get  some  glue  smears  on  the  plastic  covering,  don't 
worry about them right now.  Once all the hinges are glued, 
you  can  go  back  to  clean  the  smears  off  with  a  little  CA 
Debonder on a rag or paper towel. 

c) Let the glue dry a minimum of 10 minutes before flexing the 

hinges.  At first, you might notice a little stiffness in the joint.  
This  will  go  away  after  the  hinges  have  been  flexed  back 
and forth a couple dozen times.

d) Repeat steps a, b, and c to hinge the other aileron.

VERY  IMPORTANT:

It's  critical  that  you  only  make  one 

application  of  glue  to  each  side  of  a  CA  hinge.    If  you  apply 
additional  glue  to  the  hinge  after  the  first  application  of  glue  is
already dry, the second application of glue will merely puddle in the
hinge  gap  and  make  the  hinge  too  stiff  to  operate  properly.   The
excess glue can also weaken the hinge!  When properly glued, the
portion of the hinge that you see in the hinge gap should have a
dry 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 chords (see radio notes at beginning of this book),
2 aileron pushrods (the short ones), 2 nylon control horns, and 2
nylon pushrod keepers.

❑

5) Looking into the aileron servo mount opening in the bottom

of the wing, you will find a short length of scrap wood with a string
tied  to  it.   The  other  end  of  this  string  is  tied  to  another  piece  of 

scrap  wood  in  the  round  hole  near  the  center  of  the  wing.   This
string is used to pull the aileron servo chord through the wing, from
the servo mount towards the center section, in the following steps.

a) Working on one aileron at a time, plug a 6" servo extension 

chord onto the end of your aileron servo wire.  Secure this 
connection with a piece of plastic tape.

b) With a needle nose pliers, grip hold of the scrap wood in the 

servo  mount  opening.    Gently  break  the  wood  loose  from 
the  wing  structure,  and  then  pull  the  wood  and  string  a 
couple inches out of the opening.  Untie the string from the 
wood piece, and re-tie it securely to the end of your aileron 
servo chord.

c) Now break loose the other end of the string at the center of 

the wing, and carefully begin pulling the end of the aileron 
chord down into the servo mount opening and through the 
wing.    You  will  encounter  obstructions  as  the  servo  plug 
bumps into the rib structure inside the wing.  When you do, 
don't pull too hard on the string!  You will find that by gently 
tugging  back  and  forth  alternately  on  the  string  at  the 
center and then on the servo chord at the opening, that you 
can  eventually  work  the  plug  past  the  obstructions.    Keep 
feeding the servo chord through the wing until the end plug 
comes out the hole at the center of the wing.  Remove the 
string from the end of the servo chord and use a piece of 
tape  to  hold  the  chord  to  the  wing  for  now  (so  it  can't  fall 
back in the hole).

d) Mount the aileron servo in the wing, using the screws that 

came with the servo.

Содержание KADET EP-42B

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 16: ......

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