Skyshark P-40N Manual Download Page 2

Thank  you  for  purchasing  the  P-40N  ARF  from  Skyshark
R/C.  For  the  first  time,  R/C  enthusiasts  have  a  choice  in
good quality scale aircraft designs. Good looks and flying
characteristics, and a uniqueness that is sure to turn heads
wherever you take your airplane!

Covering

When  you  receive  the  P-40,  there  will  normally  be  some
loose or wrinkled covering. This is due to climate changes
that  take  place  during  shipping.  The  parts  are  covered  in
low temperature Solartex so they don’t require a lot of heat
to remove wrinkles. The best way to tighten the covering is
with  a  heat  gun  set  for  low  heat.  Hold  the  gun  about  6”
away from the covering and move it in fast circles around
the  parts.  Be  careful,  too  much  heat  in  one  place  at  one
time will damage the covering or paint. 

The Skyshark P-40N is painted with fuel proof 2-part paint.
We have tested it using 25% nitro and standard gasoline. If
you  would  like  to  do  additional  weathering  and  detailing,
we  have  found  that  it  is  compatible  with  most  other  fuel
proof paint. If you plan to add details, we recommend you
use a piece of the canopy that was cut off to ensure paint
compatibility.

CAD Design

CAD  design  allows  strength  to  be  built  into  the  airplane
without sacrificing weight. Because of this, we were able to
make  the  P-40  lighter  than  most  current  airplanes  of  this
type.

Plastics and Fiberglass

The cowl is accurately reproduced in fiberglass and paint-
ed to match the fuselage. The shark mouth is hand painted
using fuel proof paint. Engines should be mounted invert-
ed to best hide them and for adequate cooling. The canopy
is  accurately  reproduced  in  clear  plastic  and  painted  to
match.  Use  care  when  trimming  the  canopy  because  the
paint  makes  them  fragile.  Use  a  canopy  scissors  to  trim
close  to  the  lines,  then  us  a  rotary  sander  to  remove  the
rest.

Engine Options

Engine choices range from 45 - 65cc. We used a Zenoah
G45  and  Revolution  50  in  our  prototypes.  Balance  was
right on with either engine but the cowl had to be cut away
in order to fit the Zenoah carb and exhaust.

Cockpit Detail

A fully detailed laser cut and engraved instrument panel is
included in the kit. It does require some simple assembly
but detailed instructions are provided.  

Repairs and Replacement Parts

Repairs  can  be  made  easily  using  readily  available  ply-
wood,  balsa  and  Solartex  or  other  fabric  type  covering.

Matching paint can be purchased from us. If you would like
to  purchase  replacement  parts,  please  call  our  customer
service line at 1-866-854-6100. We will be happy to assist
you with anything that you need.

General Building Information

The  Skyshark  P-40  was  designed  to  be  assembled  and
flown by someone with previous giant scale airplane expe-
rience. This instruction manual may leave out some basic
steps  that  are  common  to  all  model  airplane  assembly.
Please  read  the  manual  completely  before  beginning
assembly. Once you begin assembly, you will not be able
to return the plane for a refund if you decide it is too diffi-
cult.

Occasionally  hints  will  be  included  at  certain  building
steps.  These  are  not  required  for  completion,  rather  they
are tips intended to ease a particular process.

All hardware needed to complete the P-40 is included in the
kit.  The  pushrods  and  clevises  are  4-40.  The  other  hard-
ware is USA made in SAE sizes. If you need replacements,
any 4-40 clevises or pushrods will work.

We  have  flown  this  plane  using  60  oz.  in.  servos  in  the
ailerons,  flaps  and  elevators  without  any  problems.  If  you
feel more comfortable, you are welcome to use servos with
higher  torque  ratings.  A  high  torque  metal  gear  servo
MUST be used on the rudder. 

This aircraft is not a toy. It must be flown in a responsible
manner according to the rules set forth by the Academy of
Model Aeronautics. The builder assumes the responsibility
for  the  proper  assembly  and  operation  of  this  product.
Skyshark R/C shall have no liability whatsoever, implied or
expressed,  arising  out  of  the  intentional  or  unintentional
neglect, misuse, abuse, or abnormal usage of this product.
Skyshark R/C shall have no liability whatsoever arising from
the improper or wrongful assembly of the product nor shall
it have any liability due to the improper or wrongful use of
the assembled product. Skyshark R/C shall have no liabili-
ty for any and all additions, alterations, and modifications of
this product.

Before  beginning  assembly

:  Check  all  components  for

shipping damage. Be sure to look inside the fuselage and
wings at the servo bay locations for any hidden damage. If
you notice any damage, notify us immediately for replace-
ment parts. 

Also check all formers inside the fuselage to

insure they are secured properly to the fiberglass

. If you

find any weak areas, sand the area and use 5 min epoxy to
secure the formers. You can also add some 1 oz. fiberglass
cloth for extra reinforcement. This is especially important in
the firewall and tail gear area.

Having said that mouthful, it’s time to start building the best
airplane on the market!

1

Summary of Contents for P-40N

Page 1: ...alsa and ply wing covered and painted Pin hinges for all control surfaces Hand Painted fiberglass cowl Quality USA made 4 40 hardware included Extra heavy duty fiberglass accessories Designed for retr...

Page 2: ...from us If you would like to purchase replacement parts please call our customer service line at 1 866 854 6100 We will be happy to assist you with anything that you need General Building Information...

Page 3: ...e to stay on the rud der or you will experience ground looping There is nothing out of the ordinary to note about takeoffs Advance the the throttle slowly and let the plane build up speed It will lift...

Page 4: ...he pushrods line up with the hardwood blocks in the ailerons and flaps 4 Align the servo on the servo cover so the arm is centered in the slot Glue the mounting blocks to the servo cover as shown usin...

Page 5: ...to the holes in the wing trailing edge Tape the flap in place and allow the epoxy to dry There should less than a 1 16 gap between the flap and trailing edge of the wing Repeat the above process for t...

Page 6: ...ol surface centered attach a 4 40 clevis to the servo arm and control horn Measure and cut a piece of 4 40 threaded rod to the correct length You can either solder one clevis onto the con trol rod or...

Page 7: ...ed locations 22 Place the template onto the fuselage so the crease is facing up Make sure it is flush against the wing saddle and with the front dowel mounting plate Mark the location of the wing dowe...

Page 8: ...s into place Insure the dowels extend 5 8 from the wing leading edge 26 Place the wing on the fuselage and double check the wing dowel alignment Once everything is aligned drill two 1 4 holes in the f...

Page 9: ...ned up edges wrong con tour etc you can adjust it by taping the edges with masking tape and using a heat gun to soften the fiberglass while carefully pressing it into place with a gloved hand You may...

Page 10: ...d fit the belly pan to the wing Apply weight to the belly pan until the epoxy has cured We use socks filled with lead shot for this task but maga zines or plastic bags filled with sand also work 37 On...

Page 11: ...tom of the stab through the tail wheel retract area Apply a thin layer of epoxy to the stab in this area in insure everything is secure 45 Place a 1 1 8 control horn 1 8 from the inner edge of one ele...

Page 12: ...gned use a 7 32 drill bit to mark the bolt holes on the firewall box 52 Remove the mount and drill four 15 64 holes in the firewall 53 Install four 10 32 blind nuts in the back of the firewall and che...

Page 13: ...as is required then you may need to make a small adjustment of the cowl in order to fit it per fectly to the spinner backplate 58 Once you are sure of the correct cowl alignment drill 5 64 holes at v...

Page 14: ...x 3 8 button head screws and plastic washers 65 Attach the spinner backplate and prop to the engine and slide the engine in place so it is centered on the cowl opening and 1 8 from the front of the c...

Page 15: ...Connect the 4 40 ball link adapter to the control arm and install the arm on the servo 73 Cut a 4 40 threaded rod in half and thread a 4 40 nut onto one end Thread that end into the ball link adapter...

Page 16: ...spaced 1 8 hinge holes in the verti cal stab 81 Mark the the holes in the same location on the rudder and drill to 1 8 Note You many want to cut a small slot in the beveled edge of the rudder at each...

Page 17: ...rance Adjust the position as neces sary for proper clearance 92 Mark and drill four 3 32 mounting holes Remove the retract and put a few drops of thin CA in each hole 93 Install the airline per the ma...

Page 18: ...erate the valve 102 Apply 5 min epoxy to the edges of the wheel well covers and fit in place Place weights on the covers until the epoxy cures 95 Attach the wheel to the retracts 96 Retract the gear a...

Page 19: ...cures 106 Locate the black instrument panel clear gauge lens and paper gauge face 107 Cut the paper gauge face and clear lens piece to size as shown 108 Use medium CA or 5 min epoxy to glue the clear...

Page 20: ...Note This is the forward most CG You can gradually move it back as you become com fortable flying the plane 116 Carefully cut the exhaust stacks along the outside of the mold ed lines Sand them along...

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