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c) Run the ESC's servo cord back to the receiver and plug

it in.

d) Connect the ESC's motor wires to the motor.  Operate

the motor and check the direction of rotation.  Always do this
without a propeller attached!  If you need to reverse the rota-
tion,  refer  to  the  instructions  that  came  with  the  motor  and
ESC.

e) Secure the motor/esc wires to the motor box to prevent

them from rubbing on the motor as it is spinning.

SAFETY ISSUE:

We strongly recommend the use of an "arm-

ing switch" for your motor installation.  With an arming switch
you can install your battery pack in the airplane and hook up
the  wires  without  danger  of  the  motor  starting.    The  arming
switch keeps the electricity away from the motor until you "arm"
it  when  you  are  ready  to  takeoff.   The  most  common  arming
switches  are  a  simple  external  plug  that  puts  a  break  in  the
positive battery lead to the motor, such as the Maxx Products
Arming Switch shown below.  There are also arming switches
built into some of the advanced ESCs now on the market.

30)  Secure the battery to the tray.

a) Locate the hook and loop straps and run them down the 

outside  slots  in  the  battery  tray.    They  should  form  a  loop
around the tray and where the battery will go.  For added secu-
rity  you  can  install  some  sticky  back  hook  and  loop  material
(not included) on the battery tray as well as your battery to fur-
ther secure it to the tray.

31) Attach the canopy to the Fuselage Top Hatch.

a) Locate  the  plastic  canopy  and  the  covered  wooden

Fuselage Top Hatch.  Test fit the canopy on the hatch.  Allow
the canopy to overhang the rear of the hatch by 1/8" to 1/4".  

b) Permanently  glue  the  canopy  on  to  the  hatch  with  a

flexible RC-56 type glue (not supplied).  Place a narrow bead
of glue all around the edge of the canopy where it will meet the
frame.

c) Place  the  canopy  on  the  frame  and  confirm  that  it  is

properly aligned.  Lock it in place with some masking tape to
dry.  Use a wet paper towel to clean up any glue that seeps out
from the edges.  

COWLING INSTALLATION

For this section you will need:

(1) Fuselage
(1) Fiberglass Cowling
(4) M3 x 10mm Screws

32) Mount  the  cowling  on  the  fuselage  with  the  four  M3  x

10mm Screws provided.  Notice that the holes for the four cowl
mounting screws are already pre-drilled in the cowling - two on
each side.

a) First,  test  fit  the  cowling  in  place  on  the  fuselage.    As

you pass it over the motor, make sure all the wires are out of
the  way.    Carefully  adjust  the  exact  position  of  the  cowling.
Make sure you have adequate clearance between the front of
the  cowl  and  the  back  of  the  spinner,  and  that  the  spinner
backplate is centered in the hole.  Use a low tack tape to hold
the cowling securely in place for the next step.

b) Use a 5/64" or #45 bit to drill a pilot hole for the top left

cowl mounting screw.  Center the drill in the hole in the cowl-
ing and drill into the fuselage side. Install an M3 x 10mm screw
in the pilot hole - do not over-tighten the screw.

11

Summary of Contents for SBACH XA-41 EP ARF

Page 1: ...Loading 19 6 21 9 oz sq ft 60 67 g dm2 Just add your own radio and electric power system Radio Req 4 Channel with 4 Micro Servos Electric Power 32 Class Brushless Motor 700 900 kv 600 800 watts 60 75A Speed Control ESC 4S 2500 4000 mAh Lipo Battery Pack SIG MFG CO INC PO Box 520 Montezuma IA 50171 0520 www sigmfg com Copyright 2013 SIG Mfg Co Inc KIT NO SIGRC105EPARF ...

Page 2: ...ions EDGE LITE 75 ESC in all our Sbach XA 41 prototypes This is an excellent switching type ESC that has a built in 5 amp BEC that is safe to use with a 4 cell lipo battery pack Important Note BEC Battery Eliminator Circuit allows you to use the same battery pack to power both your motor and your radio system eliminating the normal radio battery pack When the single battery pack runs down in fligh...

Page 3: ...glued 1 Left Wing Panel Aileron hinges not glued 1 Aluminum Tube Wing Joiner 2 M6 5 x 45 mm nylon wing bolts with T Head 1 Horizontal Stabilizer Elevator hinges not glued 1 Vertical Fin Rudder hinges not glued 1 Fiberglass Cowling 4 M3 x 10mm Screws for cowl mounting 1 Aluminum Right Main Landing Gear 1 Aluminum Left Main Landing Gear 3 M4 x 20mm Socket Head Bolts for mounting landing gear 2 2 1 8...

Page 4: ...et the expanding air escape and the covering to shrink properly Note that the black checkerboard sections of the model are done with adhesive backed vinyl and care should be taken when shrinking covering around them The vinyl will shrink and melt with too much heat A heat gun is preferred for these areas of the Sbach Caution When Using Heat Guns You can also use a hobby type heat gun to shrink the...

Page 5: ...ing to push it straight onto all the hinges at once c Adjust the aileron so that the tip of the aileron is flush with the wing tip The ailerons should be tight against the pins in the hinges to minimize the gap between the wing and the aileron The aileron is now in the proper position for perma nently gluing them in place with thin CA glue d Flex the aileron down and hold it in this position Remov...

Page 6: ... and come loose from the control horn by sliding the piece of Fuel Tubing over the arms of the clevis Also tighten the M2 Hex Nut up against the back of the clevis FUSELAGE ASSEMBLY INSTALL THE MAIN LANDING GEAR Locate the following parts from the kit contents 1 Fuselage 2 Aluminum Main Landing Gear 4 M4 x 20mm Socket Head Bolts 4 M4 Split Ring Lock Washers 2 2 1 4 dia Main Wheels 2 4mm dia Thread...

Page 7: ...manual Let the hinges dry adequately before proceeding 12 Look closely and you will see three holes pre drilled in one of the elevators for mounting a nylon control horn Screw the control horn in position on the bottom of the right elevator using three M2 x 12mm screws When the tips of the screws begin to emerge at the top surface of the elevator add the con trol horn s nylon retaining plate Conti...

Page 8: ...o remove the screws and reinforce the threads into the wood with some thin CA Then reinstall the control horn and the screws TAILWHEEL INSTALLATION 19 Locate the Tailwheel assembly and the nylon bearing a Temporarily mount the Tailwheel assembly in place on the lower rear end of the fuselage using two M3 x 12mm screws Note that there are two pilot holes already in the fuse lage for the screws b Ad...

Page 9: ...ck the elevator from neutral position and then unclip the clevis from the control horn Remove the clevis and the hex nut completely off of the pushrod and set them aside Now pull the pushrod out of the fuselage from the servo end It will be easier to complete the next three steps with the pushrod out of the airplane e Cut off the pushrod wire 1 4 past the mark made at the servo end in step c Then ...

Page 10: ... adjustment slots on both sides of the box four marks total c After you have all four slots marked carefully align the front face of the firewall to line up with the marks Make sure you end up with the firewall straight and square in the box If it is not recheck your marks and adjust as necessary d Tack glue the firewall in place Recheck once more to make sure that the front of the firewall is at ...

Page 11: ...e it to the tray 31 Attach the canopy to the Fuselage Top Hatch a Locate the plastic canopy and the covered wooden Fuselage Top Hatch Test fit the canopy on the hatch Allow the canopy to overhang the rear of the hatch by 1 8 to 1 4 b Permanently glue the canopy on to the hatch with a flexible RC 56 type glue not supplied Place a narrow bead of glue all around the edge of the canopy where it will m...

Page 12: ...nd precision pattern flying Note Measurements are aft of the leading edge of the wing at the fuselage sides DISTANCE MAC 3 24 32 3 44 34 3 65 36 If you are unsure where to start a balance point approximately 3 aft of the leading edge is a safe bet for initial test flights After test flying you can adjust the balance point to fit your flying style Remember it has been said that a nose heavy model m...

Page 13: ...he airplane making sure the surfaces are moving in the correct directions Also check each control linkage to be sure they are secure and that nothing is loose With all the controls checked make a range check with your radio system making sure everything is working perfectly For take off the airplane should be lined up with the center of the field with the nose pointed directly into the wind Hold a...

Page 14: ...ovides you with important liability insurance 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 AMA WEB SITE modelaircraft org CUSTOMER SERVICE SIG MFG CO INC is committed to your success in both assembling and flying the SBACH ...

Page 15: ...15 SBACH XA 41 LOG BOOK Date of first flight ...

Page 16: ...rom the fuselage start by first sliding the hatch forward about 1 4 to disengage the magnets and the rear tabs from the fuselage Then lift up on the back end of the hatch Pull the hatch up and back to disen gage the front pins and lift the hatch off of the fuselage Copyright 2013 SIG MFG CO INC SIG MFG CO INC 401 S Front St Montezuma Iowa 50171 U S A Printed in Vietnam ...

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