background image

for  this  job  to  allow  time  to  position  the  stab  accurately  and
make any final adjustments that might be needed.  Apply the
glue to both sides and reset the stab in place.  Use pins to hold
it  in  place.    Recheck  the  alignment.    Wipe  away  any  excess
epoxy with rubbing alcohol and a soft paper towel.  Allow the
glue to set completely.

15) Pull the Fin and Rudder off their hinges and set the rud-

der aside for now.  Test fit the fin in place on top fo the fuselage
and stabilizer.  Check to see that the fin sits flush and perpen-
dicular to the stabilizer.

16) Glue  the  fin  in  place  using  slow  drying  epoxy  glue.

Apply  a  thin  coat  of  glue  to  the  bottom  of  the  fin  and  to  the
exposed  wood  on  the  stab.    With  the  fin  in  place,  sight  the
model  from  the  front  to  make  sure  the  fin  is  absolutely  90
degrees  upright  to  the  stab.    If  needed,  use  a  little  masking
tape to hold it in alignment.  Wipe off any excess glue rubbing
alcohol and a soft paper towel.

17) Hinge  the  rudder  to  the  fin  and  the  rear  of  the  fuse-

lageusing the same techniques you did for the other hinges -
refer to page 5 of this manual.  Make sure to line up the top of
the rudder flush with the top of the fin.  This will ensure the tail-
wheel bracket lines up correctly.  Let the hinges dry adequate-
ly before proceeding.

18) Look  closely  and  you  will  find  three  holes  pre-drilled

near  the  bottom  of  the  rudder  for  mounting  a  nylon  control
horn.    Install  the  control  horn  on  the  left  side  of  the  rudder,
using three M2 x 14mm screws.  Once again, it is advised to
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) Adjust  the  wheel  collar  shown  to  set  the  height  of  the

tailwheel wire.  Then check to see if the long steering leg of the
tailwheel wire is parallel to the bottom of the rudder.  The wire
may need to be tweaked slightly to make it parallel.  Remove
the  screws  and  reinforce  the  threads  with  thin  CA  as  we  did
with the control horns.  

c) Slide the bearing onto the wire that runs along the bot-

tom of the rudder.  The tab of the bearing will be epoxied into
the slot that is precut on the bottom of the rudder.  Test fit the
assembly to make sure everything will line up.

d) Mix  up  some  epoxy  and  put  a  dab  into  the  slot  in  the

rudder for the nylon bearing.  Re-install the tailwheel assembly
and  insert  the  nylon  bearing  tab  into  the  slot.    Clean  up  any
excess  epoxy  that  spills  out.   Tighten  down  the  M3  x  12mm
screws into the fuselage.   Let the epoxy dry.

RADIO INSTALLATION

For this section you will need:

(1) Radio Receiver (not furnished)
(2) Servos with Mounting Screws (not furnished)
(1) Plastic Cinch Straps

20) Install  the  rudder  and  elevator  servos  inside  the  fuse-

lage  in  the  built-in  radio  mounting  tray.    Note  that  the  rudder
servo goes on the right side of the airplane and the elevator 
servo goes on the left side.  Be sure to drill pilot holes through
the plywood tray for the mounting servo mounting screws.

8

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 ...

Reviews: