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8) Slide a second Wheel Collar onto the axle and up to the

wheel.    Leave  a  small  gap  between  it  and  the  wheel,  so  the
wheel  will  turn  freely,  and  then  tighten  the  wheel  collar  set
screw. 

9) Check the orientation of the landing gear to make sure

you know which way is forward.  The landing gear should angle
to  the  rear  of  the  airplane.   Test  fit  the  wheel  pants  over  the
wheels and line up the predrilled mounting holes.  Secure the
wheel pants in place with two M3 x 12mm socket head bolts
on each pant.

10) Using three M4 x 20mm Socket-Head Bolts and three

M4  Split-Ring  Lock  Washers  attach  the  landing  gear  to  the
fuselage.

TAIL SURFACE INSTALLATION

For the following steps you will need:

(1) Fuselage
(1) Wing
(1) Stabilizer & Elevator set.
(1) Vertical Fin & Rudder Set
(2) M6.5 Nylon Wing Bolts
(1) Tailwheel assembly, including Wheel and Wheel Collars
(2) M3 x 12mm Screws
(1) Nylon Rudder Steering Clasp with Bolt and Hex Nut
(2) Nylon Control Horns
(6) M2 x 14mm Sheet Metal Screws

11) Just like the aileron hinges, the elevator hinges are fac-

tory installed, but not yet glued.  Hinge the elevator assembly
to  the  stabilizer,  using  the  same  techniques  you  did  for  the
ailerons  -  refer  to  page  5  of  this  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.  Continue turning in the screws
until  the  horn  and  retaining  plate  are  snug  against  both  sur-
faces of the elevator.  Do not over tighten the screws and crush
the wood.

13) Bolt  the  wing  in  place  on  the  fuselage  with  the  Nylon

Wing  Bolts  provided.    Then  pin  the  stabilizer  and  elevator
assembly in place on the fuselage.  It's time to check the align-
ment of the stabilizer to the wing.

a) First view the model from directly in front.  Check to see

if the stabilizer is level with the wing.  You should find it to be
very close.  If necessary use a sanding block to fine tune the
stabilizer platform to level the stabilizer to the wing.

b) Next use a tape measure to measure the distance from

each stab tip to the back edge of the wing - the distance should
be equal on both sides.  Adjust if necessary. When you are sat-
isfied with the alignment, proceed to the next step.

14) The horizontal stabilizer is now glued in place into the

rear of the fuselage.  We suggest using slow drying epoxy glue

7

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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