SIG SOMETHIN EXTRA ARF Assembly Manual Download Page 18 | Manualshive

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SIG SOMETHIN EXTRA ARF Assembly Manual Download Page 18

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LIMIT OF LIABILITY

The craftsmanship, attention to detail, and actions of the builder/flyer of this model airplane kit will
ultimately determine the airworthiness, flight performance, and safety of the finished model. SIG MFG. CO.’s
obligation shall be to replace those parts of the kit proven to be defective or missing. The user shall
determine the suitability of the product for his or her intended use and shall assume all risk and liability in
connection therewith.

CUSTOMER SERVICE

SIG MANUFACTURING COMPANY, INC. is totally committed to your success in both assembling and flying
the SOMETHIN’ EXTRA

®

ARF kit. Should you encounter any problem building this kit or discover any

missing or damaged parts, please feel free to contact us by mail or telephone.

SIG MANUFACTURING COMPANY, INC.

P.O. Box 520

Montezuma, IA 50171-0520

SIG MODELER’S ORDERLINE: 1-800-247-5008

(to order parts)

SIG MODELER’S HOTLINE: 1-641-623-0215

(for technical support)

SIG WEB SITE: www.sigmfg.com

WARNING! THIS IS NOT A TOY!

Flying machines of any form, either model-size or full-size, are not toys! Because of the speeds that
airplanes must achieve in order to fly, they are capable of causing serious bodily harm and property
damage if they crash. IT IS YOUR RESPONSIBILITY AND YOURS ALONE to assemble this model
airplane correctly according to the plans and instructions, to ground test the finished model before each
flight to make sure it is completely airworthy, and to always fly your model in a safe location and in a safe
manner.

The first test flights should only be made by an experienced R/C flyer, familiar with high

performance R/C aircraft.

The governing body for radio-control model airplanes in the United States is the ACADEMY OF MODEL
AERONAUTICS, commonly called the AMA. The AMA SAFETY CODE provides guidelines for the safe
operation of R/C model airplanes. While AMA membership is not necessarily mandatory, it is required by
most R/C flying clubs in the U.S. and provides 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: www.modelaircraft.org

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Summary of Contents for SOMETHIN EXTRA ARF

Page 1: ... computer radio systems such as the Hitec Flash 5X or the Airtronics RD 6000 These radio systems allow you to fine tune your control surfaces to exactly your style of flying In addition you ll be able to set up the ailerons to act as flaperons which can lend a whole new dimension to your flight routines Using such radios you will not need a Y harness for the aileron connections ENGINES PROPELLERS ...

Page 2: ...ay Brite Silver Solder product COMPLETE KIT PARTS LIST The following is a complete list of all parts contained in this kit Before beginning assembly we suggest that you take the time to inventory the parts in your kit Note that the hinges for the rudder elevator and ailerons are in place in the kit These have not yet been glued BASIC AIRCRAFT PARTS 1 each Fuselage 1 each Fuselage Canopy Hatch With...

Page 3: ...0mm Diameter Main Wheels 1 each 1 0 25mm Diameter Tail Wheel 17 each CA Hinges Rudder 3 Elevator 6 Ailerons 8 1 set Adjustable Width 40 Size Motor Mounts 1 each Fuel Tank 260cc 8 8 oz With All Fittings 1 each 3 mm Plywood Aileron Position Guide APG 1 each 5mm Dia x 150mm Hardwood Dowel Rear Wing Positioning Dowel 2 each Black Foam Rubber 10mm x 80mm x 200mm Radio Fuel Tank Packing Material 1 each ...

Page 4: ... the cable a little from the root rib end of the line Use a pin vise and a small dia bit to drill four small guide holes through the servo rails for the servo mounting screws Use the screws supplied with your radio system to mount the servo securely in place to the servo rails Repeat this procedure with the remaining wing panel 5 The ailerons are now hinged to the wing panels The supplied hinges a...

Page 5: ...t hole in the servo output arm and place the arm back onto the servo in the correct position facing inboard at 90 to the servo Place the nylon aileron horn onto the leading edge of the aileron with it s holes lined up with the hinge line The upright arm of the horn should be parallel with the servo In this position use a pencil to mark the two mounting hole locations in the horn s base onto the su...

Page 6: ...sharp 11 blade carefully open each of these holes When you are finished we suggest using a small heat sealing type iron to reheat and firmly attach the covering around the holes just made 2 From the kit contents locate the 5mm 7 32 dia x 150mm 5 3 4 hardwood dowel rear wing positioning dowel Insert the dowel into the fuselage side directly beneath the plywood servo mounting tray on the inside of t...

Page 7: ... hobby knife or use a technique that works well for us Use a cigarette lighter or butane torch to heat up the end of a sharp metal pick or punch Press the hot end of the pick into the hole through the covering Doing this produces a perfect hole with sealed edges Remember to open up the holes on both sides of the stab and fin 5 The elevators are now joined using the elevator joiner wire Use 5 minut...

Page 8: ...xcess glue using alcohol 8 To be able to fit and hinge the elevators to the stabilizer the tailpost material must be cut away allowing the elevator joiner wire to fit against the stabilizer A hole has been drilled through the tailpost at this location Use a razor saw to open up this slot 9 The elevators are now hinged to the stabilizer Use the same hinging method described earlier in Step 5 of the...

Page 9: ...tem As shown the two longer wires are the upper brace wires and the two shorter ones are the lower brace wires The three PM2 x 12mm bolts and nuts are used to secure the braces to the two outer holes on each side of the stab and the single upper hole in the fin The 2 56 x 3 8 bolt is used to pass through the two bottom brace ends into the 2 56 blind nut already installed in the fuselage The molded...

Page 10: ...t out in the wheel pant slot Thread a second M4 hex nut onto the bolt up to the first hex nut Use an adjustable wrench to tighten this nut firmly to the first nut This is the basic wheel axle assembly 2 The fiberglass wheel pants can now be mounted to the landing gear Note that the wheel pants have been molded with a recess on the inner face that accepts the thickness of the aluminum landing gear ...

Page 11: ...e a little thread locking compound on each bolt and do not over tighten them The landing gear wheel pant assembly is now complete and ready to mount Save the Allen wrench for your tool kit The completed landing gear assembly is now mounted in place to the bottom of the fuselage using the three PM4 x 16mm bolts provided in the kit Use a little thread locking compound on these bolts to keep them sec...

Page 12: ...g resin If you decide to do this use a brush to apply the resin and be sure to brush the resin up to the covering edges 2 Apply a little thread locking compound to the four PM4 x 22mm bolts and install the two motor mount arms to the firewall do not tighten in place yet As mentioned earlier these arms can be positioned to adjust to the width of the engine s crankcase Place your engine on the motor...

Page 13: ...f the receiver and the other on the top Use a tie wrap through the two half round cut outs to secure the receiver to the tray Remember that the aileron servo leads will be coming into each fuselage side at the receiver location Final placement of the receiver and its servo receptacles should be made with this in mind Use the remaining piece of foam rubber to pad your airborne battery pack Wrap the...

Page 14: ...C links in place to the nylon horns 5 The pushrod connections are now made for the rudder and elevator servos Begin by neutralizing the rudder in place to the fin with tape or a pair of scrap balsa sticks about 8 long with rubber bands holding them together at each end Slip this fixture over the top of the fin and rudder Turn the radio system on and center the rudder and elevator servos with the t...

Page 15: ... a short length of fuel tubing medium silicon tubing is fine for 2 56 hardware to keep the links firmly in place to each control horn and servo arm This common safety practice has saved a lot of models Last make sure that you have secured the servo arms to each servo with the retaining screws WING RETENTION The wing system used on this airplane is simple straight forward and very convenient It is ...

Page 16: ... location say 30 or so This setting would allow the airplane to make incredibly slow landings or even to hover or appear to fly backwards in certain wind conditions Double check the entire radio installation and remedy any problems now Make sure that all five servos have their output arm screws back in place and tightened We also suggest that you periodically check the available voltage in your re...

Page 17: ...hin minutes try out the HIGH RATE settings and begin to enjoy this model as it was meant to be This thing will perform maneuvers that are not even named yet Try some spins both upright and inverted and be sure to throw in some snap rolls You ll really appreciate how quickly it corrects itself when you let go of the sticks Before landing we always suggest that you check out the airplane s stall cha...

Page 18: ...r model size or full size are not toys Because of the speeds that airplanes must achieve in order to fly they are capable of causing serious bodily harm and property damage if they crash IT IS YOUR RESPONSIBILITY AND YOURS ALONE to assemble this model airplane correctly according to the plans and instructions to ground test the finished model before each flight to make sure it is completely airwor...

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