SIG SOMETHIN EXTRA ARF Assembly Manual

INTRODUCTION: Congratulations on your purchase of the fantastic new SIG SOMETHIN' EXTRA® ARF kit. SIG's kit version of this unique design has proven to be one of the most popular sport aerobatic R/C models ever produced. Reasons for this popularity with modelers are many but certainly one of the most important has been the consistently outstanding flying characteristics of the design. This new ARF version of the SOM ...

moisture, dimensionally "shrinking" in the process. In turn, this may cause some wrinkles. However, wrinkles are easy to remove by just using a hobby type heat iron. We suggest covering the iron's shoe with a thin cotton cloth, such as an old T-shirt, to prevent scratching the film. The iron should be set to 220OF - 250OF (104OC - 121OC). Use the heated iron to lightly shrink the material - ...

❑ 4 each M4 Hex Nuts - Main Wheel Axle Attachment ❑ 10 each M4 Washers - Main Wheel Axles (6), Motor Mount Bolts (4) ❑ 2 each 4mm Wheel Collars With Set Screws - Main Wheel Attachment WIRE PARTS: ❑ 1 each Pre-Bent 3mm Elevator Joiner Wire ❑ 1 each Pre-Bent 2.0 mm Tail Wheel Wire ❑ 2 each 1.8mm Dia. x 19.7cm Bright Wire, Threaded Both Ends - Upper Tail Supports ❑ 2 each 1.8mm Dia. x ...

❑ 2) Inside the aileron servo bay you will see the plywood servo mount. You will also see a small rectangle of plywood with thin line tied to it. This line leads through the wing and exits at the root rib, where you will see the line attached to another plywood piece taped to the rib. This line will be used to pull the aileron servo lead through the inside of the wing, exiting at the root rib. Before installing the aileron se ...

over and apply four drops of CA glue to each edge of the hinges. Remove the tape, returning the aileron to its centered position. Because it takes a little time for the CA to fully wick its way through the entire surface of the hinge and surrounding wood, allow at least 10 minutes before flexing the aileron. Any spilled glue can be easily removed with SIG Debonder. After sufficient time has ...

them about 1/2" away from the surface of the panel. Wipe off any excess glue and allow the epoxy to set. FUSELAGE AND TAIL GROUP: The fuselage is provided with the removable Canopy Hatch in place. To remove this hatch, simply lift it up at the front and slide it forward, disengaging the locating dowel pin from the rear plywood former. ❑ 1) The fuselage has been built and covered with sever ...

❑ 3) The fuselage is now prepared to receive the horizontal stabilizer (stab) and the vertical fin. At the top rear of the fuselage you will see a strip of uncovered balsa. This is the fin spacer block and it is now removed. The fuselage also has a horizontal stab spacer block built into it and this also must be removed. Use a sharp #11 blade and your hobby knife to cut the covering away from the stab slot ...

place. This provides a good visual aid when checking the stab for level and also for being square to the wings in the top view. Apply glue to the bottom center of the stab and its center leading edge, where it contacts the fuselage former. Slip the stab in place, being careful to align it squarely and that the slot at the rear of the stab is aligned with the fuselage sides. With the fuselage ...

at the bottom of the rudder. Insert the upright tailwheel wire stub into the hole just drilled. Slip the metal tailwheel bracket over the wire onto the bottom front of the rudder. Mark the location of the hole in the bracket onto one side of the rudder. Remove the bracket and use a 3/32" dia. bit to drill through the rudder at the mark just made. Place the tailwheel wire back onto the r ...

on the floor because they are really hard to find!). Place the canopy onto the canopy hatch with its rear edge lined up with the rear edge of the angled former. Carefully center the canopy and use a few pieces of masking tape to hold it in this position. Use a pin through each washer's center to poke a small hole at each location. Remove the tape and the canopy. Press the silicon washers onto ...

9/64" dia. bit. Re-drill the two holes in each wheel pant with the 9/64" bit. ❑ 3) From the inside of the wheel pant, press two 4-40 blind mounting nuts into the wheel pant mounting holes just drilled. Place the wheel pant back onto the aluminum landing gear. Thread two 4-40 x 3/8" slotted head bolts through the landing gear and wheel pant and into the blind mounting nuts. Use a screwdriver ...

This instruction sequence will install both the fuel tank and the engine. Therefore, you will need the following: Engine (with muffler removed) - not included Assembled Fuel Tank Motor Mount Assembly (4-piece)* 4 - PM4 x 22mm Bolts 4 - M4 Washers 2 - Black Foam Rubber Pads - 10mm (7/16") x 80mm (3-1/8") x 200mm (7-7/8") 2 - 9" Lengths of Silicon Fuel Tubing - not included 4 - 6-32 x 1" Socket Head Bolts - not included 4 - 6-32 ...

installation of the rest of the radio system only consists of dropping in the rudder, elevator and throttle servos, the receiver, and the switch. The pushrod connections to these servos will be made shortly. Install the rubber grommets and eyelets supplied with your radio system onto the rudder, elevator, and throttle servos. Install all three servos in place into the fuselage servo tray, agai ...

the rear, the rudder pushrod exit is on the left side. Use a hobby knife to cut the base away from the nylon control horn. Attach the control horn to the nylon R/C link. Slip the unprepared end of the nylon control tube into the pushrod exit at the rear of the fuselage on the left side. Push the rod all the way into the radio compartment. Hold the nylon control horn in place against the rud ...

servo is traveling in the right direction for low and high throttle. Set the throttle stick to full low throttle, with the trim lever centered. Push or pull the throttle cable to close the carburetor on the engine. Connect the remaining solder link to the throttle servo output arm. Use a marker pen to mark the cable for cutting, with sufficient length to fit into the solder links' tube end for t ...

HIGH RATE TRAVEL ELEVATORS: 1-1/4” UP - 1-1/4” DOWN 1-3/4" UP - 1-3/4" DOWN AILERONS: 1” UP - 1” DOWN 1-1/2” UP - 1-1/2” DOWN RUDDER: 1-7/8” LEFT - 1-7/8” RIGHT 2-1/4” LEFT - 2-1/4” RIGHT THROTTLE: FULL RANGE OF TRAVEL NOTE: These measurements were taken as follows: Elevator travel measured at the widest inboard trailing edge Aileron travel measured at the inboard trailing edge Rudder travel measured at the wides ...

tail-heavy, the battery pack can be moved forward a little. In the unlikely event that moving the battery pack will not correct these conditions, then stick-on lead weights may be needed. These are available from your local hobby retailer. Make sure that any weights you use are very securely attached to the model. Last, we also suggest that you balance your model laterally. To do this, use l ...

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 connec ...