SIG Rascal 72 EG Assembly Manual
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SIG Rascal 72 EG Assembly Manual

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SIG MFG. CO., INC. PO Box 520 Montezuma, IA 50171-0520
www.sigmfg.com

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Summary of Contents for SIG Rascal 72 EG

  • Page 1 SIG MFG. CO., INC. PO Box 520 Montezuma, IA 50171-0520 www.sigmfg.com...
  • Page 2 R/C airplane! Specs: case diameter: 35mm case length: 54mm Assembly of the RASCAL 72 EG ARF is fast and simple when stator diameter: 28mm following the detailed instructions in this manual. A low parts magnet length: 28mm count and professional engineering ensure quick and easy as- weight: 197g (6.9 oz.)
  • Page 3 Control Horns, Etc. materials available: ❑ (4) Nylon Control Horns; for ail(2); elev(1); rud(1) A selection of glues - SIG Thin, Medium, & Thick CA Glue ❑ (8) M2 x 20mm Mounting Bolts; for control horns CA Accelerator, CA Debonder ❑...

  • Page 4: Covering Material

    ❑ (8) Metal R/C Links, for ail(2), elev(2), rud(2), throttle(2) We suggest using a model airplane covering iron for this process. ❑ (6) M2 x 22mm Threaded Studs Cover the iron's shoe with a thin cotton cloth, such as an old t- shirt, to prevent scratching the covering as you work.

  • Page 5: Wing Assembly

    ❑ 2) First we will mount the aileron servos onto the molded plastic NOTE: In this manual, any references to right or left, refer to your right or left as if you were seated in the cockpit of the airplane. Aileron Servo Hatches.
  • Page 6 ❑ 3) Next we install the servo wires inside the wing panels. ❑ 5) From the kit contents locate two Nylon Control Horns, four a) Plug a 12”-24" long servo extension chord onto the end of M2 x 20mm Mounting Bolts and two wire Aileron Pushrods the aileron servo wire.

  • Page 7: Glow Engine Installation

    Then hold the base of the control horn down flat against the aileron. Ideally we want the base of the control The basic design of the RASCAL 72 EG is intended for mounting horn to be right up against the front edge of the aileron, which your glow engine inverted in the nose.
  • Page 8 accommodate any standard glow engine in the specified size tighten all four mounting bolts, securing the engine mounts on the range. Drill the four mounting holes with a 9/64” or 5/32" drill bit. firewall. ❑ 5) Slide the engine forward or aft on the engine mounts until the front of the engine's thrust washer is 4-1/2"...
  • Page 9 45 . Do not to put under the surface of the cowling, using a SIG #SIGSH759 Fueling a kink in the aluminum tube. Valve Bracket (not supplied). Make a 5/16” dia. hole in the cowl- ing, directly over the fuel valve, to allow the fueling probe to be in- serted into the valve.
  • Page 10 ❑ 8) Apply a generous bead of silicone sealer around the neck method is to "sneak up" on these openings, continually trial fitting the cowling over the engine until it finally fits properly. Once the of the tank (regular household bathroom type silicone sealer, opening is big enough for you to slip it over the engine and place available at most hardware stores, is recommended).

  • Page 11: Electric Motor Installation

    ❑ 5) Finish the engine end of the throttle pushrod as follows: a) Turn on your radio system and move the transmitter throttle stick to full high throttle position. b) Clip an R/C link and threaded stud into the bottom hole of the carburetor throttle arm.
  • Page 12 ❑ 3) Additional holes are needed in the firewall to allow air to flow back inside the fuselage to cool the battery and the ESC in flight. We recommend drilling three new 3/8” dia. holes in the lower part of the firewall, as shown in the photo. These three new holes, in addition to the laser-cut hole that is already in the firewall, should provide enough cooling air flow to keep the battery pack and ESC cool in flight.
  • Page 13 b) Insert your ESC up inside the nose of the airplane, in the air flowing into the front of the cowling and then out the back. This area above the built-in plywood battery tray. air flow keeps your motor running cool. Previously in Step 3 of c) Pass the motor leads of the ESC through the firewall and this section we made 3 additional holes in the firewall to allow the connect the leads to the motor.

  • Page 14: Attach The Tail Surfaces

    Also make sure you have plenty of exit area for the air to flow out in both the top and front views before the glue dries. Use a paper of the cowling. In any fully cowled installation (glow or electric), it towel and rubbing alcohol to wipe off any excess glue that oozes is critical that you have slightly more exit area than incoming area.

  • Page 15: Landing Gear

    simply deflect the rudder to the maximum amount of travel needed. This will automatically set the proper hinge gap! Keep ❑ 2) Install the two coil steering springs between the steering arm in mind that for best control response the gap should be kept as small as possible, but big enough to allow full movement of the on the bottom of the rudder and the steering arm on the leaf- control surface.

  • Page 16: Radio Installation

    a little “play” to allow the wheel to rotate freely. RADIO INSTALLATION b) Next put two flat metal washers on the axle, up against the lock nut. These will serve as spacers to get the wheel in the cen- The aileron servos and the throttle servo (glow only) are already ter of the wheel pant.
  • Page 17 Locate the following parts from the kit contents: h) Turn your radio system back on and check the neutral posi- q (2) 1/8" dia. x 25-1/2" Nylon Inner Pushrod Tubes tion of the elevator. Adjust one or both of the R/C links as needed q (4) Metal R/C Links to get it in neutral position.

  • Page 18: Install Side Windows

    CONGRATULATIONS! Your RASCAL 72 EG is completely assembled. However, it is NOT ready for flight! There are a few very critical pre-flight tasks we must perform before flying. These are extremely important and should be approached with patience and care.
  • Page 19 Inverted flight is easy, requiring surprisingly little down elevator With its large wing area and light weight, the RASCAL 72 EG for level flight. The RASCAL also performs nice inside and outside...

  • Page 20: Customer Service

    SIG MFG. CO., INC. is committed to your success in both assembling Because of the speeds that airplanes must achieve in order to fly, they and flying the RASCAL 72 EG ARF. Should you encounter any problem are capable of causing serious bodily harm and property damage if they building this kit or discover any missing or damaged parts, please feel crash.

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