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Extreme Flight RC 83 inch MXS ARF Instruction Manual

Extreme flight rc 83 inch mxs arf model aircraft
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83" MXS ARF

Instruction Manual

Copyright 2012 Extreme Flight RC
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Summary of Contents for Extreme Flight RC 83 inch MXS ARF

  • Page 1: Instruction Manual

      83" MXS ARF Instruction Manual Copyright 2012 Extreme Flight RC 1   ...
  • Page 2 THIS IS NOT A TOY! Serious injury, destruction of property, or even death may result from the misuse of this product. Extreme Flight RC is providing you, the consumer, with a very high quality model aircraft component kit, from which you, the consumer, will assemble a flying model.
  • Page 3 30-40cc gas engines. The performance ability of the Extreme Flight RC MXS is phenomenal! This sleek, fast and agile airframe is completely unlimited in its ability to perform the full range of full stall high alpha maneuvers and aggressive gyroscopic tumbling maneuvers.
  • Page 4 Items needed for completion:  Masking tape.  Hobby knife with #11 blades.  Thin and medium CA. We highly recommend Mercury M5T thin and M100XF medium formulas as well as the Mercury glue tips.  30 minute epoxy. Mercury Adhesives Epoxies have worked very well for us. ...
  • Page 5 Tips for Success: 1. Before starting assembly, take a few minutes to read the entire instruction manual to familiarize yourself with the assembly process. 2. Please take a few minutes and go over all the seams on the aircraft with a covering iron on a medium heat setting.

  • Page 6: Let's Begin

    Let's begin! Elevator Assembly 1. Locate the horizontal stabilizer/elevator assemblies as well as the composite control horns and base plates from the elevator hardware package. Use a sharp #11 blade to make a cut in the covering over the 2 slots for the elevator control horns on the bottom of the elevator surface.
  • Page 7 3. Trace around the base plate with a felt tipped marker.  4. Remove the horn assembly and use a #11 blade to remove the covering from inside the ink line you traced around the control horn base. 7   ...
  • Page 8 5. Wipe away the ink line with a cotton cloth or paper towel soaked in denatured alcohol. 6. Use sandpaper to scuff the portion of the horns and base plate that will be inserted into the elevator. 8   ...
  • Page 9 7. Apply 30 minute epoxy to the elevator slots, G-10 horns and base plate bottom. Use a zip tie to ensure the slots are filled will epoxy. 9   ...
  • Page 10 8. Reinsert the assembly into the elevator and wipe away any excess epoxy with a cloth and denatured alcohol. Place a 3mm bolt through the horns to help insure proper alignment and set aside to dry. Repeat for the other elevator half. 9.
  • Page 11 10. Use a cotton swab to apply petroleum jelly ONLY to the knuckle of the hinge. This will keep the epoxy from getting into the hinge which can cause it to bind. 11. Mix a generous batch of 30 minute epoxy. Use a zip tie or an old pushrod to thoroughly coat and fill the hinge holes on the stab AND elevator with epoxy.
  • Page 12 12. Next, coat one side of all 3 hinges with epoxy and push the hinges into the holes of the elevator. Remember the short hinge goes in the hole closest to the fuse. 12   ...
  • Page 13 13. Now coat the other side of the hinges with epoxy and install the elevator into the stab, making sure the hinge pins are centered in the hinge gap. Don’t forget to apply epoxy in the hinge holes on the stab before installing the stab to the elevator. 13 ...
  • Page 14 14. Use denatured alcohol and a cloth to remove all excess epoxy, especially on the hinge pin. Make sure you have full deflection in both directions – once satisfied with the results, set the surface aside to dry. After the hinges have dried thoroughly, pull on them to make sure they are properly installed.

  • Page 15: Wing Assembly

    Wing Assembly 15. Locate the wing/aileron assemblies as well as the composite control horns and base plates from the elevator hardware package. Following the same procedure as outlined with the elevator / stabs, install the control horns and hinges for both wings.
  • Page 16 Note: Before moving to the next step – it would be a good time to seal the hinge gap with a strip of Ultracote or Blenderm tape. Be sure to fully deflect the control surface when sealing the gap to allow for full deflection once the gap is sealed. Also, take a few minutes to go over the wings with a trim iron on a medium heat to seal all the trim seams and remove any wrinkles in the covering.
  • Page 17 16. Locate the aileron servo mount and remove the covering from this area. Use a sealing iron to seal the edges of the covering to the sides of the servo opening. Take a few minutes to apply some CA to the joints of the servo rails and the ribs. 17.
  • Page 18 18. Use the recommend 1.50” SWB servo arms and attach 2 ball links onto the titanium turnbuckle pushrod. Secure the pushrod to the control horns and servo arm using the supplied 3mm bolts, washers, and nylon insert locknuts as shown in the picture below.

  • Page 19: Rudder And Tailwheel Assembly

    Rudder and Tailwheel Assembly 20. Locate the rudder, the rudder control horns and the 2 slotted base plates. As with the elevators, use a sharp #11 blade to remove the covering from the 2 pre-cut slots in the rudder. 21. Before applying epoxy, measure the control horns to ensure they are centered properly and mark their location with a felt tipped marker.
  • Page 20 22. Scuff the middle of the horns that will go into the rudder as well as the base plates. 23. Mix a generous batch of epoxy and completely fill the two slots as well as the areas on control horns and base plate that will glue into the rudder. 20 ...
  • Page 21 24. Slide the rudder horns back into their proper position. Clean the excess epoxy from the horns, and then install the base plates. 25. Carefully check alignment to insure proper positioning. Remove any excess epoxy from the rudder, re-check the alignment one more time and set the assembly aside to dry.
  • Page 22 26. Locate a 2mm ball link from the hardware bag. Measure 3” back from the leading edge of the rudder and drill a hole to accept the shank on the ball link. Scuff the shaft of the ball link and glue it in the hole as shown in the picture below. 27.
  • Page 23 28. Disassemble the tailwheel assembly and use a rotary tool or a small file to create a flat spot on the tailwheel wire for the set screws in the aluminum cap to seat against. Reassemble the unit and apply Loctite to the threads on the setscrews. Slide the tailwheel onto the wire and secure with the included wheel collars.

  • Page 24: Fuselage Assembly

    Fuselage Assembly 30. Locate the Carbon Fiber main landing gear, 4 x 4mm bolts, lock nuts and washers. Place the gear onto the landing gear plate and align the 4 holes. Use a long T-Handle allen wrench and insert the 4 x 4mm bolts from inside the fuse. Attach the 4 washers and lock nuts to each bolt and tighten.
  • Page 25 31. Locate the 2 axles, 2 locking nuts, 2 wheels, 4 wheel collars and 2 wheel pants. Place one wheel collar on the axel then slide the wheel onto the axel and secure the well with the second wheel collar. Place the threaded portion of the axle through the hole in the landing gear and attach the lock nut and washer onto the axle.
  • Page 26 33. Next, install the motor/engine. The center and offset marks have been scribed into the front of the firewall with a laser. Use a mounting template and align with the marks on the firewall. Be sure to use the offset line to the right of the vertical center line to accommodate for the motor offset due to the built in right thrust angle in the motor box.
  • Page 27 35. Next, remove the covering for the elevator servos as well as the openings for the pull-pull rudder cables. By removing the covering for the servo holes first, you can easily see where the nylon tubes for the pull-pull wires are installed on each side of the fuse.
  • Page 28 37. Install the rudder servo using the supplied hardware with the output shaft toward the rear of the plane. Also, install the recommended SWB 4” offset rudder arm. 38. Next, install the pull-pull rudder cables. Assemble one end of the linkage by inserting the pull-pull cable into one of the aluminum crimp tube, through the hole in the brass pull-pull fitting and back through the crimp tube.
  • Page 29 39. Insert the bare end of the cable into the slot in the rear of the fuselage and feed it forward into the canopy area. Make the same type of linkage as done previously. Electronically center the servo and secure the linkage at both ends with a 3mm bolt and nylon insert lock nut.
  • Page 30 40. Slide both stab/elevator assemblies onto the carbon fiber mounting tube and secure with 2 3mm bolts. Insert the bolts through a washer and the mounting tabs and into the corresponding blind nuts already installed in the fuselage. Use blue Loctite on all bolts!!! 41.
  • Page 31 Mounting the cowl 42. The MXS cowl mounts using 4 bolts through the side of the cowl and into blind nuts mounted in the tabs in the fuselage sides. You will probably need to cut an opening in the bottom of the cowl for the engine cylinder to clear before being able to properly align and mount the cowl.
  • Page 32 45. Secure the cowl using 4 3mm bolts and washers. 46. The wings are retained by inserting the 1/4x20 nylon bolts through the holes in the fuselage just behind the wing tube and into the pre-installed blind nuts in the root rib of the wing.

  • Page 33: Control Surface Throws

    Set-up and trimming The center of gravity range for the 83 inch MXS begins at 5.25” from the leading edge of the wing measured at the root and extends back to 6.25”. CG is determined with the MXS in the upright position. One of the best ways to dial in the proper CG for your aircraft is the 45 degree line test.
  • Page 34 You may wish to apply all of your graphics before applying the coat of wax. Thanks again for your purchase of the Extreme Flight RC 83 inch MXS ARF. I hope you enjoy assembling and flying yours as much as I have mine.