Extreme Flight LASER EXP ARF Instruction Manual Download Page 1

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74”

LASER EXP

ARF

Instruction Manual

Summary of Contents for LASER EXP ARF

Page 2: ...nautics in order to be properly insured and operate your model at AMA sanctioned flying fields only If you are not willing to accept ALL liability for the use of this product please return it to the place of purchase immediately Extreme Flight RC Ltd guarantees this kit to be free of defects in materials and workmanship for a period of 30 DAYS from the date of purchase All warranty claims must be ...

Page 3: ... fiber landing gear titanium pushrods and a carbon fiber tail wheel assembly all ensuring the lightest most high performance aircraft possible You will notice there is a box built into the bottom of the gas version of the LASER EXP fuselage This is a pipe tunnel and will accommodate most canister mufflers and tuned pipes sold for the current makes of 30 40cc gas engines Like all of the EXP series ...

Page 4: ... and sandpaper 5 x METAL GEARED servos with a minimum of 300 oz in of torque Aluminum Servo Arms 2 x 1 5 single arms 2 x 2 single arms and 1 x 3 5 double arm 2 x 6 Servos Extensions 2 x 12 Servo Extensions 2 x 24 Servo Extensions 76mm Spinner Gas Version 30cc 40cc gas engine 20x8 21x8 prop Electric Version 2500 3500 Watt Brushless Power System 80 to 120 amp HV ESC 8S to 12S Lithium Polymer batteri...

Page 5: ...urfaces An effective method to restore these imperfections to original condition is to use a very fine tipped hypodermic needle and inject a drop of water under the covering material and into the ding in the wood Apply heat to the area with a sealing iron and the imperfection will disappear Deeper marks may require that this process be repeated a couple of times to achieve the desired result but y...

Page 6: ...e a sharp 11 blade or soldering iron to remove the covering over the 2 slots for the elevator control horns on the bottom of the elevator surface 2 Insert the 2 control horns into the base plate and trial fit the horns into the slot making sure they seat properly against the base and elevator surface If necessary sand the bottom of horns to ensure proper fit in the elevators 6 ...

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 using a zip tie to ensure the slots are filled will epoxy 8 Apply a generous amount of epoxy to the bottom of the G 10 control horns and base plate 9 ...

Page 10: ...e to dry Repeat for the other elevator half 10 Next remove the pin hinges from the horizontal stabs Take note that one pin is shorter than the others this is to allow for clearance of the stab tube Note There are several methods and adhesives that can be used for installing the hinges We will describe the way we do it as this method has proven itself over many years of model building 10 ...

Page 11: ...to the knuckle of the hinge This will keep the epoxy from getting into the hinge which can cause it to bind 12 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 with epoxy 11 ...

Page 12: ...es with epoxy and push the hinges into the holes of the horizontal stab Remember the short hinges go in the hole closest to the fuse 14 Make sure the hinge pins are centered in the hinge gap and that they pivot 90 degrees to the stab 12 ...

Page 13: ...her side of the hinges as well as the hinge holes in the elevator with epoxy and install the elevator into the stab Don t forget to apply epoxy in the hinge holes on the stab before installing the stab to the elevator 13 ...

Page 14: ...e 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 Note Now is a good time to seal the hinge gap with a strip of Ultracote or Blenderm tape 14 ...

Page 15: ...s from the wing hardware package Following the same procedure as outlined with the elevator stabs install the control horns and hinges for both wings Each wing has 5 hinges so it s best to install the hinges in the aileron first then mix a second batch of epoxy to install the aileron hinges to the wing 15 ...

Page 16: ... 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 Use caution and avoid excessive heat as you may cause the Ultracote to shrink too much and lift at the seams 16 ...

Page 17: ...minutes to apply some CA to the joints of the servo rails and the ribs 19 Attach a 6 servo extension to your servo and secure with thread or heat shrink tubing Attach the recommended 1 50 SWB Servo arm and electronically center the servo arm Use the manufacturer supplied mounting hardware to install the servo with the output shaft toward the trailing edge of the wing 17 ...

Page 18: ...ied 3mm bolts washers and nylon insert locknuts as shown in the picture below As always use blue Loctite on ALL bolts 21 Use a soldering iron or a sharp 11 blade to remove the covering from the blind nuts on the wing tip This is for attaching the SFG s Note Repeat this process for the other wing Clean the wings with Windex and set them aside 18 ...

Page 19: ...arp 11 blade to remove the covering from the 2 pre cut slots in the rudder 23 Temporarily install the control horns and base plates without epoxy Ensure that the control horns center in the rudder properly Mark the side of the control horn with a felt tipped marker as a reference point for preparing the control horns for installation 19 ...

Page 20: ...between the reference marks made in the previous steps Also scuff one side of both base plates as well 25 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: ...position Clean the excess epoxy from the horns and then install the base plates 27 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 21 ...

Page 22: ... 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 29 Next install the rudder hinges using the same procedure as with the Ailerons and Elevators 22 ...

Page 23: ... tailwheel onto the wire and secure with the included wheel collars 31 Position the tailwheel assembly on the rear bottom of the fuselage making sure the tailwheel wire is aligned with the rudder hinge line Use some blue painters tape to hold the assembly in place while you drill 3 holes with a 1 16 drill bit Apply a few drops of thin CA to the holes and secure the assembly to the bottom of the fu...

Page 24: ...dder arm and electrically center the servo 33 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 Loop the cable back through the crimp tube a second time and crimp with side cutters 24 ...

Page 25: ...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 Repeat for the other side Note When routing the pull pull cables through the fuse they should cross like an X Also the tension on the wires should taut but not overly tightened 25 ...

Page 26: ... 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 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 26 ...

Page 27: ...36 Prepare the landing gear fairings by slitting the supplied black neoprene tubing length wise with a sharp hobby knife Push the tubing onto the rim of the fairing and secure with CA 27 ...

Page 28: ...e blue painters tape at the bottom of the fairing to mark the location on the gear Lightly sand the gear leg where the fairing will attach 38 Secure the fairing to the gear with Goop silicon glue and use additional blue painters tape to hold the fairing in place while the glue dries 28 ...

Page 29: ... using denatured alcohol 40 Locate the 2 axles 2 locking nuts 2 washers 2 wheels 4 wheel collars and 2 wheel pants Place the threaded portion of the axle through the hole in the landing gear place a washer onto the axle and secure the axle with a locking nut Repeat this process for the second wheel axle 29 ...

Page 30: ...nd wheel collar Make sure the wheel is centered in the wheel pant Repeat this process for the remaining wheel 42 Slide the wheel pant into position over the axle When satisfied with the position of the wheel pant drill 1 hole through the plywood plate that is glued inside the pant at the location of the hole in the landing gear 30 ...

Page 31: ...below Apply a small amount of CA to hold the blind nut in place until the wheel pant is secured to the gear 44 Secure the pant in position with the provided 3mm bolt and blind nut As always use blue Loctite on ALL bolts Repeat this process for the remaining wheel pant 31 ...

Page 32: ...lts Insert the bolts through a washer and the mounting tabs and into the corresponding blind nuts already installed in the fuselage Apply blue Loctite to these bolts 46 Install the recommend SWB servo arms to the elevator servos and electronically center each servo For this aircraft we use 2 arms 32 ...

Page 33: ...put shaft toward the rear of the fuselage as shown in the picture below 48 Thread a ball link on each end of the steel pushrod and secure to the servo arm and elevator control horns with 2 x 3mm bolts washers and nylon insert locknut as shown in the picture below Be sure to use a drop of blue Loctite on all bolts Repeat the process for the other elevator 33 ...

Page 34: ...r line to accommodate for the motor offset due to the built in right thrust angle in the motor box Note this same procedure can be used for mounting a gas engine 50 The distance from the front face of the motor box to the motor drive washer is 6 3 8 Use standoffs in conjunction with your motor to achieve this length To ensure proper cooling the recommended location for mounting the ESC is on the b...

Page 35: ...Desert Aircraft DA 35 with Pitts muffler mounted on the Laser 51 Attach the top of the motor box using the 4 supplied wood screws 35 ...

Page 36: ...ne tipped marker to mark the location of the pre drilled holes in the center of each mounting tab 53 Roll the tape back and slide the cowl into position Install the spinner onto the motor shaft for reference and once satisfied with the cowl position roll the tape back into place and secure the cowl Use a 1 8 drill bit to drill a hole at the location of the dot on each piece of tape 36 ...

Page 37: ...nd secure the cowl with 4 x 3mm bolts and washers as shown in the picture below Be sure to use a drop of blue Loctite on all bolts This photo shows how we have cut the bottom of the cowl for engine and muffler clearance 37 ...

Page 38: ...to remove the covering on the bottom of the fuse just behind the turtle deck This will allow an escape for the incoming air that cools the batteries 56 The wings are retained by inserting the 4MM Bolt and Washer through the wing tab as shown in the picture below 38 ...

Page 39: ... with your Laser EXP is a set of side force generators SFGs They are secured to each wingtip by inserting 2 x 3mm thumb bolts through the SFG a clear plastic spacer and into pre installed blind nuts in each wing tip 39 ...

Page 40: ...tail heavy There is no need to have the Laser excessively tail heavy to perform 3D maneuvers At this time you will also want to balance your plane laterally Add a small amount of weight to the wingtip to achieve proper lateral balance Control surface throws I highly recommend that you purchase a throw meter that measure in degrees There are several units available commercially These units are a gr...

Page 41: ...lable in the automotive section of most Wal Marts K marts Sears Targets etc People often ask me at trade shows how I get the planes to look so shiny this is my secret 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 74 inch Laser EXP ARF I hope you enjoy assembling and flying yours as much as I have mine See you at t...

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