Extreme Flight 91" EXTRA 300EXP ARF Assembly Manual Download Page 12 | Manualshive

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7. Install the elevator servo inside the stab using the manufacturer supplied mounting hardware with the
output shaft toward the front of the stab. It will be easier to electronically center the servo and confirm
proper servo arm installation before screwing the servo into position, although you will still need to
remove the arm to install the servo. We recommend the SWB 2 inch servo arm.

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Summary of Contents for 91" EXTRA 300EXP ARF

Page 1: ...1 91 EXTRA 300EXP ARF Assembly Manual Copyright 2012 Extreme Flight RC ...

Page 2: ...utics in order to be properly insured and to 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: ...ss be repeated a couple of times to achieve the desired result but you will be surprised at how well this technique works 4 DO NOT SKIMP ON SERVOS Your aircraft is equipped with very large control surfaces that deflect well over 45 degrees A lot of servo power is required to prevent flutter and to maintain the required deflection for maneuvers We absolutely recommend the use of METAL GEARED servos...

Page 4: ...wood spars in the forward D tube wing structure and 3 4 span shear webs the Extra s wing remains rigid and true during high G pushes and pulls and makes accurate roll and snap stops a breeze The fuselage is also constructed with carbon fiber square tube longerons and hardwood diagonal bracing which makes it very strong and resistant to twisting loads Large control surfaces provide the ultimate in ...

Page 5: ...in the covering over the 2 slots for the elevator control horns on the bottom of the elevator surface Double check to make sure you are cutting into the bottom of the elevator 2 Insert the 2 control horns into the base plate and trial fit the horns into their slots and make sure they seat properly against the base plate and elevator surface Trace around the base plate with a fine tipped felt marke...

Page 6: ...l Scuff the portion of the horns that will be inserted into the elevator with sandpaper Apply 30 minute epoxy to the slots and thoroughly coat the horns and base plate bottom Reinsert the assembly into the elevator and wipe away any excess epoxy with a paper towel and denatured alcohol Place a 3mm bolt through the horns to help insure proper alignment and set aside to dry Repeat for the other elev...

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Page 9: ...oroughly coat and fill the hinge hole with epoxy then coat the hinge with epoxy Push the hinge into its hole until the joint is about a from its final position and use a paper towel to remove the excess epoxy that has been forced from the hole Push the hinge the rest of the way in and make sure the hinge pin is centered in the hinge line Use some denatured alcohol and a paper towel to remove all e...

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Page 11: ... away any remaining lubricant from the surface with an alcohol soaked paper towel and seal the bottom of the hinge gap with a strip of Ultracote or Blenderm tape Be sure to fully deflect the control surface when applying the tape or Ultracote to allow full deflection once the gap is sealed Repeat this process for the other stab elevator assembly 6 Use your hobby knife to remove the covering from t...

Page 12: ...are with the output shaft toward the front of the stab It will be easier to electronically center the servo and confirm proper servo arm installation before screwing the servo into position although you will still need to remove the arm to install the servo We recommend the SWB 2 inch servo arm ...

Page 13: ... the supplied 3mm bolts nuts and washers as shown in the picture 9 Before you set aside the stabs take a moment with your covering iron and go over all of the seams with a medium heat setting paying special attention to the ends of thin trim stripes Clean the 2 elevator stab assemblies with Windex and set them aside ...

Page 14: ... 2 slots for the control horns and remove the covering from the slots with a sharp 11 blade Follow the same procedure as outlined previously for the elevator to install the control horns into the control surface and hinge the wing Repeat this procedure for the other wing ...

Page 15: ...ervo extension to the servo and secure with thread or heat shrink tubing Use the manufacturer supplied mounting hardware and install the servo with the output shaft toward the trailing edge of the wing Electronically center your servo Aileron servo arm length should be 1 75 2 inch arm pictured using the hole at 1 75 We use and recommend the SWB double lock aluminum arms Thread 2 ball links onto ea...

Page 16: ...e 2 slotted base plates Use a sharp 11 blade to remove the covering from the pre cut slots in the rudder Trial fit the 2 rudder horns through the slots in the base plate and into the slots in the rudder Trace around the base plate with a fine tip felt marker Remove the control horns and cut away the covering from the area where the base plate will mount as done previously with the aileron and elev...

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Page 18: ...ng the bolts and washers into the pre drilled holes in the aluminum gear mounts inside the fuselage with a long T handle wrench Secure with the 4mm nylon insert lock nuts 16 The landing gear fairings add a nice scale touch to the aircraft If you wish to use them slit the supplied black neoprene tubing length wise with a sharp hobby knife Push the tubing onto the rim of the fairing and secure with ...

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Page 20: ...re the axle with a locking nut 18 There is a pre cut slot in the wheel pant to allow it to fit over the axle You may need to open this slot with a rotary tool to allow it to slide into position over the axle When satisfied with the position of the wheel pants drill 2 holes through the plywood plate that is glued inside the pant at the location of the holes in the landing gear Secure the pant in po...

Page 21: ...ition and wipe away any excess epoxy with a paper towel and denatured alcohol 20 Assemble the tailwheel assembly as shown For best results file a flat spot at the location that each set screw will seat and use a drop of blue Loctite on each set screw Be sure to mount the threaded steel fitting on the top of the carbon fiber bracket and secure with the nylon insert lock nut on the bottom to allow p...

Page 22: ...22 21 Drill a hole in the bottom of the rudder to fit the shank of the included white 2mm ball link 3 5 inches from the rudder hinge line ...

Page 23: ...ool around the ball link shank for best results 23 Slide the tiller arm into the ball link and secure the tailwheel assembly to the rear bottom of the fuselage with the supplied 3mm bolts inserted through the carbon tailwheel assembly and into the pre installed blind nuts in the bottom of the fuselage ...

Page 24: ...e center line to compensate for the right thrust offset 25 The distance from the front face of the motor box to the motor drive washer is 6 32 inches this is the length of the DA 60 with a 1 inch mount We ve had great success with the Blazing Star mounts as well as the plywood spacers provided by DA Drill holes at the locations provided on the template and install the engine using the recommended ...

Page 25: ... in the photo is a KS 1060 mounted using a KS Comfort Mount This makes for a very simple pipe installation For the DA 60 you will need a 25mm drop wrap around header Included in your kit is a cover for the pipe tunnel Use a sharp hobby knife or soldering iron to remove the covering from the vent holes and install using wood screws ...

Page 26: ...26 27 Mount your rudder servo in the servo tray under the canopy using the manufacturer supplied mounting hardware For proper geometry use the SWB 4 offset rudder arm or a similar unit ...

Page 27: ...the aluminum crimp tubes through the hole in the brass pull pull fitting and back through the aluminum crimp tube Loop the cable back through the crimp tube a second time and crimp with side cutters 30 Insert the bare end of the cable into the slot in the rear of the fuselage and feed it forward into the canopy area and make up the same type of linkage as you did previously Electronically center y...

Page 28: ... a location pre cut for a throttle servo in the bottom of the motor box This will work for some engines but others may require a different mounting location Included in your kit is a laser cut servo mount that you can assemble and use to mount your throttle servo where it will work best You will need to fabricate your own throttle linkage to accommodate your choice of engine I used a short length ...

Page 29: ... to add some thick CA or Epoxy to the intersection of the cowl and plywood cowl ring Slide the cowl into position and secure with the 2 3mm bolts inserted into washers through the holes in the top of F1 and into the blind nuts installed in the cowl ring Be sure to use blue Loctite on all bolts 35 Install your choice of prop and spinner 4 Ultimate style spinner recommended 36 Install your switches ...

Page 30: ...39 The canopy is attached to the fuselage using 2 bolts with knurled white nylon knobs per side I highly recommend using a rubber washer under the head of each of the bolts to prevent them from backing out DO NOT USE LOCTITE ON THESE BOLTS AS THEY WILL BE IMPOSSIBLE TO REMOVE Check the bolts after each flight to make sure they are tight This completes the assembly of the 91 Extra 300 As a final st...

Page 31: ...ne for several hundred feet before it starts to slowly level off If the airplane immediately drops the nose and dives toward the ground it is nose heavy If it begins to climb inverted toward the gear it is tail heavy There is no need to have the Extra excessively tail heavy to perform 3D maneuvers Control surface throws I highly recommend that you purchase a throw meter that measures in degrees Th...

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