Bill Hempel 42% Extra 260 Page 26 User Manual Download | Manualshive

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26

Four locations are pre-cut in the fuselage for mounting the

switches. Install the receiver switches so that the leads can reach

the receiver and the receiver battery. Mount the ignition switch

toward the front part of the fuselage.

Place foam rubber under the batteries and receivers to protect them

from shock and vibration. Use hook and loop material to secure

the batteries and receivers.

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Summary of Contents for 42% Extra 260

Page 1: ...ge aircraft We strive to build high quality and great flying aircraft We have used our years of experience in the hobby to design and build aircraft that are competitive at the highest levels of aerobatic competitions and that will last for many flying seasons ...

Page 2: ...ll liability associated with the use of this product This product is sold as is and the purchaser accepts any and all responsibility for structural or mechanical failures Because of the stresses that are associated with aerobatic flight there is no warranty provided and bill hempel com cannot be held liable WARNING Radio Control Model aircraft are not toys If improperly used it can cause serious i...

Page 3: ...ol sanding drum Thread locker Silicone Adhesive Hobby Knife 3 8 Heat Shrink Tubing Heat Gun 30 Minute Epoxy Canopy Adhesive Masking Tape Rubbing Alcohol Paper Towels Additional Items Needed 150cc to 170cc twin cylinder engine Factory Mufflers Canister Mufflers or Tuned Pipes Propeller Engine manufacturer recommended Appropriate sized spinner bolt ...

Page 4: ... 1 Throttle servo 2 receiver battery packs 2300 mAH minimum 1 x ignition battery 1600 to 2600 mAH 2 or 3 Voltage Regulators if needed 3 Switches 2 for receiver and 1 for ignition Servo extensions required Ailerons 2 x 12 2 x 36 Elevators 2 x 48 Rudder 2 x 48 Throttle 18 Unpacking Carefully remove the aircraft from the boxes and inspect for any damage If you have any damage it must be reported to t...

Page 5: ...g your covering iron with a soft sock gently apply pressure and rub in the covering If any bubbles occur your iron may be to hot Reduce heat and work slowly You should be able to just see the wood grain under the covering when proper adhesion has occurred IMPORTANT Go over any and all seams and color overlaps with your iron to assure good adhesion of the covering to the wood This is especially imp...

Page 6: ...6 over shrinking Tightening and re shrinking the covering is now complete Getting Started Using a hobby knife or soldering iron carefully remove the covering from the areas shown below ...

Page 7: ...7 ...

Page 8: ...ass jar or shot glass will turn to liquid when heated with a heat gun Dip the hinge in the Vaseline and set it aside to dry Once the Vaseline has hardened in the hinge joint clean the hinge with rubbing alcohol and paper towels Make sure that there is no Vaseline on the gluing surface Sandpaper can be used to lightly scuff the hinges to provide for a better gluing surface After scuffing the hinges...

Page 9: ...he four hinges that have had the ends slightly shortened Two of the shortened hinges are installed in the horizontal stabilizer closest to the root This insures that the hinge doesn t interfere with the stab tube ...

Page 10: ... the elevator can be glued in place Masking tape is used to hold the control surface in place while the epoxy cures Paper Towels and rubbing alcohol can be used to clean up any excess epoxy Repeat this hinging process on the ailerons and rudder Servo Installation ...

Page 11: ...r servos each require a 48 servo extension The throttle servo requires an 18 servo extension Slide 3 8 heat shrink tubing over the servo connectors and shrink it with a heat gun Install the servos and secure them with the servo screws that are supplied with the servos or use 9 16 socket head servo screws Control Horn Pushrod Installation ...

Page 12: ...ns as shown above Use medium blue thread locker on the control horn bolts Because the aileron is thicker at the root than at the tip the outboard control horn arm should be mounted near the top of the treaded rod and the inboard ...

Page 13: ...p the servo travel the same and keeps the two servos from twisting the aileron Assemble the pushrods The pushrods are right hand thread on one end and reverse threaded on the other This allows for easy pushrod length adjustment Use medium blue thread locker on the servo screws ...

Page 14: ...14 Tail wheel Bracket Installation Place a flat washer on each screw and then apply thread locker to the screws Mount the carbon fiber tail wheel bracket on the fuselage ...

Page 15: ...15 Mount the rudder steering arm on the rudder with the supplied wood screws and the install the tail wheel springs as shown Landing Gear Installation ...

Page 16: ...landing gear hardware bag you will find four socket head cap screws and flat washers for mounting the landing gear The landing gear is installed with the gear swept slightly forward Landing Gear Cuff Installation ...

Page 17: ...as they come in the kit or for a more scale effect you can install some black rubber tubing on the cuffs Use clear silicon adhesive to glue the cuffs in place clamp the cuff in place until the adhesive has fully cured Axle and Wheel Installation ...

Page 18: ...18 Install the axles and wheels as shown Wheel Pant Installation ...

Page 19: ...sure that the wheels are centered in the wheel pant and that they don t rub on the edges of the wheel pant Engine Installation Tape the engine mounting template in place on the firewall Drill four holes for mounting the engine x 20 x 2 socket head cap screws and large flat washers were used to secure the engine ...

Page 20: ...material Place foam rubber under both the ignition unit and regulator Cut a slot on each side of the motor box for the spark plug wires to exit Place some plastic conduit over the spark plug wire to help prevent chaffing We mounted the ignition battery in the bottom of the motor box Place foam rubber under the battery and secure it with hook and loop material ...

Page 21: ...t been pre opened in the bottom of the motor box The location shown is for a Desert Aircraft DA 150 engine If you re using a different engine mount your engine in place on the firewall and then mark a throttle servo location that will work for your particular engine Attach an 18 servo extension to the throttle servo and mount the servo as shown ...

Page 22: ...22 Cowling Installation ...

Page 23: ...milar template can be made for marking the openings for the choke lever and a hole for making needle valve adjustments If a quieter exhaust system is needed the Extra is equipped with an exhaust tunnel in the fuselage that will allow mounting of canisters mufflers or tuned pipes The bottom half of the cowl is secured to the fuselage by two tabs that are built into the bottom of the firewall and on...

Page 24: ...d Fuel Dot Installation There is plenty of room in the Extra 260 for up to a 60 ounce fuel tank a 50 ounce tank is shown Follow the fuel tank manufactures instructions for assembling the fuel tank Spinner Installation ...

Page 25: ...Make sure to use the appropriate Personal Protective Equipment when cutting or sanding carbon fiber You will need to purchase the correct spinner bolt for your particular engine Use a propeller drill guide to drill the spinner s back plate for your engine Apply blue thread locker to the prop and spinner bolts Switch Receiver and Battery Installation ...

Page 26: ...witches so that the leads can reach the receiver and the receiver battery Mount the ignition switch toward the front part of the fuselage Place foam rubber under the batteries and receivers to protect them from shock and vibration Use hook and loop material to secure the batteries and receivers ...

Page 27: ...e onto the carbon fiber tail tube two socket head cap screws and flat washers secure them in place Apply blue thread locker to the screws The wings slide onto a carbon fiber wing tube each wing panel is secured from inside the fuselage with two nylon wing bolts ...

Page 28: ...lapping on both sides Included with the kit are screws to hold the canopy in place If you choose to glue the canopy in place mark the edges of the canopy on the hatch Carefully remove a 1 4 3 8 wide strip of covering where the canopy attaches to the hatch Then use canopy glue to attach the canopy to the hatch Use masking tape to hold the canopy in place until the adhesive is fully cured The hatch ...

Page 29: ...e airplane on a flat surface Make sure all control surfaces are centered at neutral Measure the control throws using a degree meter or a straight edge measurements are made at the trailing edge of the control surface We used 35 expo on all control surfaces both on low and high rates Remember that Futaba radios use a negative number on expo and JR Specktrum radios use a positive number Adjust the a...

Page 30: ...ke sure that the spinner and propeller have been balanced The engine should be properly adjusted and running smoothly and should have a good throttle transition If the engine isn t running properly don t try flying the plane Perform a range check with the engine running Make sure the range check meets or exceeds the radio manufactures recommendations Set the Fail Safe on the radio and the throttle...

Page 31: ...re they are fully charged and re check the batteries after each flight Make sure that you have used thread locker on all nuts and bolts We recommend using low rates for the initial test flights Have Fun Enjoy your aircraft and fly safe ...

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