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17

Chapter 10 

Final Inspection and Pre-Flight 

 

Welcome to the final chapter prior to your maiden flight!  We hope you have enjoyed building your Extra. 

 
Let’s go over the airframe and perform a pre-flight to make sure everything is in order.   

 

 

Inspect the airframe for any visible damage and loose covering that may have occurred during the build. 

 

 

Inspect the main landing gear and tail wheel assembly.  Ensure all mounting hardware and collars are 

fastened properly. 

 

 

Inspect your motor installation and cowl to ensure all bolts are tight and the muffler is firmly mounted in 

place.  Check the motor and muffler for possible contact with the cowl.  Inspect ignition module and 

spark plug wire for proper mounting.  Check propeller and spinner to ensure they are both secure. 

 

 

Inspect the inside of the fuselage to ensure your batteries, switches, regulators (if equipped), fuel tank 

and lines are securely fastened.  Check nylon wing bolts to ensure they are in place and secured. 

 

 

Inspect all control surfaces and control surface hardware.  Gently tug on each surface to make sure the 

hinges are properly bonded.  Check the four 4/40 horizontal stabilizer fasteners and ensure they’re in 

place and secured. 

 

 

Check all servos for mounting screws.  Check servo arm mounting screws and inspect that the 4/40 links 

have been secured with lock nuts. 

 

 

Fill fuel tank and inspect for any leaks. 

 

 

Check your batteries in both your aircraft and radio to ensure they are fully charged 

 

 

Turn on radio to inspect all controls for binding, proper direction and throw while on high rates. 

 

 

Re-check CG.  It should not be behind the wing tube for initial flights. 

 

 

Secure the aircraft using a buddy or hold down and start the engine according to the manufacturer’s 

guidelines.  Don’t forget to set your throttle to idle prior to ignition. 

 

 

Perform a proper range check with the engine running, using your radio manufacturer’s instructions. 

 

 

Make sure you set low rates for your maiden takeoff and enjoy! 

 

This concludes your pre-flight checks.  After your maiden flight, repeat these steps to perform a post flight to 

ensure nothing has loosened.  It’s always a good habit to use a checklist like this one to go over your aircraft 

prior to the first flight of the day. 

 

 

 

 

 

Summary of Contents for 150cc Extra 300SP ARF

Page 1: ...P is one of the newest releases in full scale and now R C use Our aircraft was designed with 2 694sq inches of wing area while keeping the total weight to a m inimum Whether you want an aircraft preci...

Page 2: ...and receiver recommended Batteries and switches with regulators if using Ion batteries Six aileron servos rated at least at 150oz of torque Four elevator servos rated at least at 200oz of torque each...

Page 3: ...mbly 1 Canopy 1 Carbon fiber wing tube 1 Carbon fiber stabilizer tube 4 Nylon wing retention bolts 10 H9 titanium pushrods turnbuckles 1 set of Dubro wheel collars 1 pair of Dubro wheel axles 1 HD Dub...

Page 4: ...k over your iron to ensure a scratch free finish Place an to ensure task completion Go over you model as necessary with a covering iron to insure all joints seams and corners are sealed properly Use y...

Page 5: ...eels Fuselage Rudder Tail wheel assembly Not Provided and a 9 16 inch wrench Blue loc tite Allen wrench for wheel collars White wood glue such as Elmer s or Epoxy Slide the wheel cuffs partway onto th...

Page 6: ...ets Don t set the cuffs too tight against the fuselage as the gear needs some room to flex without cracking the cuffs Now let s get the tail wheel assembly installed Once the mains are on find the pre...

Page 7: ...the drilling location for the 4 40 bolts Drill the holes for the 4 40 bolts in the wheel pants at the locations you ve marked Apply some white wood or epoxy glue to the inner side of the four 4 40 bli...

Page 8: ...locations Mark four evenly spaced locations for the screws on each side Double check to ensure all the marked screw locations will go into the hatch rail Remove canopy from the access hatch and drill...

Page 9: ...u ll just need to center your motor in the Take a ruler and draw a line across the entire firewall for the thrust line and offset centerline DA 150 170 users only Center the motor based on your dimens...

Page 10: ...at the field Close the choke and place a piece of tape over the carburetor inlet and exhaust outlet to keep out any dust while setting up your cowl Since the cowl is preset and uses a ring to mount t...

Page 11: ...lizer Now apply epoxy to the hinges Carefully insert the control surface into the stabilizer and butt the two surfaces together Move the surface back and forth a couple of times to make sure all the h...

Page 12: ...ervo arm One Fuel dot or other fueling device Some foam rubber for mounting receiver ignition module and fuel tank Install all your flight control servos with the output shaft closest to the control s...

Page 13: ...centered and mount your arms parallel to the hinge line Be sure that you install the horns at the same height from the hinge line see attached By doing so you will have very little servo matching to d...

Page 14: ...your fuel dot or fueling device Make sure you use Tygon fuel tubing inside the tank for the clunk as well Install the fuel tank just in front of the wing tube using zip ties or hook and latch Velcro s...

Page 15: ...bolts Let s install the wings at this time and check our center of gravity CG Install the carbon fiber wing tube Slide in each wing panel and secure them with the four nylon wing retention bolts Tip 8...

Page 16: ...s capabilities The recommended low rates for this aircraft are 20 degrees for ailerons with 0 to 20 expo 12 degrees for elevators with 0 to 20 expo 30 degrees for rudder with 0 to 20 expo The recommen...

Page 17: ...urface hardware Gently tug on each surface to make sure the hinges are properly bonded Check the four 4 40 horizontal stabilizer fasteners and ensure they re in place and secured Check all servos for...

Page 18: ...henever the nose is pointed down whether at vertical or 45 degrees down line Planes must be inspected frequently looking for any loosening screws bolts and glue joints Servos and linkages must be free...

Page 19: ...19 Throw Template If printing from Adobe turn off page scaling Cut out around all the dotted lines...

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