52" EXTRA 300 EXP Electric ARF Copyright 2016 Extreme Flight 1
Greetings and congratulations on your purchase of the Extreme Flight RC 52" Extra 300 EXP ARF! This new Extra is the first in a series of midsized electrics built around the new Xpwr T3910 brushless outrunner. This size aircraft delivers big plane performance in a package that is easy to transport and maintain at a very reasonable price point.
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. 3. Use a fresh bottle of thin CA with a fine glue tip when attaching the CA hinges. This will ensure that the proper amount of CA wicks into the hinge and surrounding balsa wood and creates a proper bond between the wood and hinges. 4.
Items needed for completion -Masking tape -Hobby knife with #11 blades -Razor saw -Fresh bottle of thin and medium CA -Blue Loctite. -Silicon based glue (Zap-A-Dap-A-Goo, etc.) -Electric drill with an assortment of small drill bits. -Small flat head and Phillips head screw drivers. -Standard and needle nose pliers. -Metric balldriver or allen key set. -4 micro metal geared servos. All flight testing was performed with Hitec HS-5087MH digital servos. -Xpwr T3910 Brushless Outrunner motor.
Let's begin! 1. Locate the 2 wing panels with ailerons as well as the 2 G10 aileron control horns and base plates. Remove the ailerons from the wing and remove the covering over the slot for the aileron horn on the bottom of the aileron with a sharp hobby blade. Make sure you are doing this on the bottom of the aileron! 2. Scuff the portion of the control horn that will be glued into the aileron with sandpaper.
3. Use a glue tip on your bottle of medium CA and apply glue to the slot as well as to both sides of the control horn. Insert the control horn into the baseplate and then into the slot and make sure it seats properly against the surface of the aileron. Wipe away any excess glue with a soft cloth soaked in Acetone.
4. Remove the covering from the aileron servo location and make sure the hinges are centered in their slots. 5. Slide the aileron into position on the hinges and secure with several drops of fresh thin CA. This process is much easier and more effective if a fine glue tip is used. Make sure to deflect the surface as pictured while applying the CA.
6. Use the screws provided by the servo manufacturer to secure the aileron servo in the designated location. Make sure the output shaft is positioned toward the leading edge of the wing. 7. Locate the 2 threaded aileron pushrods that are the same size and 4 micro ball links along with 4 2mm screws, nuts and washers. Thread the ball links onto each end of the pushrods and secure to the servo arm and control horn with the 2 mm hardware as shown in the picture.
8. Locate the carbon fiber main landing gear, 2 axles, 2 locking nuts, 2 wheels, 2 wheel collars and the 2 wheel pants from the hardware package. Place the threaded portion of the axle through the hole in the carbon gear and screw the lock nut onto the axle, but do not tighten completely. Place the wheel onto the axle and secure with a wheel collar. There is a slot pre-cut in the wheel pant to allow it to fit over the axle.
9. Locate the fuselage, 2-3mm socket head cap bolts and 2 washers. Secure the landing gear to the fuselage by inserting a 3mm screw into a washer, through the carbon fiber gear and into the pre-installed blind nut in the fuselage. Make sure to use a drop of blue Loctite on each screw to prevent them from backing out. 10. Locate the horizontal stabilizer/elevator assembly and slide the elevator off of the hinges. Use a razor saw to remove portion of the rudder post located behind the elevator slot.
11. Insert the stabilizer into its slot and the carbon fiber wing tube into the plastic sleeve. Use a ruler to insure that the stabilizer is centered in its slot and compare the stabilizer to the wing tube to make sure it is properly aligned. Sand or shim the slot if necessary to ensure proper alignment. Secure the stabilizer with CA. 12. Remove the covering over the left slot on the bottom of the elevator where the elevator control horn will be installed.
. Slide the elevator onto the hinges in the stabilizer and secure with thin CA. Again a fresh bottle of CA and a fine glue tip work best here. 14. Remove the covering over the slot in the lower left side of the rudder where the rudder control horn will be installed. Scuff the portion of the control horn that will glue into the surface and slide it through the baseplate. Secure the rudder control horn with medium CA.
15. Using the same process as with the ailerons and elevator, slide the rudder onto the hinges and secure to the vertical stabilizer with thin CA. 16. Locate the carbon fiber tailwheel assembly in the hardware package. Secure the tailwheel bracket to the bottom rear of the fuselage with the provided wood screws. Make sure the pivot point of the assembly is over the hinge line of the rudder for best results. 17.
18. Place the tailwheel wire in the proper position, aligned with the rudder and lock into place with the 2 set screws. 19. Use the hardware provided with the servos to install the rudder and elevator servos in their respective location in the rear of the aircraft. From the pilot's perspective the rudder servo mounts on the left side of the fuselage and the elevator servo mounts on the right side. Both servos should have the output shaft oriented toward the front of the aircraft. 20.
21. Next lets mount the Xpwr T3910 motor to the airframe. First go over all of the motorbox joints with thin CA! Secure the radial X mount and prop adapter to the motor with the supplied hardware. Use the supplied 4mm socket head cap bolts and washers to secure the motor to the front of the motor box. Be sure to use Loctite on all bolts! 22. Mount the ESC to the bottom of the motor box using Velcro straps or nylon cable ties.
23. For quick, easy and accurate mounting of the cowl we recommend the following method. Tear 4 short pieces of masking tape from a roll. Place each piece of tape on the side of the fuselage so that each piece corresponds with one of the 4 cowl mounting tabs. Use a fine tipped marker to mark the location of the center of each mounting tab. Roll the tape back and slide the cowl into position.
24. Place a strip of Velcro onto the battery tray and onto your battery and use a Velcro strap around the battery and tray to prevent the battery from being ejected during high G maneuvers. Mount your receiver on the wing retention cross brace. 25. If using the included Side Force Generators now is the time to mount them. Each SFG mounts using 2 3mm thumb screws and 2 clear plastic washers.
26. Slide the carbon fiber wing tube into the fuselage and the wings onto the tube. Secure to the fuselage using the 2 3mm bolts and washers inserted through the tabs and into the pre-installed blind nuts. Set-up and flying tips The CG range for the 52" Extra EXP starts at the front of the wing tube and extends to the rear of the wing tube. There is plenty of room on the battery tray to move your battery to achieve this CG location.
3D flight will allow you to experience the best attributes of the Extra EXP or any aircraft for that matter. The included elevator servo arm will allow for close to 80 degrees of throw! While this is great for really aggressive tumbling maneuvers, positive and negative waterfalls and straight down dropping elevators, it can wreak havoc on stable harriers, especially if you are just learning the maneuver.
