Assemble the aileron pushrods exactly as you did the elevator pushrod. Assemble the pushrod
connectors onto the servo arm and install the pushrod as shown. Be sure to use medium CA glue to
lock the 2mm nut that holes the ball link onto the control horn. Repeat for other wing. Mount the
wings to the fuselage using the black nylon thumbscrews.
You can mount your receiver with Velcro and use CA glue to mount the balsa to the airframe.
Apply one side of the self-adhesive Velcro tape to the battery tray, the other to your battery. Use the
Velcro strap as a “seatbelt” to hold your battery in position. Always make sure your battery is firmly
strapped down before flight.
Balancing
– Balance your Extra 330
108mm
behind the leading edge of the wing where the wing
meets the fuselage. During your maiden flight, this is approximately on the forward edge of the carbon
wing spar tube. Move the flight battery to balance as necessary.
Remember – It is much more important to have a properly balanced airplane than to save one ounce of
total weight. The Extra 330 carries additional weight very well because of its superior aerodynamic
design, and nose weight can always be removed again if desired. After you have flown several flights,
you can tune your CG to suit your personal flying preferences.
When you experiment with CG location, move the CG only small amounts, 1/8 inch or so, at a time.
A small change in CG can have a large affect on flight characteristics.
