Hangar 9 FuntanaS 3D 90 (HAN2675) Service Bulletin
The Hangar 9 FuntanaS 3D 90 has been designed for extreme 3D flight performance. It is a large model that is extremely lightweight and has large control surfaces. Because of the high performance nature of the FuntanaS, special precautions in the equipment choices, set up of the model, and flying technique are required to prevent damage to the model.
· Use of a larger than recommended engine can cause excessive weight and airspeed, which can result in structural failure.
· The large size of the “3D” control surfaces requires powerful servos. The servos used must be
50 ounce inch torque or greater. JR 811 or 9411 servos are recommended.
· It is necessary to
seal the aileron and elevator hinge gaps to help reduce chances of flutter. Clear Ultracote (HANU887) works well for this.
· Proper mechanical advantage on all control surfaces linkages is extremely important. Use of longer servo arms or shorter control horns will reduce the mechanical advantage and servo power available to the control surface, which will cause flutter.
o The recommended servo arm length is
1” or less as measured from the center of the servo output shaft to linkage connection point. JR heavy-duty arms work well for JR servos, part number JRPA215.
o The distance out on the control horn from the control surface should be
13/16” or greater.
· The FuntanaS 3D .60-.90 is not designed for high-speed flight. Throttle management is
critical in a model of this type.
Do not perform high throttle dives. If the nose is pointed down, bring the throttle back. It is highly recommended that a large diameter, low-pitched propeller be used keep the speed of the model down. An APC 16x4W prop is recommended for the Saito 100 engine.
· The balance point as listed in the manual at 7 1/8” from behind the leading edge of the wing against the fuselage is a neutral CG point, and is the balance point for extreme 3D performance. For more stable flight performance, with reduced 3D ability, move the CG forward as desired.
If you have any further concerns, please contact our product support team for further assistance. You can call us at our toll free number at 877-504-0233 or email at
[email protected].