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4. Fit the vertical fi n and horizontal stabilizer into place. 

Use a felt tip marker to trace around the fuselage onto the tail 
parts top and bottom and left and right side. Trace around the 
fi n onto the fuse. Remove the tail parts and trim the covering 

away 1/16" [1.6mm] inside your lines as shown.

 

HOW TO CUT COVERING FROM BALSA

Use a soldering iron to cut the covering from the stab. The 
tip of the soldering iron doesn’t have to be sharp, but a 
fi ne tip does work best. Allow the iron to heat fully.

Use a straightedge to guide the soldering iron at a rate 
that will just melt the covering and not burn into the wood. 
The hotter the soldering iron, the faster it must travel to 
melt a fi ne cut. Peel off the covering.

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5. Re-insert the horizontal stabilizer and vertical fi n into 

the fuse. With the wing in place, stand behind the model 
approximately 10 feet [3m] and confi rm that the stab sits 
parallel with the wing. If not, weight can be added to the high 
side while gluing the stab in place, or the stab pocket can 
be lightly sanded until the stab and wing sit parallel. When 
satisfi ed, remove the stab and fi n and coat the exposed 
wood with 30-minute epoxy (although messy, a more reliable 
glue joint can be attained if you also coat the inside edges of 
the stab pocket). Reinstall the stab and fi n. Wipe away any 
excess epoxy with denatured alcohol and let the epoxy cure 
undisturbed. When cured, the wing can be removed from 
the fuselage and set aside as it will not be needed until the 
fi nal set up of the plane.

Install servo arms onto the elevator and rudder servos as 
shown. A brass screw lock connector is needed for the 
nose gear pushrod. Enlarge the holes for the rudder and 
elavator pushrods using a 5/64" [2 mm] drill bit. We chose 
a high torque servo for the rudder for more responsive yaw 
control in fl ight.

Summary of Contents for TWINSTAR EP

Page 1: ...using the user assembled product the user accepts all resulting liability If the buyer is not prepared to accept the liability associated with the use of this product the buyer is advised to return th...

Page 2: ...he address or toll free phone number below Academy of Model Aeronautics 5151 East Memorial Drive Muncie IN 47302 9252 Tele 800 435 9262 Fax 765 741 0057 Or via the Internet at http www modelaircraft o...

Page 3: ...red to finish the Twinstar EP that may require planning or decision making before starting to build Order numbers are provided in parentheses Radio Equipment The Twinstar EP requires a minimum 4 chann...

Page 4: ...perience to decide what type of glue to use When a specific type of adhesive works best for that step the instructions will make a recommendation Whenever just epoxy is specified you may use either 30...

Page 5: ...Payment by credit card or personal check only no C O D If additional assistance is required for any reason contact Product Support by e mail at productsupport greatplanes com or by telephone at 217 3...

Page 6: ...part of your pre flight check each and every time you fly 1 Grasp each control surface at one end taking care not to dent or puncture the covering or the wood structure beneath Pull the control surfa...

Page 7: ...the servo extension connectors 3 Pull the strings through the root ribs Be careful not to damage the wing ribs as you pull the servo leads through them 4 Fit the servos into the servo openings and dri...

Page 8: ...secure the control horns into place with the control horn back plates 8 With the ailerons in the neutral position use tape or small clamps to hold them in place mark the pushrod wires where they cros...

Page 9: ...side wall in the location shown on each frame This will provide a smooth surface to mount the ESC 11 Install the aluminum X mount onto the motors using the screws included with the motors and thread l...

Page 10: ...end you inserted through the wing Use one of the included tie straps to secure the connectors together as shown Use a piece of the included double sided foam tape to stick the ESC to the inside of th...

Page 11: ...ON Before installing the nacelle covers in the next step we recommend temporarily connecting the ESCs to your receiver and power up the system Use the transmitter to operate the motors Check to ensure...

Page 12: ...onto the axle Grind a flat spot onto the axle for each wheel collar set screw look at the flat spots on the nose gear for an example Install the wheel collars and wheels back onto the axles and secur...

Page 13: ...place stand behind the model approximately 10 feet 3m and confirm that the stab sits parallel with the wing If not weight can be added to the high side while gluing the stab in place or the stab pocke...

Page 14: ...hrod tubes to determine the location of the servos on the tray The servos should be aligned so that the pushrods overlap the enlarged holes in the servo arms Be sure to harden the wood surrounding the...

Page 15: ...ured use a piece of the included self adhesive hook and loop material to attach the receiver as shown 12 Cut the included 4 100mm length of white tube into two equal pieces Use CA to glue the pieces 9...

Page 16: ...14 Cut a length of non adhesive hook and loop material 5 127mm Overlap the mating ends approximately 1 25mm to make a strap Put a piece of hook material from the self ahesive hook and loop material an...

Page 17: ...hould never be plugged in if the transmitter is off If necessary remove the servo arms from the servos and reposition them so they are centered Reinstall the screws that hold on the servo arms 3 With...

Page 18: ...an t get the throw required you ll have to resort to moving the pushrod closer in on the control horn Note If you have a computer radio it is always desirable to set your ATVs to 100 or as near 100 as...

Page 19: ...t to the other wing tip An airplane that has been laterally balanced will track better in loops and other maneuvers PREFLIGHT Identify Your Model No matter if you fly at an AMA sanctioned R C club sit...

Page 20: ...eless reckless and or dangerous manner 5 I will not fly my model unless it is identified with my name and address or AMA number on or in the model Note This does not apply to models while being flown...

Page 21: ...play If it fluttered once under similar circumstances it will probably flutter again unless the problem is fixed Some things which can cause flutter are Excessive hinge gap Not mounting control horns...

Page 22: ...the ground regaining nose wheel control Remember to mind your battery charge Do not wait until the battery is depleted to begin your landing approach You will need some charge left if you need to aba...

Page 23: ...23...

Page 24: ...GPMA1609 v1 1 Entire Contents 2015 Great Planes Model Mfg A subsidiary of Hobbico Inc...

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