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35

Flying

Now that the airplane is set up correctly, it is time 

to fine-tune the setup in the air. Start by flying the 

airplane on low rates. If you have triple rates, set the 

mid-rate in between the high and low rates. Once 

you get comfortable with the airplane and tune the 

exponential setting, you will be able to fly it all the 

time on the 3D rates.
One will find the propeller effects (such as torque, 

spiral slipstream, P-factor, gyroscopic procession and 

prop normal force) often dominate the stability and 

control of the smaller indoor airplanes. Consequently, 

the use of smaller diameter/lower-pitch propellers 

tends to reduce the adverse effects on the airplane’s 

longitudinal and directional stability. The smaller 

diameter will reduce static thrust, however lower pitch 

increases static thrust. With this in mind, we quickly 

see there is a compromise between the precision 

and 3D propeller selection. As with most airplanes, 

if you use the rudder to generate large yaw rate 

you’ll have to counter the adverse rolling moment 

with some opposite aileron. With a little practice, this 

will become very natural and you can use the rudder 

literally like the steering wheel of a car.

Rolling maneuvers are done with relative ease from 

normal aileron rolls to slow rolls, point rolls, rolling 

circles and rolling loops. Knife-edge flight is also 

possible. The Tribute and Ultimate are especially 

good at the 3D type maneuvers such as Torque 

Rolls, Elevators / Harriers, and High-Alpha Rolls. 

While the airplanes are quite capable of all these 

maneuvers, the ultimate goal is to make the pilot 

capable of performing them as well. We do not 

know of any airplane design that will Torque Roll / 

Hover without constant help from the pilot. If such an 

airplane existed, the mystique of the maneuver would 

disappear simply because the pilot skill required 

to perform the maneuver would have been taken 

away…in other words the difficulty actually makes it 

worth learning.
How does one go about learning how to torque roll? 

The best way is to practice on a simulator until you 

can literally do the maneuver without needing to 

think about the inputs. The skill involved is nothing 

more than a muscle memory response to what you 

see the airplane doing.

34

While this is not standard or recommended practice 

on a larger airplane because of the potential of 

flutter, this type of setup works quite well on the 

aerobatic indoor electric models.
Large amounts of throw tend to make the airplane 

feel very sensitive around neutral. Because of this, 

it is highly recommended that you use a radio with 

dual rates that is capable of exponential throws. A 

good way to correctly set the amount of exponential 

for the 3D-rate is to find a low-rate setting that feels 

comfortable in normal flight. Once you’ve done this 

for the aileron, elevator, and rudder, dial in enough 

exponential to make the low-rate setting and 3D-rate 

setting feel the same for the first 1/3 of the stick 

travel. If you have a computer radio that displays 

the graph of stick position vs. servo output, you 

can easily set the correct amount of exponential by 

making the slopes of these graphs identical for the 

first 1/3 of stick movement.

Slope of the line is the same for the first 1/3 of the stick travel

Stick travel

3D Rate

Low Rate

Servo Output

1/3 of total

stick travel

Summary of Contents for Tribute EP 3D Profile

Page 1: ...Ultimate EP 3D Profile and Tribute EP 3D Profile Instruction Manual...

Page 2: ...nkages 15 Wing Installation 19 Top Wing Installation Ultimate 21 Aileron Servo Installation 22 Ultimate Aileron Connection Linkage 25 Gearbox Installation 28 Final Assembly 30 Control Throws 31 Longit...

Page 3: ...micro servo 4 Receiver JR R610M 6 channel micro FM Rx Battery and Speed Control Requirements Li Po Battery 7 4V 860 2100 2 Cell stock motor 11 1V 860 2100 3 Cell brushless motor Speed Control 20 Amp E...

Page 4: ...EFL2027 Wing Set w Struts EFL2026 Horizontal Tail Assembly EFL2028 Wheel Pants EFL2029 Decals Ultimate EFL2031 Tribute Replacement Parts Wing EFL2001 Fuselage w rudder EFL2002 Horizontal Tail Assembly...

Page 5: ...Micro Pushrod Keepers EFLA201 Tailskid EFLA202 Micro Control Connectors EFLA203 Micro Rubber Spinner EFL204 Micro Park Wheels EFL205 370 Motor w gearbox EFLM205 Decals Tribute EFL2008 Decals Ultimate...

Page 6: ...Inc 4105 Fieldstone Road Champaign Illinois 61822 877 504 0233 www horizonhobby com Warranty Information Horizon Hobby Inc guarantees this kit to be free from defects in both material and workmanship...

Page 7: ...pments in small 3D Aerobatic Electric design These designs are meant to serve as both an advanced trainer for those interested in learning 3D aerobatics while also being a tool to keep the proficient...

Page 8: ...he motor while it is running Although it takes only a short amount of time a few seconds vs a few minutes as stated earlier there is a higher risk of damage to the motor To perform a water break in si...

Page 9: ...ing Elevator stabilizer Decals 1 Apply the decals as shown in the illustration and on the box It may be helpful to spray a mixture of water mixed with 1 2 drops of detergent onto the airframe so the d...

Page 10: ...ls and Adhesives Square Foam safe CA 1 Locate the stabilizer and remove the elevator that is not hinged to the stabilizer Measure and draw a centerline on the stabilizer 2 Slide the stabilizer into th...

Page 11: ...CA to glue the stabilizer into the fuselage 4 Use foam safe CA to glue the elevator to the balsa elevator joiner Use the included clear tape on the top and bottom of the hinge line to complete the ele...

Page 12: ...s Landing gear wire right and left Required Tools and Adhesives Foam safe CA 1 16 Drill bit Sewing needle Silicon glue 1 Make 5 6 1 16 1 5mm holes above the fuselage brace above and below the landing...

Page 13: ...h sides of the fuselage Note It is helpful to use a needle to thread the retaining thread through the holes 4 Slide the wheels onto the landing gear Slide the wheel pants onto the landing gear and glu...

Page 14: ...14 5 Press the tail skid into position on the bottom of the fuselage Remove the skid and apply 2 3 drops of foam safe CA onto the skid and press it into the holes...

Page 15: ...de 12 Pushrod wire 2 Control horn backplate 2 Double sided tape 2 Micro pushrod keepers 2 Micro control connectors 2 Required Tools and Adhesives Square Hobby knife Ruler Foam safe CA Pliers Servo 2 1...

Page 16: ...stall long servo arms at this time Center the output of the servo in the slots and use double sided tape to attach the servos to the fuselage 3 Install the micro control connectors onto the rudder ser...

Page 17: ...e horn to secure it in place 6 Attach the L bend to the control horn using a micro pushrod keeper The control horn is not on control surface for more detail 7 Roughen 4 6 pushrod guides using medium g...

Page 18: ...etween the rudder and servo Use foam safe CA to glue the guides to the fuselage 9 Center the rudder and tighten the screw in the connector to secure the pushrod Trim off any excess wire 10 Repeat Step...

Page 19: ...ing for the Ultimate follow the exact same procedure Installation of the top wing for the Ultimate is covered in Top Wing Installation Ultimate If you are building the Tribute you can skip to Aileron...

Page 20: ...tween the ailerons 3 Use a square to align the main spar in the wing to the fuselage 4 Check and adjust the wing so it is parallel to the stabilizer 5 Double check the alignment of the wing made in St...

Page 21: ...nd Adhesives Square Foam safe CA 1 Locate the two wing struts Note the top and bottom of each strut as shown 2 Check the fit of one of the struts to the top wing The strut will angle back toward the t...

Page 22: ...ce satisfied with the fit Aileron Servo Installation Required Parts Airplane assembly Pushrod wire Micro control connector 2 Control horn 2 Control horn backplate 2 Servo tape 2 Micro pushrod keepers...

Page 23: ...ng a micro pushrod keeper 3 Center one aileron servo and install a long arm onto the servo Attach a pushrod connector to the outer hole of the servo arm 4 Use servo tape to secure the servo to the win...

Page 24: ...24 5 Center the aileron servo and aileron Tighten the screw on the connector to secure the pushrod wire 6 Repeat Steps 1 through 5 for the remaining aileron servo...

Page 25: ...Micro pushrod keeper 4 Required Tools and Adhesives Pliers 1 Locate two control horns and two control horn back plates Install one control horn in the top aileron the other in the bottom aileron The h...

Page 26: ...L bend in one end of a pushrod wire Attach the wire to the bottom control horn using a micro pushrod keeper 3 Mark the pushrod where it crosses the hole in the upper control horn Make a 90 degree bend...

Page 27: ...27 4 Secure the pushrod to the control horn using a micro pushrod keeper Trim the excess wire 5 Repeat Steps 1 through 4 for the opposite ailerons...

Page 28: ...ll Phillips screwdriver 1 Test fit the gearbox mounting block onto the fuselage stiffener Slide the block onto the stiffener so the front edge of the block is even with the front edge of the stiffener...

Page 29: ...hobby knife to make a pilot hole for the 2mm x 6mm screw Secure the gearbox using the screw 3 Attach the propeller and spinner to the motor gearbox output shaft The washer is placed on the front betwe...

Page 30: ...n servo lead through Plug the servos into the receiver Cut a piece of hook and loop material in half Attach the receiver to the fuselage using the cut piece of hook and loop material Route the antenna...

Page 31: ...high center of gravity is important To achieve this we recommend locating the battery on the cabane strut even with the front edge Control Throws Tribute Low Rate High Rate Aileron 1 25mm Up 11 4 32m...

Page 32: ...the correct CG Note For best flight performance of the Ultimate a high center of gravity is important To achieve this we recommend locating the battery on the cabane strut even with the front edge Lon...

Page 33: ...dvance the throttle to full power The thrust should be enough to make the airplane accelerate vertically from a standstill Many people also consider the proverbial aft center of gravity CG to be cruci...

Page 34: ...tial for the 3D rate is to find a low rate setting that feels comfortable in normal flight Once you ve done this for the aileron elevator and rudder dial in enough exponential to make the low rate set...

Page 35: ...olling moment with some opposite aileron With a little practice this will become very natural and you can use the rudder literally like the steering wheel of a car Rolling maneuvers are done with rela...

Page 36: ...that your simulator practice must be supplemented with actual flying because you need to learn how to react when the consequence of a mistake is a crash The good thing about the Tribute and Ultimate...

Page 37: ...hen you start doing this you will quickly realize that you are starting to perform a very high angle of attack harrier With this in mind lets tackle the Elevator and Harrier which is the second most p...

Page 38: ...llfully and deliberately fly my models in a careless reckless and or dangerous manner 4 The maximum takeoff weight of a model is 55 pounds except models flown under Experimental Aircraft rules 5 I wil...

Page 39: ...erence exists Allocation plans or interference test reports shall be signed by the parties involved and provided to AMA Headquarters Documents of agreement and reports may exist between 1 two or more...

Page 40: ...2004 Horizon Hobby Inc 4105 Fieldstone Road Champaign Illinois 61822 877 504 0233 www horizonhobby com...

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