Hangar 9 showtime 4d 90 Assembly Manual

ShowTime 4D 90





ASSEMBLY MANUAL

Specifications

Wingspan: ......................................66 in (1676mm)

Length: ........................................68.3 in (1734mm)

Wing Area: ...........................900 sq in (58.1sq dm)

Weight: .................................... 8–9 lb (3.6–4.1 kg)

Radio: ................................... 4-channel w/6 servos

Recommended Engines: ...............61–1.00 2-stroke

...............91–1.10 4-stroke

Table of Contents

Covering Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Contents of Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Additional Required Equipment
Additional Required Tools and Adhesives
Servo Selection

Before Starting Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 1 – Hinging the Control Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 2 – Aileron Servo Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 3 – Joiner Tube Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 4 –Elevator Servo Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 5 – Landing Gear Installation
Section 6A – Engine Installation: Saito 1.00

Section 6B – Engine Installation: Evolution 1.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 7A – Rudder Servo Installation: Pull-pull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 7B – Rudder Servo Installation: Tail Mounted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

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Section 8 – Tail Wheel Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 9 – Radio Installation
Section 10 – Cowling Installation

Section 11 – Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flying Information
Balancing the Model
Control Throws

Preflight at the Field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2005 Official AMA
National Model Aircraft Safety Code

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Covering Colors

• White HAUN870

• True Red HANU866

• Bright Yellow HANU872

• Pearl Purple HANU847

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2

Contents of Kit

F

E

G

J

L

H

K

M

A

B

Small Parts:

1. Fuel Tank

2. Engine Mount

3. Tail Wheel Assembly (HAN2812)

C

Large Parts:

A. Right Wing (HAN2802)
B. Left Wing Panel (HAN2803)

D

I

C. Fuselage (HAN2803)
D. Stabilizer Set w/Elevators (HAN2804)
E. Canopy (HAN2806)

D

F. Cowling (HAN2808)
G. Anodized Wing Tube (HAN2814)
H. Canopy Hatch (HAN2807)
I. Rudder (HAN2805)
J. Stabilizer Tube (HAN2813)
K. SFG Set (HAN2816)
L. Carbon Fiber Landing Gear (HAN2809)
M. Wheel Pant Set (HAN2810)

Items Not Shown:

Decal Set (HAN2814)
Pushrod Set (HAN2815)

Additional Required Equipment

Radio Equipment

• 6-channel radio system (minimum)

• 1 standard servo for throttle (JRPS537 recommended
or equivalent)

• 4 hi-torque servos (JRPS9411 recommended
or equivalent)

• 1 hi-torque servo (JRPS8411SA recommended
or equivalent for rudder)

Recommended JR® Systems

Recommended Engines

• PCM10X

• XP9303

• XP8103

• X-378

• XP6102

• XF631

• 4-Stroke: Saito 1.00

• 2-Stroke: Evolution 1.00

JR XP9303

Saito™ 1.00 4-stroke

SAIE100

Evolution 1.00

JR XP6102

EVOE1000

3

Additional Required Tools and Adhesives

Tools

• 4-40 tap

• Adjustable wrench (small)

• Canopy scissors

• Drill (drill press preferred)

• Drill bit: 1/16”, 3/16”, 5/64”, 7/32”, #43, 5/32”

• Drum sander

• Cut-off wheel

• Flat blade screwdriver w/short handle

• Foam: 1/4”

• Hex wrench: 3/32”

• Hobby knife

• Masking tape

• Phillips screwdriver (small)

• Razor saw

• Scissors

• Square

• Syringe

• Tap handle

• Toothpicks

• Velcro straps

Adhesives

• 30-minute epoxy

• Medium CA (cyanoacrylate) glue

• CA remover/debonder

• Pacer Z-42 Threadlock

• Pacer hinge glue (PT-55)

• Formula 560—canopy glue

• Shoo Goo

Other Required Items

• Epoxy brushes

• Felt-tipped pen or pencil

• Measuring device (e.g. ruler, tape measure)

• Mixing sticks for epoxy

• Paper towels

• Petroleum jelly

• Rubbing alcohol

• Sanding bar

• Sandpaper (coarse)

• Covering Iron (HAN101)

• Dental floss or string

• Covering Glove (HAN150)

• Sealing Iron Sock (HAN141)

Servo Selection

The servos used for the control surfaces of the ShowTime must have a minimum of 80 ounce inch of servo torque. In the
prototype ShowTime, we used JR9411 servos on the ailerons and elevator, and a JR8411SA servo for the rudder.

JR9411 Ultra Precision Wide Bearing (aileron and elevator)

Torque: 82 oz/in Speed: .15 sec/60°
Weight: 1.36 oz Size: 0.75” x 1.41” x 1.03”
Motor: Coreless Ball Bearing: Dual widespaced

JR8411SA Digital Ultra Torque (rudder)

Torque: 155 oz/in Speed: .18 sec/60°
Weight: 2.00 oz Size: 0.75” x 1.54” x 1.36”
Motor: Coreless Ball Bearing: Dual widespaced

4

Before Starting Assembly

Before beginning the assembly of your ShowTime, remove each part from its bag for inspection. Closely inspect the
fuselage, wing panels, rudder, stabilizer and side force generators for damage. If you find any damaged or missing parts,
contact the place of purchase.

If you find any wrinkles in the covering, use a heat gun or covering iron to remove them. Use caution while working
around areas where the colors overlap to prevent separating the colors.

HAN100 – Heat Gun

HAN150 – Covering Glove

HAN101 – Covering Iron

HAN141 – Sealing Iron

Sock

Warning

An RC aircraft is not a toy! If misused, it can cause serious bodily harm and damage to property. Fly only in open areas,
preferably at AMA (Academy of Model Aeronautics) approved flying sites, following all instructions included with your
radio and engine.

Using the Manual

This manual is divided into sections to help make assembly easier to understand, and to provide breaks between each
major section. Remember to take your time and follow the directions.

Warranty Information

Horizon Hobby, Inc. guarantees this kit to be free from defects in both material and workmanship at the date of purchase.
This warranty does not cover any component parts damaged by use or modification. In no case shall Horizon Hobby’s
liability exceed the original cost of the purchased kit. Further, Horizon Hobby reserves the right to change or modify this
warranty without notice.

In that Horizon Hobby has no control over the final assembly or material used for the final assembly, no liability shall
be assumed nor accepted for any damage resulting from the use of the final assembled product. By the act of using the
assembled product, the user accepts all resulting liability.

Please note that once assembly of the model has been started, you must contact Horizon Hobby, Inc. directly regarding
any warranty question. Please do not contact your local hobby shop regarding warranty issues, even if that is where you
purchased it. This will enable Horizon to better answer your questions and service you in the event that you may need any
assistance.

If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to return
this kit immediately in new and unused condition to the place of purchase.

Horizon Hobby, Inc.

4105 Fieldstone Road

Champaign, Illinois 61822

[phone]

horizonhobby.com

5

Section 1 – Hinging the Control Surfaces

Required Parts

• Wing w/aileron • Stabilizer w/elevators

• Fuselage • Rudder

• CA hinges (20)

Required Tools and Adhesives

• Thin CA • T-pins

• Drill • Drill bit: 1/16"

  

Carefully remove the tape holding the aileron to the wing.
Use a 1/16" drill bit to drill into the wing and aileron at the
center of each hinge. This allows the CA to wick farther
into the surfaces for better hinge installation.

Step 1

  

Slide the aileron onto the wing until there is only a slight
gap between the aileron and wing panel. Remove the
T-pins and snug the aileron against the wing panel. Slide
the aileron towards the wing tip until the aileron aligns
with the wing tip.

Step 3

Note: Do not use CA accelerator during the

hinging process. The CA must be allowed to
soak into the hinge to provide the best bond.
Using accelerator will not provide enough time
for this process.

  

Locate five CA hinges and place a T-pin in the center of
the hinge as shown. Slide each of the five hinges into the
aileron so the T-pin is resting against the leading edge
of the aileron. The slot in the hinge aligns with the hole
drilled in Step 1.

Step 2

  

Deflect the aileron and apply thin CA to the hinge. Apply
enough CA to completely saturate the hinge. Use care
not to deflect the aileron so it pulls away from the wing.
When the hinge is glued in place, there should be no
more than a 1/64" hinge gap maintained throughout
the length of the aileron.

Step 4

6

Section 1 – Hinging the Control Surfaces

  

Turn the wing panel over, deflect the aileron in the
opposite direction and apply thin CA to the other side of
the hinges as described in the previous step. Make sure
the thin CA penetrates completely into both the aileron
and wing panel.

  

Use CA remover/debonder and a paper towel to remove
any excess CA accumulated on the wing or aileron
surface. Allow time for the CA to completely cure before
moving to the next step.

Step 5

Step 6

  

Work the aileron up and down several times to work in the
hinges and check for proper movement.

Step 8

  

Firmly grasp the wing and aileron and gently pull on the
aileron to ensure the hinges are secure and cannot be
pulled apart. Use caution when gripping the wing and
aileron to avoid crushing the structure.

Step 7

Step 9



Repeat Steps 1 through 8 for the remaining aileron.

7

Section 1 – Hinging the Control Surfaces

Step 10



Glue the elevator hinges in place using the same
techniques used to hinge the ailerons.

Step 11



Since all that’s left is the rudder, this is a good time
to install the four hinges here as well. Follow Steps 1
through 8 to complete hinging the control surfaces.

Section 2 – Aileron Servo Installation

Required Parts

• Wing panel (right and left) • 4-40 lock nut (2)

3

• 2

/4" aileron linkage (2)

1

• 8-32 x 2

/4" control horn screw (2)

• Ball link for servo arm (2)

• Molded swivel link (2)

• Ball link for swivel link (2)

• 4-40 x 1/2" socket head screw (2)

Required Tools and Adhesives

• Phillips screwdriver (small) • Ruler

• Drill • Drill bit: 1/16"

• 6-minute epoxy • Threadlock

• 12" Servo Extension (JRPA098) (2)

• HD 1/2 Servo Arm 4-40: JR (HAN3574) (2)

 

Install the servo hardware (grommets and eyelets)
included with the servo.

Step 1

8

Section 2 – Aileron Servo Installation

Step 2

 

Plug a 12" servo extension onto the servo. Either tie
the servo leads together, using a commercially
available connector, or use unwaxed dental floss to
secure the extensions to prevent them from coming
loose during flight.

Step 3

 

Tie a weight to a piece of string. A wheel collar works
great in this application. Lower the string into the wing
from the aileron servo opening. Hold the wing with the tip
upwards and let the weight drop out through the wing root
for the servo.

 

Step 4

Tie the string to the servo extension and insert the servo
into the wing. Use the string to pull the servo lead through
the wing. Position the servo so the output shaft is towards
the trailing edge of the wing. Use a 1/16" drill bit to drill
the locations for the servo screws. Mount the servos using
the hardware provided with the servos.

 

Step 5

Mix a small amount of 6-minute epoxy and lightly coat

1

the inside of the hole in the aileron and the 8-32 x 2

/4"
control horn screw. Slide the screw into the hole from the
top of the wing. Wipe away any excess epoxy on the wing
and screw with rubbing alcohol and a paper towel. Allow
the epoxy to fully cure before continuing.

9

Section 2 – Aileron Servo Installation

Step 6

 

Screw the molded swivel link onto the 8-32 screw until
the distance from the aileron surface to the top of the
link is 27/32".

Step 7

 

Using the 4-40 screw (don’t substitute a standard screw)
and nut included, attach the ball link to the outer hole
in the servo arm from the bottom side as shown. The
sequence is screw, ball link, servo arm, and nut.

 

Screw a 4-40 ball link 5 to 6 turns onto each end of a
2 3/4" long aileron linkage. Adjust the linkage length
until the hole in the ball link aligns with the outer hole
in the servo arm when the aileron is neutral and the
servo arm is centered.

 

Center the servo using the radio system. Attach the servo
horn to the servo using the screw provided with the servo.

 

Attach the linkage to the servo horn on the aileron.
Adjust the link so the aileron is centered at the same
time as the servo. Use threadlock to secure the screw.

Step 8

Step 9

Step 10

Note: Hangar 9® aluminum servo arms

are suggested for ease of installation and
durability. Use HD 1/2 Servo Arm 4-40: JR
(HAN3574) for the aileron servos.

Step 11



Repeat Steps 1 through 10 for the remaining wing panel.

10

Section 3 – Joiner Tube Installation

Required Parts

• Wing panels • Fuselage

• Wing tube • Stabilizer tube

• 1/4-20 x 2" nylon bolt (2)

• 4-40 x 1/2" socket head screw (2)

Required Tools and Adhesives

• Drill • Drill bit: #43

• Tap handle • 4-40 tap

• Ruler

Step 1



Remove the four 4-40 x1/2" screws securing the hatch
to the fuselage. Remove the hatch and store it in a
safe place until later.

Step 2



Locate the wing tube and carefully slide it into one
wing panel. Slide the wing (with tube) into the wing
tube opening in the fuselage. Make sure the wing panel
alignment pins slide into the holes provided in the
fuselage. Be sure the alignment pins are secure in the
wing halves before installing the wings. If they are not,
remove the pin and apply a small amount of thin CA into
the tube socket and reinstall the alignment pin.

Step 3



Carefully slide the remaining wing panel onto the wing
tube that projects from the fuselage. The fit may be tight;
use caution when inserting the wing panels onto the wing
tube and fuselage.

Step 4



Secure the wing panels using the 1/4-20 x 2" nylon
wing bolts.

Step 5



Insert the stabilizer tube into the aft hole in the fuselage.
Measure the distance of the exposed tube and adjust until
both sides are equal.

11

Section 3 – Joiner Tube Installation

Step 6



Mark the tube on both sides of the fuselage using a
felt-tipped pen.

Step 7



Remove the tube and install it into one elevator up to
the first line on the tube. Drill through the hole into the
stabilizer. Do not drill through the opposite side of the
stabilizer tube. Tap the hole for a 4-40 bolt. Install a
4-40 x 1/2" bolt to secure the tube in the stabilizer.

Step 8



Slide the assembly into the fuselage. Slide the
remaining stab half onto the tube and drill and tap
the location for the 4-40 retaining bolt. Install the bolt
to complete the procedure.

Hint: When removing the stabilizer for storage,
remove only one bolt, leaving the tube secured
in the remaining stabilizer. Trying to install the
tube without the aid of an alignment guide can
be frustrating.

12

Section 4 –Elevator Servo Installation

Required Parts

• Fuselage w/ stabilizer • 5" elevator linkage (2)

• 4-40 locknut (2) • 8-32 flange nut (2)

• Molded swivel link (2)

• Ball link for swivel link (2)

• 4-40 tapered standoff (2)

• Ball link for servo arm (2)

• 4-40 x 1/2" socket head screw (2)

1

• 8-32 x 2

/4" control horn screw (2)

Required Tools and Adhesives

• Drill • Drill bit: 1/16"

• Dental floss or string • 6-minute epoxy

• Control horn ball ends (2)

• 24" Servo Extensions (JRPA102) (2)

• Hangar 9 3D XL 1/2 Servo Arm 4-40:JR (HAN3578)

Note: Using two standard rotation servos and
a standard Y-harness for the elevators will
result in them moving in opposite directions
instead of the same direction. As such, the
elevator installation will either require the
use of a one reversed rotation servo and one
standard rotation servo or a reversing
Y-harness. It is highly recommended to use a
computer radio or a JR® MatchBox™ to link
the two elevator servos to operate properly.

The elevators require a minimum of 80 ounce inch of
servo torque. In the prototype ShowTime we used JR9411
servos with excellent results. Using servos with less
torque could cause a crash.

 

Step 2

Install the servo in the fuselage tail section with the output
shaft to the rear as shown in the photo.

 

Step 3

Using the screws included with the servos, fasten the
servos in place. You may find it helpful to drill a 1/16"
pilot hole before installing the screws.

 

Mix a small amount of 6-minute epoxy and lightly
coat the inside of the hole in the elevator and the
8-32 x 2

Step 4

1

/4" control horn screw. Slide the screw into
the hole from the top of the elevator. Wipe away any
excess epoxy on the wing and screw with rubbing alcohol
and a paper towel. Allow the epoxy to fully cure before
proceeding to the next step.

Step 1

 

Install a 24" servo extension onto an elevator servo. Tie
the servo leads together, use a commercially available
connector, or use unwaxed dental floss to secure the
extensions to prevent them from coming loose during
flight. Install one side only of the two Y-harnesses to two
of the servos, also tying knots to prevent disconnection.
The other servo will be hooked up to the Y-harness when
installed in the airplane. One elevator servo will need to be
a reversed-direction servo.

13

Section 4 –Elevator Servo Installation

Step 5

 

Screw the molded swivel link onto the 8-32 screw until
the distance from the elevator surface to the top of the
link is 31/32".

Step 6

 

Remove the stock servo arms from the elevator servos and
replace them with Hangar 9 3D XL 1/2 Servo Arm 4-40:
JR. The arms need to face down as shown. Be sure to
use a drop of threadlock on the servo arm screw if using
metal-geared servos.

 

Use the included 4-40 screws and nuts to attach the ball
link to the outer hole in the arm. The correct sequence
is 4-40 screw, ball link, servo arm, and 4-40 locknut. Be
sure to use threadlock.



Repeat Steps 1 through 8 for the remaining elevator servo
and linkage.

Step 8

Step 9

Step 7

 

Screw a 4-40 ball link 5 to 6 turns onto a 5" elevator
linkage. Screw the opposite end of the linkage into the
swivel control horn on the elevator. Adjust the linkage
length until the hole in the ball link lines up with the outer
hole in the servo arm when the elevator is neutral and the
servo arm is centered.

14

Section 5 – Landing Gear Installation

Required Parts

• Fuselage • #8 washer (2)

• Main gear axle w/nut (2) • #4 washer (2)

1

• 2

/2" wheel (2) • 3/16" wheel collar (4)

• Wheel pant (left and right)

• 8-32 x 3/4" socket head bolt (2)

• 4-40 x 1/2" socket head screw (2)

Required Tools and Adhesives

• Felt-tipped pen • Ruler

• Adjustable wrench (small)

• Hex wrench: 5/32", 9/64"

Step 1



Install the axles in the landing gear. Secure the axles using
an adjustable wrench and the nuts provided with the axles.

 

Fit the pants over the axle on the landing gear. Align the
centerline of the wheel pant to the centerline of
the fuselage. Use a felt-tipped pen to transfer the
location of the mounting hole from the landing gear onto
the wheel pant.

Step 3

Step 2



Install the landing gear using two 8-32 x 3/4" socket head
bolts and two #8 washers.

15

Section 5 – Landing Gear Installation

Step 4

 

Remove the pant and use a 9/64" drill bit to drill the
location marked in the previous step.

Step 5

 

Install a 4-40 blind nut into the hole from the inside
of the pant. The nut will be drawn into the plywood later
in this section.

 

Secure the pant in place using a 4-40 x 1/2" socket head
screw and a #4 washer. Use threadlock on the screw

to prevent it from coming loose in flight.

 

Center the wheel in the wheel pant and tighten the collars
to prevent the wheel from moving side to side. Use
threadlock on both set screws.

Step 7

Step 8

Step 6

 

Install the following items onto the axle: 3/16" wheel
collar, wheel, 3/16" wheel collar.

16

Step 9



Repeat Steps 3 through 8 for the remaining wheel pant.

Section 6A – Engine Installation: Saito 1.00

Required Parts

• Fuselage • Engine mount (2)

• 8-32 x 1" screw (4) • 8-32 locknut (4)

• #8 washer (12) • Fuel tank assembly

1

• 8-32 x 1

/4" screw (4) • 13" tie wrap (2)

• Nylon clevis • 1/4" fuel tubing

• 17" throttle pushrod tube

Required Tools and Adhesives

• Medium CA • Ruler

• Drill • Drill bit: 11/64"

• Square • Hobby knife

• Foam: 1/4" • Felt-tipped pen

• Threadlock

Step 1



Locate the two engine mount halves. Attach them to the
firewall using four 8-32 x 1" screws and four #8 washers.

Use threadlock on the screw to prevent it from
coming loose in flight.

Step 3



Transfer the location of the holes on the engine mounting
lugs onto the engine mount.

Step 4



Use a drill and 11/64" drill bit to drill the locations for the
engine mounting bolts.

Step 2



Place the engine onto the engine mount. Position the

3

engine so the drive washer is 5

/4" from the firewall.

Note: It is best to use a drill press for drilling
the holes in the engine mounts.

17

Section 6A – Engine Installation: Saito 1.00

Step 5



1

Attach the engine to the mount using four 8-32 x 1

/4"

bolts, eight #8 washers and four 8-32 locknuts.

Step 6



Mark the location for the throttle pushrod onto the
firewall using a felt-tipped pen. Drill the location using
an 11/64" drill bit.

Step 7



Roughen the end of the pushrod tube using coarse
sandpaper. Slide the tube into the hole, guiding it to
the sides of the fuel tank area. The tube will extend
1/16" forward of the firewall. Use medium CA to glue
the tube into position.

Step 8



Trim the pushrod tube at the front edge of the servo tray.

18

Section 6A – Engine Installation: Saito 1.00

Step 9



Slide the clevis retainer onto the clevis, and then thread
the clevis onto the throttle pushrod. Slide the pushrod into
the tube, and attach the clevis to the throttle arm.

Step 10



Position the tank into the fuselage. Install the fuel tank
brace at the rear of the tank. Use the 13" tie wraps to
secure the fuel tank to the tank floor.

Step 11



Connect two 12" pieces of fuel tubing for pickup and
vent tubes. Attach the green tubing to the pick-up, the
red to the vent.

Step 12



Make the proper connections to the engine, using the
engine manufacturer’s instructions. If you are using a
4-stoke, make sure to route the crankcase vent to the
outside of the cowling.

Note: Before installing the fuel tank, look at
the tubes of the tank to determine which is the
vent and which is the clunk line.

Note: Connect the pressure line to the muffler
once the cowl has been trimmed and fitted.

19

Section 6B – Engine Installation: Evolution 1.00

Required Parts

• Fuselage • Engine mount (2)

• 8-32 x 1" screw (4) • 8-32 locknut (4)

• 17” throttle pushrod tube • #8 washer (12)

1

• 8-32 x 1

/4" screw (4) • 13" tie wrap (2)

• Nylon clevis • 1/4" fuel tubing

• Fuel Tank Assembly

Required Tools and Adhesives

• Medium CA • Drill

• Drill bit: 11/64" • Ruler

• Square • Hobby knife

• Foam: 1/4" • Felt-tipped pen

Step 1



Locate the two engine mount halves. Attach them to the
firewall using four 8-32 x 1" screws and four #8 washers.

Step 3



Transfer the location of the holes on the engine mounting
lugs onto the engine mount.

Step 4



Use a drill and 11/64" drill bit to drill the locations for the
engine mounting bolts.

Step 2



Place the engine onto the engine mount. Position the

3

engine so the drive washer is 5

20

/4" from the firewall.

Note: It is best to use a drill press for drilling
the holes in the engine mounts.

Section 6B – Engine Installation: Evolution 1.00

Step 5



1

Attach the engine to the mount using four 8-32 x 1

/4"

bolts, eight #8 washers and four 8-32 locknuts.

Step 6



Mark the location for the throttle pushrod onto the firewall
using a felt-tipped pen. Drill the location using an 11/64"
drill bit.

Step 7



Roughen the end of the pushrod tube using coarse
sandpaper. Slide the tube into the hole, guiding it to the
sides of the fuel tank area. The tube will extend 1/16"
forward of the firewall. Use medium CA to glue the
tube into position.

Step 8



Trim the pushrod tube at the front edge of the servo tray.

21

Section 6B – Engine Installation: Evolution 1.00

Step 9



Slide the clevis retainer onto the clevis, and then thread
the clevis onto the throttle pushrod. Slide the pushrod into
the tube, and attach the clevis to the throttle arm.

Step 10



Position the tank into the fuselage. Install the fuel tank
brace at the rear of the tank. Use the 13" tie wraps to
secure the fuel tank to the tank floor.

Step 11



Connect two 12" pieces of fuel tubing for pickup and vent
tubes. Attach the green tubing to the pickup, the red to the
vent.

Step 12



Make the proper connections to the engine, using the
engine manufacturer’s instructions.

Note: Connect the pressure line to the muffler
once the cowl has been trimmed and fitted.

Note: Before installing the fuel tank, look at
the tubes of the tank to determine which is the
vent and which is the clunk line.

22

Section 7A – Rudder Servo Installation: Pull-pull

Required Parts

• Fuselage assembly • Cable

• 8-32 flange nut (2) • 4-40 locknut (2)

• Molded swivel link (2) • 4-40 ball link (2)

• Threaded cable end (4)

• 8-32 x 4" control horn screw

• 4-40 x 1/2" socket head screw (2)

Required Tools and Adhesives

• Threadlock • Ruler

• Hangar 9 3D XL Full Servo Arm 4-40:JR (HAN3576)

The rudder requires a minimum of 120
ounce inch of servo torque. In the prototype
ShowTime we used JR8411SA servos with
excellent results. Using servos with less torque
could result in blowback.

The ShowTime has two options for mounting
the rudder servo. For lighter engines a pull­pull system is used. For heavier engines a tail­mounted servo is used. Use the appropriate
servo location based on your engine selection.

 

Cut the cable into two equal pieces. Prepare one end of
the pull-pull cable using the cable, threaded cable end
and crimp. The cable passes through the crimp, through
the threaded end, then back through the crimp twice.
Pull the excess cable tight and use a crimping tool to
complete the job.

Step 2

Step 1



Slide the 8-32 x 4" control horn screw into the hole in
the rudder. Thread the 8-32 flange nuts onto the screw
from both sides of the rudder. Position the screw so it
is centered in the rudder. Use threadlock on the nuts to
prevent them from loosening during flight.

23

Section 7A – Rudder Servo Installation: Pull-pull

Step 3

 

Screw the molded swivel link onto the 8-32 screw until
the distance from the rudder surface to the top of the
link is 3/4".

Step 4

 

Thread the cable end halfway into the ball link. Remove
the covering from the fuselage for the cable exit. The exit
is located 6" in front of the rudder hinge line, which is
below the hole for the stabilizer anti-rotation pin. Pass the
cable into the fuselage through the opening.

Step 5



Using the screws included with the servo, fasten the servo
in place. You may find it helpful to drill 1/16" pilot holes
before installing the screws.

 

Prepare the rudder servo arm by attaching two 4-40 ball
links using the 4-40 screws and locknuts.

Step 6

24

Section 7A – Rudder Servo Installation: Pull-pull

Step 7

 

Center the rudder servo and place the servo arm onto the
servo. Slide a crimp onto the cable, then a threaded end.
Pass the cable back through the crimp.

Step 8

 

Adjust the position of the threaded end on the cable so
it will thread into the ball end and have slight tension on
the cable to the rudder. It will take some time to get the
position right. Once the position of the end is correct,
pass the cable back through the crimp and secure the
cable. Thread the end into the ball end.

Step 9



Repeat Steps 2 through 8 to assemble and install the
second rudder cable. (Step 5 is only required once.)

Note: The cables will cross inside the fuselage
to get the correct geometry.

Step 10



With the radio on, check the operation of the rudder.
Adjust the cables so when the rudder servo is centered,
the rudder is centered as well. There will be slight tension
on the cables to prevent the rudder from wandering.
Adjustments can be made at the rudder control horn and
at the servo arm. Once adjustments are made, secure the
servo arm to the rudder servo using the screw that came
with the servo.

Note: Check the tension of the rudder cables
before every flying session, as they may
stretch over time.

25

Section 7B – Rudder Servo Installation: Tail Mounted

Required Parts

• Fuselage • 4" rudder linkage

• Molded swivel link • 4-40 ball link

• 4-40 locknut

1

• 8-32 x 2

/4" control horn screw (1)

• 4-40 x 1/2" socket head screw (2)

Required Tools and Adhesives

• Drill • Drill bit: 1/16"

• Dental floss or string

• 24" Servo Extensions (JRPA102)

• Hangar 9 3D XL 1/2 Servo Arm 4-40:JR (HAN3578)

The rudder requires a minimum of 120
ounce inch of servo torque. In the prototype
ShowTimes we used JR® 8411SA servos with
excellent results. Using servos with less torque
could result in blowback.

The ShowTime has two options for mounting
the rudder servo. For lighter engines a pull­pull system is used. For heavier engines a tail­mounted servo is used. Use the appropriate
servo location based on your engine selection.
When installing the Saito 1.00 we used the tail
mounted servo.

Step 3



Using the screws included with the servos, fasten the
servos in place. You may find it helpful to drill a 1/16"
pilot hole before installing the screws.

Step 4



Mix a small amount of 30-minute epoxy and lightly coat

1

the inside of the hole in the rudder and the 8-32 x 2

/4"
control horn screw. Slide the screw into the hole from side
opposite of the rudder servo. Wipe away any excess epoxy
on the wing and screw with rubbing alcohol and a paper
towel. Screw the 8-32 flange nut in place as shown. Allow
the epoxy to fully cure.

Step 1



Install a 24" servo extension onto the rudder servo.
Either tie the servo leads together, using a commercially
available connector, or use unwaxed dental floss to
secure the extension to prevent it from coming loose
during flight.

Step 2



Remove the covering from the fuselage for the rudder
servo location. Install the servo in the fuselage tail section
with the output shaft to the front as shown in the photo.

26

Step 5



Screw the molded swivel link onto the 8-32 screw until
the distance from the rudder surface to the top of the
link is 3/4".

Section 7B – Rudder Servo Installation: Tail Mounted

Step 6



Remove the stock servo arms from the rudder servo
and replace it with a Hangar 9 3D XL 1/2 Servo Arm
4-40: JR. The arm faces down as shown. Be sure to use a
drop of threadlock on the servo arm screw if using
metal-geared servos.

Step 7



Use the included 4-40 screws and nuts to attach the ball
link to the outer hole in the arm. The correct sequence
is 4-40 screw, ball link, servo arm, and 4-40 locknut. Be
sure to use threadlock.

Step 8



Screw a 4-40 ball link 5 to 6 turns onto a 5" rudder
linkage. Screw the opposite end of the linkage into the
swivel control horn on the rudder. Adjust the linkage
length until the hole in the ball link lines up with the outer
hole in the servo arm when the rudder is neutral and the
servo arm is centered.

27

Section 8 – Tail Wheel Installation

Required Parts

• Fuselage • Tail wheel spring (2)

• Tail wheel assembly

• #4 x 5/8" socket head wood screw (2)

Required Tools and Adhesives

• Drill • Drill bit: 5/64"

• Felt-tipped pen

Step 1



Position the tail wheel in place as shown, centered on
the rear of the fuselage. Using a felt-tipped pen, mark
the positions for the mounting screws through the
tail wheel bracket.

Step 3



Use two #4 x 5/8" sheet metal screws to secure the tail
wheel bracket in place. A hardwood plate is positioned
in the rear of the fuselage, allowing these screws to
be firmly tightened.

Hint: Remove the screws and wick thin CA
into the holes to strengthen the threads. When
dry, reinstall the screws.

Step 2



Remove the bracket and drill 5/64" pilot holes at the
previously marked positions.

Step 4



1

The rudder has a hard point 5
line. Bend the springs so there is tension when attached to
the tiller arm and the hard point in the rudder.

/4" back from the hinge

28

Section 9 – Radio Installation

Required Parts

• Fuselage • Pushrod keeper

Required Tools and Adhesives

• Velcro straps

Step 1



Wrap the receiver battery and receiver in 1/4" foam. Attach
the receiver and battery to the battery tray using Velcro
straps to secure the receiver. Route the receiver antenna
through the installed antenna tube.

Step 3



Mount the throttle servo using the hardware provided with
the servo. Plug the servo into the receiver and attach the
servo arm to the throttle servo.

Step 4



Move the servo to the throttle open position using the
radio system. Manually move the throttle arm on the
carburetor to the open position. Mark the pushrod where it
crosses the servo arm. Make a 90-degree bend in the wire
and install it into the servo arm.

Step 2



Mount the receiver switch in a convenient location in the
side of the fuselage. Plug the rudder and elevator servo
leads into the receiver, as well as the switch harness.

Note: A piece of plywood has been supplied
to help in mounting the receiver and receiver
battery. The final location of these items can
be located differently to achieve the correct
center of gravity.

Step 5



Check the movement of the throttle to verify there is no
binding at either low or high throttle. If there is, make
the necessary adjustment to eliminate any binding.
Secure the pushrod using a pushrod keeper when all
adjustments are complete.

29

Section 10 – Cowling Installation

Required Parts

• Fuselage assembly • Cowling

• #4 washer (4) • 1/4" fuel tube (4)

• 4-40 x 1" socket head screw (4)

Required Tools and Adhesives

• Rotary tool with sanding drum

1

• 2

/2" spinner and adapters

Step 1



Use cardstock to indicate the location of the engine,
needle valve, firewall and any other engine-related items
that will need to be accessed with the cowling on.

Step 3



Remove the cowl and remove the necessary material to
allow access to items such as needle valves, glow plugs,
cut-off switches, mufflers, etc. Also add two openings to
allow for airflow through the cowling for cooling.

Note: Start by removing only a little material
at a time. You can always make the holes
bigger as you work. Work until the cowl fits
nicely over the engine.

Step 2



Attach the cowling onto the fuselage using four
4-40 x 1" socket head screws, four #4 washers and four
pieces of 1/4" long fuel tubing. Transfer the positions from
the cardstock onto the cowling.

Step 4



Install the propeller and spinner to complete the
cowling installation.

30

Section 11 – Final Assembly

Required Parts

• Hatch • Canopy

• 4-40 x 1/2" screw (4) • #4 washer (4)

• Decals • Pilot figure

• Side force generator (2) • #2 x 1/4" screw (4)

Required Tools and Adhesives

• Hex wrench: 3/32" • Shoo Goo

• Formula 560-canopy glue • Masking tape

Step 1



Position the canopy onto the canopy hatch. Trace around
the canopy and onto the hatch using a felt-tipped pen.

Step 3



Apply a bead of RCZ56 Canopy Glue (ZINJ5007) around
the inside edge of the canopy. Position the canopy onto
the hatch. Use tape to hold the canopy secure until the
glue fully cures.

Step 4



If you are not planning on using the side force generators,
secure the side force generator plugs to the wing using
#2 x 1/4" screws.

Step 2



Lightly sand the inside edge of the canopy and
slightly inside the line drawn on the hatch using
medium sandpaper.

31

Section 11 – Final Assembly

Step 5



To install the side force generators, first remove the
plugs. Slide the side force generators partially into
the slot in the wing. When the stud is visible, install
the thumbscrew to pull the upper and lower side force
generators into position.

Note: The SFG's can be removed in a few
seconds. Try your ShowTime with and
without to decide which setup suits your
flying style best.

Step 6



Apply the decals to customize your ShowTime.

Flying Information

For detailed information on setting up and flying the ShowTime 4D 90 by Mike McConville, go to www.hangar-9.com.

32

Balancing the Model

Correctly balancing an aerobatic model is critical
to its performance and flight characteristics. Checking
the balance on large-scale models is best done with
two people.

Step 1



7

Measure back 7

/16" from the leading edge at the root
rib and mark the location on the bottom of both wing
panels with a felt-tipped pen. This is the recommended
center of gravity (CG).

Control Throws

Aileron (Measured at inboard end of aileron)

7

Low 2" (22°) Up 1

3

High 3

/4" (45°) Up 3 5/8" (43°) Down

Elevator (Measured at trailing edge)

Low 5/8" (9°) Up 3/4" (11°) Down

1

High 3

/8" (45°) Up 4 1/2" (50°) Down

/8" (21°) Down

Step 2



Fully assemble the model. With the airplane upright, lift
the airplane with your index fingers to find the balance
point. The balance point (CG) should be at the marks
made on the bottom of the wing. If not, move the receiver
battery, receiver, or add the necessary weight to the nose
or tail to obtain the correct balance.

Rudder (Measured at counterbalance)

5

Low 1
High 2

/8" (30°) Right 1 5/8" (30°) Left

1

/2" (45°) Right 2 1/2" (45°) Left

Preflight at the Field

Range Test Your Radio

Step 1



Before going to the field, be sure that your batteries
are fully charged, per the instructions included with
your radio. Charge both the transmitter and receiver
pack for your airplane. Use the recommended charger
supplied with your particular radio system, following the
instructions provided with the radio. In most cases the
radio should be charged the night before going out flying.

Step 2



Before each flying session, be sure to range check your
radio. See your radio manual for the recommended
range and instructions for your radio system. Each radio
manufacturer specifies different procedures for their radio
systems. If using a gasoline engine, check the range first
with the engine not running and note the distance. Next,
start the engine. With the model securely anchored, check
the range again. The range test should not be significantly
affected. If it is, don’t attempt to fly! Have your radio
equipment checked out by the manufacturer.

Step 3



Double-check that all controls (aileron, elevator, rudder
and throttle) move in the correct direction.

Step 4



Check the radio installation and make sure all the
control surfaces are moving correctly (i.e. the correct
direction and with the recommended throws). Test
run the engine and make sure it transitions smoothly
from idle to full throttle and back. Also ensure the engine
is tuned according to the manufacturer’s instructions,
and it will run consistently and constantly at full throttle
when adjusted.

Check all the control horns, servo horns, and clevises to
make sure they are secure and in good condition. Replace
any items that would be considered questionable. Failure
of any of these components in flight would mean the loss
of your aircraft.

33

2005 Official AMA

National Model Aircraft Safety Code

GENERAL

1) I will not fly my model aircraft in sanctioned
events, air shows or model flying demonstrations until
it has been proven to be airworthy by having been
previously, successfully flight tested.

2) I will not fly my model higher than approximately
400 feet within 3 miles of an airport without notifying
the airport operator. I will give right-of-way and avoid
flying in the proximity of full-scale aircraft. Where
necessary, an observer shall be utilized to supervise
flying to avoid having models fly in the proximity of
full-scale aircraft.

3) Where established, I will abide by the safety rules
for the flying site I use, and I will not willfully 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 will not fly my model unless it is identified with
my name and address or AMA number, on or in the
model. (This does not apply to models while being
flown indoors.)

6) I will not operate models with metal-bladed
propellers or with gaseous boosts, in which gases
other than air enter their internal combustion
engine(s); nor will I operate models with extremely
hazardous fuels such as those containing
tetranitromethane or hydrazine.

7) I will not operate models with pyrotechnics (any
device that explodes, burns, or propels a projectile
of any kind) including, but not limited to, rockets,
explosive bombs dropped from models, smoke
bombs, all explosive gases (such as hydrogen-filled
balloons), or ground mounted devices launching a
projectile. The only exceptions permitted are rockets
flown in accordance with the National Model Rocketry
Safety Code or those permanently attached (as per
JATO use); also those items authorized for Air Show
Team use as defined by AST Advisory Committee
(document available from AMA HQ). In any case,
models using rocket motors as a primary means of
propulsion are limited to a maximum weight of 3.3
pounds and a G series motor. (A model aircraft is
defined as an aircraft with or without engine, not able
to carry a human being.)

8) I will not consume alcoholic beverages prior to,
nor during, participation in any model operations.

9) Children under 6 years old are only allowed
on the flight line as a pilot or while receiving
flight instruction.

RADIO CONTROL

1) I will have completed a successful radio equipment
ground range check before the first flight of a new or
repaired model.

2) I will not fly my model aircraft in the presence
of spectators until I become a qualified flier, unless
assisted by an experienced helper.

3) At all flying sites a straight or curved line(s) must
be established in front of which all flying takes place
with the other side for spectators. Only personnel
involved with flying the aircraft are allowed at or in
the front of the flight line. Intentional flying behind the
flight line is prohibited.

4) I will operate my model using only radio control
frequencies currently allowed by the Federal
Communications Commission. (Only properly
licensed Amateurs are authorized to operate
equipment on Amateur Band frequencies.)

34

2005 Official AMA

National Model Aircraft Safety Code

5) Flying sites separated by three miles or more
are considered safe from site-to site interference,
even when both sites use the same frequencies. Any
circumstances under three miles separation require
a frequency management arrangement, which may
be either an allocation of specific frequencies for
each site or testing to determine that freedom from
interference 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 AMA Chartered Clubs, (2) AMA clubs and
individual AMA members not associated with AMA
Clubs, or (3) two or more individual AMA members.

6) For Combat, distance between combat engagement
line and spectator line will be 500 feet per cubic
inch of engine displacement. (Example: .40 engine
= 200 feet.); electric motors will be based on
equivalent combustion engine size. Additional safety
requirements will be per the RC Combat section of the
current Competition Regulations.

7) At air shows or model flying demonstrations, a
single straight line must be established, one side of
which is for flying, with the other side for spectators.

8) With the exception of events flown under AMA
Competition rules, after launch, except for pilots or
helpers being used, no powered model may be flown
closer than 25 feet to any person.

9) Under no circumstances may a pilot or other
person touch a powered model in flight.

Organized RC Racing Event

10) An RC racing event, whether or not an AMA Rule
Book event, is one in which model aircraft compete
in flight over a prescribed course with the objective of
finishing the course faster to determine the winner.

A. In every organized racing event in which
contestants, callers and officials are on the course:

1. All officials, callers and contestants must properly
wear helmets, which are OSHA, DOT, ANSI, SNELL or
NOCSAE approved or comparable standard while on
the racecourse.

2. All officials will be off the course except for the
starter and their assistant.

3.”On the course” is defined to mean any area beyond
the pilot/staging area where actual flying takes place.

B. I will not fly my model aircraft in any organized
racing event which does not comply with paragraph A
above or which allows models over 20 pounds unless
that competition event is AMA sanctioned.

C. Distance from the pylon to the nearest spectator
(line) will be in accordance with the current
Competition Regulations under the RC Pylon Racing
section for the specific event pending two or three
pylon course layout.

11) RC night flying is limited to low-performance
models (less than 100 mph). The models must be
equipped with a lighting system that clearly defines
the aircraft’s attitude at all times.

35

7566

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© 2005 Horizon Hobby, Inc.

4105 Fieldstone Road

Champaign, Illinois 61822

[phone]

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