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13.

INSTALL ALL CONTROL SURFACES AND

CONTROL HORNS 

Flex the hinges back and forth a few times and 

then glue the hinges into the  rudder and fin slots; at the 
same time glue the tiller arm of the tail wheel into the
rudder leading edge. Lightly sand both surfaces of the
hinges, put epoxy

into each hinge slot and

place the hinge in place. Use

2-56

screws and backplate 

and attach the  nylon horn to the rudder over the tail wheel
tiller arm positionfor extra support. Glue the elevator joiner 
wire

to the elevators. Glue the hinges to the elevators and 

stabilizer in the same  manner as  above. Attach the nylon 
elevator horn and backplate to the bottom of the right 
elevator with  2-56 screws. Glue the aileron torque arms 
into the ailerons as you glue the hinges into the ailerons 
and wing trailing edge.

14.

INSTALL THE CANOPY

Cut the canopy on the cut lines scribed in the

plastic. You can dye the canopy using Rit dye.  Follow the 
instructions on the box. Remove the canopy from the dye
when the desired tint is achieved. Glue the canopy to the

fuselage with cyanoacrylate glue. Seal the edge with strip-
ing tape.

15.

ASSEMBLE THE WHEEL PANTS

Cut and trim the wheel pant halves on their

parting lines that you find on the inside of the pants. You
can score this line with an X-Acto knife and break on the
line or simply cut on the line with a knife. 

Sand the edges of the wheel pants smooth. An

easy way to

do this is to lay your sandpaper down on a

flat surface and move the pants over the sandpaper. This
way you are assured of a straight, flat edge when you
finish.

Cut a starter hole in one half of each pant in

the area of the wheel opening to make it easier to cut out
the opening later after the  halves are glued together. Cut
the starter hole at the join line. Using cyanoacrylate (in-
stant glue), join the two halves together. Note that there 

is a right and a left half to the wheel pant. Make sure you
have a good fit before you glue the two halves together.

When the halves are joined, sand lightly along the join

lineon the outside of the pant to get a smooth appearance. 

Use your wheel and measure and mark the 

area to be cut out of the pant for the wheel opening. Cut 
out this area.

Find the tape locations on the insideof the pant

in Figure

1.

Use 60-100 coarse sandpaper and sand the

areas where you will put the tape. 

Reinforce the inside of the wheel pants with

fiberglass tape. Cut the tape into one inch squares. You
should have eight pieces of tape when you finish cutting. 
Use 5 minute epoxy and piece of tape at  each of the
places you sanded before. Let the tape hang out of the

wheel opening. Cut the excess 

off when the epoxy isdry.

23

TAPE

-AXLE

HO

L

E

Figure 1

16.

MOUNT THE WHEEL PANTS AND WHEELS

Mark the position of the axle hole on the innei

side of each wheel pant. Drill a clearance hole at this

location for your gear wire or axle bolt. See Figure

1.

Mark the  positionof the brass plate on the gear

Do this by temporarily placing the wheel pant on the gear
Position the  pant so it does not touch the ground and is
level or in the correct position for your model. Mark the
position of the brass plate on the gear and on the outside

of the pant. Remove the wheel pant! Solder the brass
plate to the gear using Sta-Brite silver solder. Position and
solder the other brass plate in the same manner.

Posiiton the

1 / 8

plywood plate on the inside

of the wheel pant opposite the brass plate on the gear,
Temporarily put the wheel pant back on the gear to find
this position. The ply plate is used as a backup plate for
the brass plate 

so do a good job of lining these two plates

up. When you have the correct positions for the ply plates,
use 5 minute epoxy and glue them to the inside of the

wheel pants. Let the ply plates dry.

Drill the  axle hole through the ply plates in the 

pants.

Using the  brass plate as a guide, drill two pilot

holes through the wheel pants and the ply back up plate

for the

#2

x

3/8”

screws.

Trial fit the wheel pant assembly to the gear by

attaching the screws provided, wheels and wheel collars 

to hold the wheels to the gear. If all is in the correct position, 

remove the assembly from the gear. See Figure 

2.

LANDING GEAR

WHEEL PANT

WHEEL COLLARS

BRASS PLATE

WHEEL

Figure

2

Paint the  wheel  pants.  First, sand lightly with 

wet/dry

320-400

sandpaper but use it dry. Use K&B primer

or automotive primer. Sand the  primer after it is dry. You
need only to sand the primer lightly. Put on the final coat 
of paint. Spraying works the best for the final coat but 
brushing the paint will give you good results also. 

Summary of Contents for Sportster Bipe 40

Page 1: ...d fuselage Please read through this step by step instruction manual before you start building so you will have an overall idea of the construction steps and to avoid mistakes Use the plan and parts li...

Page 2: ...f the rudder leading edge for elevator joiner wire clearance Wait to shape the leading edge until the hole is drilled for the tail wheel tiller arm later 3 GLUE STAB PARTSTOGETHER SANDTHE STAB AND ELE...

Page 3: ...RST BEFORE YOU START BUILDING THE WING PANELS It isvery important that you buildstraight wings with nowarps or twists or youwill get someflying characteristics you didn t expect Bevery carefulwhen you...

Page 4: ...s to the building board glue the ribs to the spar Line up the lines on the ribs with the line on the leading edge Glue the ribs to the leading edge Line up the trailing edge line to the rib lines and...

Page 5: ...and cut pieces to fit along the length of the cabane holders as shown on the plan Glue this 1 4 tri to the sheeting and to the cabane holder Also cut tri stock to fit on either side of the three cent...

Page 6: ...to the spar Use the 1 4 x 7 8 x 3 wing hold down block as a spacer for location of ribs 1 and 2 Note These hold downs are the same size as the ones that glue into the fuselage later Do not glue the h...

Page 7: ...he lower end of the wing tips top and bottom Sand this filler to shape later after hinging and installing the ailerons Sand the leading edge to the rounded shape shown on the plans Cut off thesparsand...

Page 8: ...the panels Use a straight edge to make sure the leading edge of the wing is straight Block up the wing 7 8 at the center and glue the panels together using slow set epoxy See the drawing on the plan R...

Page 9: ...SIDES Mark the inside of the fuselage sides right and left Cut out part of the wing saddle area at the rear as shown on the plan STOP If you plan to install a 4 cycle engine read and follow the instr...

Page 10: ...Make push rod braces from scrap 1 8 x 3 x 36 left over from the doubler stock in the step you just did The widths of the braces are the same as that of each of the formers The braces will be installe...

Page 11: ...9 GLUE LEFT FUSELAGE SIDE TO THE BUL KHEADS Align the fuselage sidelbulkhead assembly upside down over the top view of the plans Make sure the flat side is resting flat on the building board and that...

Page 12: ...e should butt up to the doubler Pin the deck base over the plans to your work surface Mark the location of Formers 4 5 and 6 Check the fit of the formers and glue them to the deck base making sure the...

Page 13: ...en where the tail wheel strut mounting tab will glue later glue the fuse sides together at the tail 17 GLUE PUSHROD BRACESTO FORMERS GLUE PUSHROD HOUSINGSTO BRACES Using the pushrod housings as guides...

Page 14: ...o thefuselage Thefuselage is not shown aligned to the plans in the photo 21 ADD THE BALSA BOTTOM SHEETING With all pins removedfrom the insideof thefuselage cross grain sheet the bottom rear of the fu...

Page 15: ...t glue on the hoodtop yet Glue former 3A 3B tothefuselageatthe rearof the cockpitontopof bulkhead 3 25 GLUE IN THE COCKPIT FLOOR Glueinthe balsa cockpit floor between the dash and former 3A 3B on the...

Page 16: ...and cuts down on vibration After the wing is covered later you will attach the top wing to the cabanes with the aluminum plates and the 2 x 3 8 screws provided Ttie plates should be flush with the wi...

Page 17: ...ttle difficult to sand in that area after the hood top is glued on Glue the hood top in place Trim the hood sides at the cockpit as shown on the plans 33 ADDFORMER6A 6B Pin the stabilizer in place so...

Page 18: ...ce Using 5 minute glue the nose side blocks in place Remove excess epoxy at the chin blockjoint Carve and rough sand the hood top hood sides and chin block to the shape of the nose side pieces The nex...

Page 19: ...these pieces so they glue to the firewall and nosefiller block Now sand and carve the nose of the fuselage to the shape of the spinner ring 41 DRILL FUEL LINE HOLES AND A DRAIN HOLE Drill the holes in...

Page 20: ...eces are used to anchor the covering material later 45 ADD TAIL WHEEL STRUT FINISH RUDDER Glue the tail wheel strut in place as shown on the plans Use 5 minute and clamp the tail until dry Add the las...

Page 21: ...to install the wing fairings by drawing lines on the bottom of the wing even with the fuselage sides Cut the fairings to width Sand to shape by placing sandpaper on the wing and working the fairings...

Page 22: ...s to the ailerontorque rod arms with the nylonconnectors wheel collars and screws provided and clevises of your choice This end of the linkage is therefore adjustable 9 INSTALLTHE MAIN GEAR Placetheso...

Page 23: ...ning Cut out this area Findthe tape locationson the insideof the pant in Figure 1 Use 60 100 coarse sandpaper and sand the areas where you will put the tape Reinforce the inside of the wheel pants wit...

Page 24: ...Cycle combination is unbeatable Four cycle engines offer many benefits theirquiet realistic sound is pleasingto modelers and non mod elers alike Hightorque allows the useof highpitchor largediameter p...

Page 25: ...MOUNT...

Page 26: ...HAYES AL 60...

Page 27: ...washer Measure back from this straight edge to the back of the mount This is distance B Refer to the drawings and the chart shown here We are measuring this distance so we can determine how far back...

Page 28: ...extend past Bulkhead 3 Carefully trim the doublers to the fuse side shape 11 GLUE FIREWALL IN CORRECTED POSITION Draw the corrected bulkhead 1 positionon the top view of the plans Next still working o...

Page 29: ...1 2 propeller Four cycles like flywheel weight from large diameter props This made the plane land a little faster than with the 11 x 6 The prop we used was a prop designed for 60 size pattern engines...

Page 30: ...2x3 1 4 Wing Plate SB40A02 1 Sub Pack Fuselageand Wing Parts SB4OF34 1 Balsa118x3 4x3 FalsaBulkhead NoseFillerBlock SS4OF16 1 Balsa2 1 4x2 1 4x 1 2 SS4OF18 1 Balsa1 4 Former1A SS4OF19 1 Balsa1 4 Forme...

Page 31: ...I Use trim MonoKote and these letters to create your trim scheme on your Sportster...

Page 32: ...e sketch Measure Throw Here I The best way to balance your Super Sportster is to make a Balancing Stand from a square of 1 4 plywood and two 3 8 dowels Markthe foreand aftlimitsof thebalancerangeon th...

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