background image

WIRE

LANDING GEAR

#2 SCREW

BRASS PLATE

PLYWOOD PLATE

WHEEL PANT

WHEEL COLLARS

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.

23. D EXTEND THE RADIO ANTENNA

Run the antenna out of the radio compart-

ment of the fuselage and attach it to the front of the
fin. Do NOT cut the antenna wire'

25. D RANGE CHECK YOUR RADIO SYSTEM,

CHECK THE CENTER OF GRAVITY,

RECHECK ALL ALIGNMENTS

Your model should balance at the point

shown on the plan If it doesn't, move the battery
and/or receiver around until the model balances at
the point shown If additional balance weight is
needed, add lead weights to the nose or tail to get
proper balance Range check your radio at your flying
site as per your manufacturer's recommendations
Recheck your wing and stab alignments Make sure
the rudder is 90 degrees to the fuselage Check to see

that all hardware is secure and that all equipment is

in good condition.

26. D TRIM THE MODEL

Make your first flights, with the help of an

experienced modeler/flyer if this is your first model
The model may need some trim changes or ad-
justments to the control surfaces after the first flight
Adjust the control surfaces at the clevises until the
model flies correctly.

NOTE: See page 42 for balancing instructions.

24. D CONNECT ALL LINKAGES (PUSHRODS),

CONTROL SURFACES, CHECK RADIO

OPERATION AND SET THE THROWS

Screw a nylon clevis onto the threaded end of

each pushrod Note: Screw them on all the way
until the threads protrude inside the clevis.
 Cut a
short length of 1/8" diameter plastic tube into 1//4"
pieces Slide half of the these onto each of the pushrod

wires and space them out evenly Temporarily insert
the pushrods into the tubes Adjust the spacers so they
will always stay inside the tube If the spacers are not a
tight fit on the pushrod wire, apply a small drop of thin
CA to secure them Attach the clevises to the rudder
and the elevator control surfaces Holding the surfaces
at neutral, mark on the pushrods where they intersect
with the servo horns Remove the pushrods and make
Z-bends at the marks Cut off the excess wire

Remove the servo horns and reinsert the pushrods

Attach the pushrods to the servo horns and reinstall so

that the surfaces are neutral when the servos are
centered

Attach a clevis to the end of the throttle cable

and attach it to the engine throttle arm Attach the other
end of the cable to the throttle servo with a connector of

your choice If your have trike gear, attach a clevis to
the nose gear pushrod and then to the nosegear
steering arm Attach the other end of the pushrod to
the rudder servo on the opposite side of the servo horn
Operation of the rudder servo on the ground will

therefore turn the nose gear and steer the airplane

The servos and linkages should not bind or interfere

with each other Set the control surface throws as

shown on the plan

GOOD LUCK AND GOOD FLYING!

26

Содержание Super Sportster 20

Страница 1: ...anufacturer s instructions concerning the use of this covering material Please read through this step by step instruction book before you start building so you will get an overall idea of the construc...

Страница 2: ...wheel strut tab For tri cycle gear the third hinge should be near the bottom of the rudder Check the plans Relieve cut out the leading edge of the rudder for elevator joiner wire clearance Shape the r...

Страница 3: ...NELS It is very important that you build a straight wing with no warps or twists or you will get some flying characteristics you didn t expect Be very careful when you align the ribs spars leading edg...

Страница 4: ...he building shim see size below For the 20 and 60 size align the trailing edge to the top of the shim as shown in the drawing below Use waxed paper in between the shim and the trailing edge and pin th...

Страница 5: ...lding board and check all the glue joints Add more glue if necessary Now remount the wing upside down reversing the trailing edge shim on your work surface 8 D PREPARE THE MAIN LANDING GEAR BLOCK Glue...

Страница 6: ...balsa so foreign matter does not get into the wing Go to step 13 for the 20 size model 12 D 40 and 60 SIZE ONLY GLUE THE HARDWOOD HOLD DOWN PLATE AND BALSA FILLERS TO THE WING PANEL Add the maple win...

Страница 7: ...om fit all four supports and glue them in place Use 1 4 scrap and make and glue the aileron filler piece Glue it to the inboard side of the wing tip Add filler pieces to the rear end of the wing tip t...

Страница 8: ...torque rod arms The center trailing edge pieces for the 60 size model are balsa Cut a groove in the block for torque rod clearance 20 D GLUE THE CENTER TRAILING EDGE PIECES TO THE WING PANELS JOINING...

Страница 9: ...piece of cloth and polyester resin or epoxy Sand the center section when dry Apply a second coat of resin or epoxy if necessary IMPORTANT Omitting this step will result in a wing fail ure during fligh...

Страница 10: ...to the tank com partment Drill the hole for the throttle linkage about 1 4 from the top corner of the bulkhead left or right depending on your engine For tricycle gear mark and drill the hole for the...

Страница 11: ...position of the balsa dash be tween 2 and 3 on the fuselage sides Bulkhead 2 in the 20 size is located 1 8 forward of the wing saddle opening to allow for the dowel jig 7 D DRILL PUSHROD EXIT HOLES M...

Страница 12: ...D GLUE LEFT FUSELAGE SIDE TO BULKHEADS Align the fuselage side bulkhead assembly upside down over the top view of the plans Make sure the flat side is resting flat on the building board and that the...

Страница 13: ...ners to clear the doubler as shown on the plans The deck base should butt up to bulkhead 3 Mark the location of formers 4 5 and 6 and pin the deck base to the plans Check the fit of the formers and gl...

Страница 14: ...icycle gear glue the bottom hinge at the tail at this time Use the rudder as a guide to placement late glue glue both elevator and rudder housings in place except at bulkhead 3 This will be glued late...

Страница 15: ...N REAR HOLD DOWN FOR AILERON TORQUE ROD CLEARANCE Align the fuselage over the wing and draw refer ence lines on the wing along both sides of the fuselage Mark the locations to be relieved on the rear...

Страница 16: ...ition to determine the placement of the dash on the fuse side Glue the dash to the fuse sides Do not glue on the hood top yet Glue former 3A 3B to the fuselage at the rear of the cockpit on top of bul...

Страница 17: ...con tour later 30 D SAND THE TOPS OF THE HOOD SIDE PIECES Sand the top of the hood side pieces flush with the top of the formers so the hood top will mate squarely 31 D GLUE ON THE HOOD TOP SAND THE...

Страница 18: ...35 D ADD THE 1 8 x 1 4 STRINGERS Add the 1 8 x 1 4 balsa stringers by gluing them at 6A 6B first checking with a straight edge and then gluing to 5A 4A and 3A 3B 36 D PREPARE AND GLUE IN THE SIDE NOS...

Страница 19: ...pinner backplate and locate the block accordingly When you are sure of the placement glue the crossgrain spinner filler block in place Sand the front of the nose if necessary Glue the ply spinner ring...

Страница 20: ...gers Shaping and sanding is easy if you tack glue scraps of balsa the thickness of the stab and fin to the fuselage Trim the scrap even with the fuse sides and stringer line then tack glue the blocks...

Страница 21: ...he work surface first The reference line should be parallel to the work surface Measure from this line down to the work surface at several points on both sides of the fuselage All the measure ments sh...

Страница 22: ...so gives you the location of the 1 4 holes in bulkhead 2 You drill the wing holes first position the dowels and jig and then drill the holes in the bulkhead after the wing is in position Use the plan...

Страница 23: ...edge piece and rear hold down in the fuselage Remove the wing Redrill the wing with a 13 64 drill for 10 32 bolt clearance Tap the holes in the fuselage hold down for 10 32 bolts with a 10 32 tap Bol...

Страница 24: ...nt the servo as deep into the wing as you can to prevent interference with the other servos Install the threaded wire pushrods with Z bends at the servo Install the nylon swivels onto the the aileron...

Страница 25: ...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 sand paper This way you are assured of a straight flat edge when...

Страница 26: ...ctly NOTE See page 42 for balancing instructions 24 D CONNECT ALL LINKAGES PUSHRODS CONTROL SURFACES CHECK RADIO OPERATION AND SET THE THROWS Screw a nylon clevis onto the threaded end of each pushrod...

Страница 27: ...s difficult to say exactly what the optimum engine size is for your Sportster The old rule of thumb was to choose a 4 cycle engine with 1 1 2 times the 2 cycle displacement for equivalent horsepower...

Страница 28: ...of the engine on the Firewall and center the mount in position The thrust line of the engine should be in the same position as shown on your plan Drill holes and install blind nuts Temporarily instal...

Страница 29: ...measure the backplate depth and add that distance to one of the above measurements depending on which model you are building Distance B length of your 4 cycle engine and mount SPORTSTER 20 B B B SPOR...

Страница 30: ...Your A Move Firewall Back Step 5 Mark the new position of the Firewall on the inside of each Fuselage Side Make sure your line is perfectly parallel to the front of the fuse sides Using the firewall...

Страница 31: ...om make 3 8 balsa nose side blocks as shown in Figure 5 Now follow step 36 in the first part of this book about gluing these side pieces to the fuselage Next if desired add a front bulkhead to the eng...

Страница 32: ...ywheel weight from large diameter props This made the plane land a little faster than with the 11x6 The prop we used was a prop designed for 60 size pattern engines a Max Dailey Radio South propeller...

Страница 33: ...33...

Страница 34: ...34...

Страница 35: ...35...

Страница 36: ...36...

Страница 37: ...37...

Страница 38: ...5 8 x 5 8 LG Gusset Hardwood Grooved 5 8 x 5 8 LG Block Hardwood Grooved 5 8 x 4 LG Block Plywood Shaped 1 16 LG Brace Plywood Shaped 1 16 Spinner Ring Plywood 1 4 x 3 4 x 2 5 8 Hold Down Plywood 1 8...

Страница 39: ...haped 1 4 Elevator WIRES16 2 Threaded Pushrod Wire 16 SS40W07 1 Balsa Shaped 5 8 Wing Fairing SS40W08 1 Balsa 3 8x3 1 2x5 1 2 Wing Fairing SS40W09 1 Balsa Shaped Center Rib SS40W10 2 Balsa Shaped 3 16...

Страница 40: ...AL116 BAL120 CANPY025 EM4070L EM4070R SS246P02 NYLON87 SS60F01 SS60F02 SS60F03 SS60F04 SS60F05 SS60F07 SS60F09 SS60F10 SS40F29 SS40W14 SS60F30 SS60P01 SS60R01 SS60R02 SS60R03 SS60R04 SS60S01 SS60S02 S...

Страница 41: ...Use trim MonoKote and these letters to create your trim scheme on your Sportster 41...

Страница 42: ...ace the airplane upside down on the balancing stand as shown in the sketch empty fuel tank Move the airplane forward or aft on the stand until it balances with the stab level If it balances outside th...

Страница 43: ...PUSHROD LINKAGES 43...

Страница 44: ...the model and fly it only with experienced competent help using common sense and in accordance with all safety standards as set down in the Academy of Model Aeronautics Safety Code It is suggested tha...

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