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If you are building the 20 or 40 Sports Floats, skip to
“Construction of 20, 40, 60 Floats” in the next column
on this page.

1. On a flat surface covered with wax paper, laminate the

die-cut 1/8" plywood forward and aft spine to one 1/16" die-
cut plywood spine doubler with 6-minute epoxy. Use weights
to hold the pieces together. Hint: Before the epoxy fully
cures, use a #11 blade to remove excess epoxy that gets into
the notches or oozes out from between the laminated pieces.
With Great Planes 6-minute Pro

Epoxy, this can be done

about 10 to 15 minutes after the epoxy has been mixed.

2. Glue the other doubler to the other side of the

assembly with 6-minute epoxy.

1. Since the par ts are smaller, both forward keel

doublers may be laminated to the forward keel at the same
time. Mix up some 6-minute epoxy and apply to one side of
both die-cut 1/16" plywood forward keel doublers. Then
position a doubler on each side of the die-cut 1/8" plywood
forward keel. Hold the pieces together with weights.
Remove the excess epoxy before it fully cures.

1. Trial fit the die-cut 3/32" balsa upper float side,

lower float side and  aft float side. Make adjustments if
necessary. When satisfied with the fit, use thin CA to glue
the three pieces together over a building table covered with

waxed paper. After the CA has cured, use 150-grit
sandpaper and a sanding block to sand both sides of the
float side flat and smooth. Make another float side,
identical to the first.

2. Use thin CA to glue the die-cut balsa forward deck to

the  aft deck. After the CA has cured, sand both sides of
the deck flat and smooth.

NOTE: If your float parts do not match each photo exactly,
it is because these instructions are written for all three
sizes. Regardless of which size Spor t Float you are
building, the forward end of the float deck is the end
that tapers slightly.

1. Drill 1/8" holes through the punch marks in the die-cut

1/8" plywood forward and aft strut mounting plates.

2. With the die-cut 1/8" plywood former doubler F

centered on the die-cut 1/8" plywood former E, align the
bottom edge of the doubler F with the lightening holes in
former E. Glue the pieces together with thin CA.

Framing

CONSTRUCTION OF 20, 40 & 60

Sides and Deck

Forward Keel

Spine

60 FLOATS PREASSEMBLY

6

Содержание Sport Floats

Страница 1: ...be assumed nor accepted for any damage resulting from the use by the user of the final user assembled product By the act of using the user assembled product the user accepts all resulting liability I...

Страница 2: ...andling characteristics on the water and ultra smooth realistic takeoffs Of course the Great Planes Sport Floats will work well with other models too The 20 40 or 60 Sport Floats may be properly assem...

Страница 3: ...M is the Great Planes brand HCA is the Hobbico brand TOP is Top Flite IMPORTANT For your model to handle properly on the water and in the air the Sport Floats must be built on a flat surface Also a re...

Страница 4: ...4 DIE CUT PATTERNS 60 SIZE...

Страница 5: ...5 DIE CUT PATTERNS 20 SIZE 40 SIZE...

Страница 6: ...re it fully cures 1 Trial fit the die cut 3 32 balsa upper float side lower float side and aft float side Make adjustments if necessary When satisfied with the fit use thin CA to glue the three pieces...

Страница 7: ...eck from former C forward 5 Lay waxed paper over your flat building board and position all the formers except A and I on the deck Make sure the notches in the formers fit all the way down to the deck...

Страница 8: ...ng photo 3 Cut a 3 16 x 3 16 forward stringer to fit in the notches of formers E to A do not attempt to bend the stringer down to the notches in former A at this time Use a pen to make marks every 1 2...

Страница 9: ...the center and should be placed so it covers half of the keel Make adjustments if necessary and bevel the edges of the aft bottom sheets that contact each other in the center Note An embossed arrow i...

Страница 10: ...d arrows to aid in final alignment 4 Referring to the sketch rough sand the entire float with a sanding block and 150 grit sandpaper blending the sides to the deck and the bottoms to the side Sand all...

Страница 11: ...rototype 60 floats mounted on our Great Planes J 3 Cub 60 are covered with MonoKote film and were really put to the test Following are instructions for both covering methods 1 Seal all seams except ar...

Страница 12: ...ing you may do the top and sides first then the bottom If you work quickly you can save the paint brush by cleaning it with alcohol before the resin begins to thicken 7 Carefully sand the entire float...

Страница 13: ...this yields a slight positive wing incidence in relation to the floats and the airplane will tend to rise off the water at the correct time If you have a model with a symmetrical wing the wing incide...

Страница 14: ...solder 1 Match the shorter front strut with the front cross brace and the taller rear strut with the rear cross brace The matching struts and cross braces are the ones that fit together the best Note...

Страница 15: ...hem with a 12 or 13 64 drill bit Mount the bearings to the floats with 4 40 x 1 2 screws 2 Temporarily join the floats to the struts by inserting them into the bearing mounts Use a felt tip pen to mar...

Страница 16: ...per bearing mount placement 2 Temporarily join the floats to the struts with the 5 32 wheel collars The following instructions show the Great Planes J 3 Cub 20 and 40 Use the instructions sketches and...

Страница 17: ...n the nylon swivel 1 8 past the end 4 Loosely install the rudder on the right float with two flat straps two 1 8 hump straps and four 2 x 3 8 sheet metal screws Adjust the bottom of the rudder bracket...

Страница 18: ...de tube to the aft strut with a nylon tie 8 Drill a 1 16 hole and secure the cable guide tube to the mount plate with one of the cut off hump straps and 2 x 3 8 sheet metal screws 20 40 Floats only Af...

Страница 19: ...rewing the nylon clevis at either end of the cable 8 Mount another 1 8 plywood mount plate and the other cut hump strap near the rear of the guide tube 9 Test the actuation of the water rudder on the...

Страница 20: ...g around in the water to learn the handling characteristics and see if you have built in enough throw on the water rudder Make adjustments if required During taxiing hold up elevator to keep the nose...

Страница 21: ......

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