background image

4. Use thick CA to glue on the die-cut 1/8" plywood

transom plate I so the punch marks are visible. Sand the
edges to blend with the sides, top and bottom.

5. Drill a 1/16" hole through each punch mark in the

transom plate on only one of the floats. This is now the
right float to which the rudder will be mounted.

6. Fill any nicks, scratches, or seams with HobbyLite

filler. After the filler has cured, final sand the entire float
with a sanding block and 220-grit, then 320-grit, then 400-
grit sandpaper.

There are two ways you can cover your floats. You can use
Top Flite

®

MonoKote

®

covering or fiberglass cloth and resin

with paint. “Glassing” seals the wood grain and is required
if you wish to paint the floats. This can be an involved,
messy project but yields a highly durable finish. MonoKote
covering is the quicker, easier method and provides a
surprisingly durable finish as well. In fact, our prototype 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 around the nose block) with

1/2" wide strips of MonoKote film. Iron these strips down
with a hot iron for a good seal.

2. Continue to cover the float, in the following sequence:

A. Transom
B. Deck
C. Sides
D. Aft bottom
E. Forward bottom

All pieces should overlap at the nose. Iron the large pieces
of covering down by starting in the center, pulling and
working out to the edges.

3. You can enhance realism by adding panel lines and

rivets with a fine-point indelible pen, creating a propeller
arc warning line (red) from MonoKote covering, and making
the flat black walkways (on right float only) from 400-grit
wet/dry sandpaper.

Apply the glass cloth in this order:

1. Transom
2. Deck and both sides in one piece
3. Aft bottom
4. Forward Bottom

1. Cut a piece of 3/4 oz. (Lightweight) glass cloth 1/2"

larger than the transom all the way around.

Glass Cloth and Resin

MonoKote

®

Covering

Covering Method

COVERING

11

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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