.
General Notes
Cover the plans with wax paper or plastic kitchen wrap to keep the structure from sticking to them. Hold parts in place over the
plans with pins, but do not push the pin
through
the balsa pieces
Use Sig Bond or Sig-Ment for balsa wood joints.
Don't use loose scraps of sandpaper. Always glue it to a block. A 4" piece of 1" x 2" lumber makes a good sanding block.
Fuselage
Build 2 fuselage side frames from 3/32" square at the same time directly over the plans. Separate the two frames with a razor
blade when the cement is dry.
• Build one Bulkhead B5 over the plans and cut 4 additional 3/32" square spacer pieces to match the width of B5. Working
over the top view of the fuselage, cement B5 and the 4 spacers between the side frames. Carefully pull the tail ends of
the sides together and insert the 3/32" square spacers cut to the proper length.
• Crack the sides just in front of B5, pull them together at the nose, and cement B1 in place. Complete the nose structure
as shown on the plans and then thoroughly coat the 4 cracked places with cement. Don't forget the small pieces of 1/16"
square shown on the sides of B2. Sandpaper them to a smooth curve to round out the rear of the cowling.
• Cover the cowling area with the heavy paper provided. Use the pattern from the instruction sheet to cut out the top half.
Cement the paper in place and trim away the overhang. Cut the bottom half to approximate fit and pre-bend it by
carefully shaping it over a round pencil. After the cement is dry and the excess paper is trimmed, sandpaper the front
surface of B1 flat.
• Add the supports for the rear rubber peg and other small fuselage detail.
• If you are inexperienced at covering with Japanese tissue, omit the 1/16" square stringers from the sides and top of the
fuselage. Covering will be much easier and can be done in larger pieces.
Landing Gear
• Sandwich the landing gear wire between the 2 pieces of 1/16" x 3/8" over the pattern on the plans. Before the glue dries
completely, clamp the assembly tightly between two flat surfaces so the wire is actually imbedded in the wood. Cement
the completed assembly into the fuselarge, glueing it thoroughly wherever it touches the framework. Add the 1/16" x 3/8"
reinforcements.
• Make a tailwheel assembly, cement in place, and bind with a few turns of thread.
Noseblock
• First, cement together the Laminating Jig as shown on the plans. Use a pin to pierce holes in two N1s, N2 and the
square cutout from B1. Coat the mating surfaces with cement and slide pieces on the projecting wire of the jig, being
careful not to bend the wire. Let the wire locate the pieces - don't force.
• When the glue has partially set, carefully push a couple of pins into the stack and twist the noseblock off the jig.
Don't let
the assembly dry on the jig.
It may stick there permanently. Plug the nose block into the fuselage while sandpapering
to the finished shape so it will match the cowling perfectly. Enlarge the shaft hole with a nail and cement eyelets in place.
Do not cement the noseblock to the fuselage.
Wheels And Pants
• Laminate the wheels and pants one at a time on the jig, in the same way as you did the noseblock. Sandpaper to tht
finished shape when the glue is dry. Cement the eyelets in the wheels last.
• Complete the landing gear as shown on the plans. Thoroughly cement the 1/16" x 1/4" struts to the landing gear wire and
pants - not to the fuselage. Two wraps of tissue will help hold the struts to the wire.
Page 2 of 9
Sig Cabinaire SIGFF20 Instruction Manual
