Theta 18 Aerospace Speciality Products Page 2
Parts List - Be sure to check the following list to assure your kit is complete:
1 White Body Tube (A); 1 Red Engine Tube (B); 1 Engine Block (C); 2 Centering Rings (D); 1 Set of
Laser-Cut Balsa Fins (E); 1 Launch Lug (F); 1 Balsa Nose Cone (G); 1 Kevlar® Shock Cord (H); 1
Wooden Craft Stick (I); 1 Metal Screw Eye (J); 1 Wood Dowel (K); 1 Plastic Streamer Material (L).
Tools & Materials - You will need the following to complete your model:
Required: Adhesive (A wood glue, such as Elmer's Carpenters Glue or Titebond can be used for all
steps and is recommended); sandpaper (medium - 220 or 280 grit); pencil; scissors or hobby knife;
tape (cellophane, aka Scotch Tape, and/or masking).
Optional: sandpaper (fine - 320 or 400 grit, extra fine - 500 or 600 grit); sanding sealer (or balsa
fillercoat); thinner (appropriate type for the sanding sealer); small paint brush;
paint (Spray paint,
such as Krylon or Testors is recommended. Be sure not to mix different types or brands of paint
without testing.) - primer; colors as desired & clear;
sanding block; tack cloth.
Assembly Instructions - you can use the checkboxes to mark off each step as
they are completed.
⎕
1
) We’ll start by building the Engine Mount.
Refer to Figure A as needed. Locate the engine tube
(the red tube), the engine block (the smaller spiral-wound paper block that fits inside the engine
tube), the 2 centering rings (the larger spiral-wound rings that fits the outside of the engine tube),
and the
Kevlar® shock cord (which looks like a heavy piece of thread).
Test fit the centering rings over the engine tube - they should be a smooth, yet snug, fit. If needed
use your sandpaper on the inside of the rings so that they fit easily. Set the rings aside for now.
Use your pencil to make two marks on the engine tube 3/8" (0.375") from each end.
Take the
Kevlar® and tie one end firmly around the
middle of the engine tube. If needed, trim any excess
cord at the knot leaving about 1/4" to 1/2". Take one of the centering rings and thread the loose end
of the shock cord through the centering ring and slip the ring just over the end of the engine tube.
Apply a thin layer of glue around the outside of the tube at the 3/8" mark then slip the ring into place
