Rainspout Sailboat

  1. Taper the stern (back of boat) with a knife in a sawing motion, but with straight sides.
  2. Then round off hull bottom with a sanding block using medium (#80 - 100) garnet paper backed with a block 2 1/2 x 4" any thickness. Make many strokes, rolling the hull to get a round smooth shape. Any gouging of styrofoam can be repaired with spackle.
  1. Sand the bottom front corner round with garnet paper.
  2. Use white glue to install it.
  1. Point one end of each by twisting and rubbing over garnet paper.
  2. Install mast by twisting into the styrofoam hull about 2 inches from the bow.
  1. Cut a slanted slot about 3/4 inch from top of mast for the sail to rest into or use making tape to attach the sail.
  1. The syrofoam must be sealed before painting with a rubber base water soluble paint (like wall paint).
  2. Then you can use any paint medium for a gloss finish.
  1. The Rainspout Sailboat sails best if the air current is directly astern.
  2. Hold a string into the air to determine the direction of the air.
  3. If people stand too close along the rainspouts they will affect the air flow.
  4. Indoors the sailing contest can be a blowing event.
  5. Outdoors the boat will sail with very little wind.
  6. Another sailing variation is to issue the contestant a full sheet of newspaper and let him fold it into a fan to blow the boat.
  7. Use masking tape to fasten the sail to the deck if you want to angle the sail setting to help the boat stay of course.
  8. Fill the rainspouts with water deep enough to clear rudder by 1/2 inch.
  1. Use tow standard ten foot length rainspouts, or better yet, use two 4 inch half-round rolled edges, rainspouts. (acquired at sheet metal shops)
  2. Solder on standard ends or seal ends on with putty.
  3. Use two card tables on a level surface to hold the two rainspouts for racing.
  4. For outdoor races you will need legs that adjust for irregular surfaces.