Cessna 208 Caravan
The ply firewall has blind nuts for the KM40 engine mount and cowl attach. A shim (at left) is placed under the fuselage front to give the right cant angle to the nose section. Fuselage bottom nose gear ply mount and piece F7 are added to lock in the cant angle. The forward fuselage bottom pieces (above) have been added including the 1⁄8-inch ply main gear mount.
lowed by two coats of color dope. However, a wide variety of finishing materials may be used on the cardboard. Coverings, such as Solarfilm, MonoKote and vinyl paper can be used. With any of these, it is recommended that the surface not be doped, which will re- sult in a better bond. Paper tape: All seams, joints and ex- posed edges of the model are covered with strips of gummed paper tape. Obtain a one- inch wide roll from a stationary store. Sim- ply cut a thin strip to length, dip it in water and smooth it over the seam. Construction: Be sure to note the direction
of the corrugations when cutting out the card- board parts. Score and fold cardboard parts as indicated on the plans. Also note that the lower fin has two tabs which fit into slots in F5. Empennage: The fin, rudder, stabilizer and elevators are each made from two pieces of 1⁄8-inch cardboard laminated together cross grain to give 1⁄4-inch thick surfaces. Add a 1⁄8×1⁄4-inch balsa strip to the fin lead- ing edge and round off. Add 1⁄8 × 1⁄4-inch bal- sa strips to the stabilizer leading and trail- ing edges and round off the leading edges. Glue the elevators to the 1⁄4-inch dowel. Add 1⁄8 × 1⁄4-inch balsa strips to the re-
mainder of the elevator leading edge and round off. Seal all raw edges with gummed paper tape. Hinge the elevators to the stabi- lizer with flex hinges at four places. Wing: Make each wing spar from 1⁄4-inch balsa capped with 1⁄4-inch square spruce or basswood strips. Join the two spars together with 1⁄8-inch ply joiners, front and back. The Caravan bottom wing surface has zero dihe- dral so the spars can be built flat on your workbench.
Glue the right spar into the bottom of the right panel. Add all cardboard ribs. Glue a one-ounce weight to the right wing tip.
Full-size plans available through Carstens Bookstore
www.carstensbookstore.com 42
JULY 2013
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