Dart 2 (oz3720)

About this Plan

Dart 2. Radio control parasol model. For .19 engines.

Mats Johansson's Dart 2 from Model Builder magazine issue 07-84.

Direct submission to Outerzone.

Update 01/05/2020: Added MB article here (previously listed with oz11767), thanks to BoJo.

Quote: "Dart 2, by Mats Johansson. This construction project for a .19-size, parasol wing, R/C trainer comes to you from Sweden. The Dart 2 is an easy to fly, stable, and strong R/C model plane.

The Dart 2 is a new Swedish trainer for R/C control. It is designed for those modelers who want an airplane that is easy to fly and also is good looking. Dart 2 has been developed and improved during a period of four years. Special characteristics are that it is very easy to fly, robust, and looks like a real aircraft.

FUSELAGE CONSTRUCTION: Start with the two fuselage sides which are constructed of 3/32 balsa (the contour lines are denoted by dark arrows on the plan). Then make the 1/32 plywood reinforcement parts (white arrows). Now, glue these on each fuselage side. See to it that you make one left and one right fuselage side. After that you continue with the 1/8 x 3/8 spruce stringers which you glue into position. Note that the part of the stringer which is attached to the plywood should be edge to edge, while the part of the spruce stringer which is glued directly to the balsa surface should overlap the balsa edge by approximately 5/32 inch. Study the plan carefully when you do this. Also cut out the part of the spruce stringer where the stabilizer should be located.

Proceed with the 3/8 triangular stringers along the lower edge of the sides. Continue by making the bulkheads. Note that the firewall and bulkhead Nos.2 and 3 are of sandwich construction. Also, make the bulkheads A, B, C and D for the detachable hoods. Now, attach the firewall and bulkhead Nos.2 and 3 perpendicularly to one fuselage side. Let the glue dry and then add the other fuselage side. Join the two tail ends and check that the framework is straight. Proceed by attaching bulkheads 4, 5, 6 and 7, and the top stringer between bulkhead 3 and 4, and between 5 and 7.

While everything is drying, cut out the 1/8 plywood reinforcement for the landing gear, and glue the 1/8 x 3/8 spruce pieces into place. Then drill 1/8 inch holes for the landing gear clips through both spruce and plywood. Continue by cutting out the necessary space in the triangular stringers for the landing gear reinforcement. Then, glue this one in place. Now, mount your favorite pushrod cables and also install a tube for the antenna. Then, glue the tailwheel reinforcement of 1/16 plywood in place. Now, cover the underside of the fuse-lage with 3/32 balsa, cross-grain. After that, you attach the turtle deck of 1/16 soft balsa.

Proceed with the two detachable hoods. Please note that bulkheads C and D should have a cover piece of 1/32 plywood. The hood frame consists of two bulkheads and three pieces of 3/16 square balsa stringer. The frames are covered with 1/16 balsa. Make sure that the two hoods fit properly on the fuselage. As the rear hood will keep the cabane strut in position, it's very important that it is correctly mounted to the fuselage (see sketch for details.)

The lock device I use is the one shown in the figure. You will have to make four of these..."

Supplementary file notes

Article.

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