Yankee Klipper (oz1684)
About this Plan
Yankee Klipper. CL stunt model for Torpedo .29 engine.
Direct submission to Outerzone.
Update 19/01/2021: Added article, thanks to RFJ.
Quote: "An easy to build control-line stunter, the Yankee Klipper is perfect wfor your .29 engine.
Too often after a day's flying, we've heard these post mortems: 'Sure wish I had been less liberal with that weight, it would have pulled out if I had,' or after a split fuselage, 'Sure wish I'd added that plywood under the gear.'
Our Klipper is designed to prevent such flying maladies but not to be a world beater. The primary thought kept in mind was light yet rugged construction, the latter only when needed. Sim-plicity in design is carried right down to the wheel mounting itself. Engines in the Class B displace-ment group should adapt themselves nicely. Work should begin with drawing or photostating the plans to full size. Presentation is half scale, so little difficulty should be encountered on this score.
WING : The wing is built first. Fasten the 1/4 square balsa spar to the full-size plans and cement all the 1/16 balsa ribs in place.' Be sure to place the lead-out ribs on the left half of the wing, as shown. When sufficiently dried, cement the upper spar. The trailing edge is cut from 1/16 x 3 sheet balsa, which will give us two pieces 11/2 wide for the upper and lower sheet trailing edges. Cement these trailing edges in the notches provided and, when dried, remove assembly from plans. As the trailing edge is drying, fasten the 1/4 square leading edge in position.
The wing tip crutches are of 3/16 sheet balsa. Shape them as shown and fasten in place. The 3 bellcrank is mounted to a 1/8 plywood platform, which in turn is cemented between the two center ribs. Add 1/4 square strip balsa both above and below the platform, for added. reinforcement. A square of 1/16 sheet balsa is fastened to the spars just off the center section. As this is left drying, concentrate on the installation of the lead-outs and their guides. The lead-outs are made of .032 wire, soldered to the bellcrank and running through the cut-outs provided for in the ribs. Aluminum or brass tubing can be used for the line guides. Select 1/8 diameter tubing for this particular set-up. Cement securely in place.
Sheet balsa formers of 1/16 stock are used to reinforce the wing tips. Balsa blocks are used to form the leading and trailing edges of the wing tips. The balance is filled in with 1/16 sheet balsa, top and bottom.
The entire leading edge forward of the spars is sheeted in, using 1/16 sheet balsa, along with the top and bottom of the center section. However, before cementing all the sheeting in place, fasten the lead-outs to the bellcrank, and cement the 1/8 diameter line guides in place. When the wing has dried sufficiently, cut out a portion of the center section large enough to permit the assembly of the push rod.
FUSELAGE: Fuselage construction is conven-tional and extremely simple, being of box design. Select two pieces of 1/8 x 3 x 36 hard sheet balsa for the fuselage sides. Cut to the required outline. Remove the center portion of the sides to allow a snug wing fit..."
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