About this Plan
Sierra. Radio control sport trainer model. Wingspan 60 in, wing area 660 sq in, for .28 - .46 2-stroke or .40 - .60 4-stroke engines.
Quote: "The Top Flite Sierra is an excellent trainer model designed to get you off to a great start in learning to build and fly. After you learn to fly, the Sierra also has enough maneuverability to perform most basic aerobatics and provide many hours flying enjoyment. The easy construction, great lines, and included decals make it easy for you to build a great-looking model.
The Top Flite Sierra is designed to fly as good as it looks. Its thick, flat-bottom wing offers strong lift at slow speeds and great strength. The computerdesigned, interlocking structure allows you to build a straight and true model with smooth confidenceboosting flight qualities.
Engine and Mount: The recommended engine size range is as follows:
.28-.40-.46 cu in 2-cycle
.40-.48-.60 cu in 4-cycle
Note: The displacement in bold type is the most highly recommended. However, all of these engines will fly the Sierra well. The supplied MM40 motor mount should hold most of the two strokes in the range and some of the four strokes. It is permissible to file the inside of the mount slightly to fit larger engines (see photo on page 28). Some engines may require you to buy a different mount from your hobby dealer. Study the plans and the engine mounting section of this bookformore information and sample installations.
Bolt-on or Rubber Band-on Wings: The Sierra has been designed and tested with rubber band-on or bolt-on wings. The rubber band on wings will better absorb the shocks of a crash or landing accident such as a cartwheel. If you have a good instructor and flying site or already have some flying experience, you may want to use the bolt-on wing option.
3 or 4 Channels: The Sierra flies very well with or without ailerons. The 3-channel version will be cheaper and easierto build. The 4-channel version offers the extra flexibility of aileron control. Ailerons make cross wind take offs and landings easier to control, so many instructors recommend ailerons.
Tricycle or Taildragger Gear: The tricycle landing gear is considered standard. We recommend the tricycle gear if this is your first airplane because it offers the best ground handling as well as straight ahead take offs and landings. The tricycle gear also does a better job of protecting the propeller during bouncy take offs and landings. If you are sport flying the Sierra or want to learn to fly a taildragger, provisions have been made to allow you to build the Sierra as a taildragger. The Great Planes #L-7 tail wheel assembly may be purchased from your dealer and modified slightly to match the drawing on the fuselage plans..."
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Supplementary file notes
Manual. 44 pages.
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