Simple Ultimate. Radio control sport biplane model. Wingspan 33 in, wing area 396 sq in. For .10 - .20 engines, and 4 channel radio. Uses the Ace foam wing.
Quote: "Proof of the old adage 'good things come in small packages' is here with the Simple Ultimate. Now you can enjoy the adrenaline pumping thrills of the super-popular Ultimate biplane in a small, quick to build version. Sturdy and light weight structure is achieved through the use of crisply cut lite ply and balsa. Put a .15 engine in the nose, load it up with four mini servos and a small battery pack and you'll be set for a day of thrills."
Quote: "The Simple Ultimate is designed for .15 sized engines, but .10 to .20 can be used. The full scale Ultimate was designed for aerobatics and so is the model. The Ultimate can do every trick in the book, and you will probably invent a few more as you fly it. The Ultimate will take off from a smooth runway. Hold in a little right rudder to keep it straight. Take it up, trim it out then wring it out."
Direct submission to Outerzone.
Update 20/03/2019: Added 'Faux' plan drawing, thanks to JeffGreen.
Quote: "Hello, I created a Faux set of plans for the Ace Simple Ultimate (oz10721) that has built up wooden wings. I did the best I could to align everything up correctly... I sized the spars & such for a light weight & strong wing, but if you see anything that needs changing, please do. Or you could use the rib profile and the wing diagram to cut your own foam wing cores. I'd fully sheet the wing, tip to tip, top & bottom and wrap the center joint with nylon cloth & thin CA glue. I'd also wick thin CA into the lite ply wing struts at the cap screw holes and long the bottom & top edges of the strut by the screw holes or I'd put doubler's of 1/64 or 1/32 ply on each side of the lite ply strut around the screw hole, maybe the size of the 'tang' on the strut rib. Best Wishes, Jeff Green in Las Vegas"
Faux plan, shows built up wing and parts.
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This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
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