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Hi-Max Homebuilt – Take your pick: radio-control or free-flight!

The Hi-Max is all fueled up and ready for her maiden flight.
My design concept began with a 25-inch span, 1/12-scale, rubber-powered free-flight (FF) model. It turned out to be a terrific flier that was remarkably easy to trim, so I figured if it will fly that well on its own, a 4-channel RC model might be a good next step. I doubled the original FF design to 1/6 scale with a 50-inch wingspan. Since there are very few curved surfaces on the models, either version of...

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