Bostonian is AMA event category 129. A Bostonian model has a 16-inch maximum
wingspan and a fuselage length of 14 inches. The fuselage must enclose an imaginary
box 1.5 x 2.5 x 3.0 inches in size. It must have a landing gear. Flying surfaces
must be covered on both sides. The model must weigh at least 14 grams without
rubber motor for a monoplane, 20 grams for others. If you get the idea that
the designers of this event were trying to force competitors toward models
with a scale-like appearance, you are probably right. The net result of the Rules is
that most Bostonians are good flyers both indoors and out. The fuselage must
be built-up to enclose the imaginary
box, and the weight minimums tend to encourage reasonably strong structures.
The Bostonian class is good class for beginners as it allows for good performance with scale-like appearance.
I received this picture from Rolf Christopherson as he was building up this V-tailed Bonanza look alike called Beancraft Banana.
Another of Rolf's designs for an endurance type.