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I made this this morning, based on a 12" long piece of bt-80 tubing, and some depron tail/wings downscaled from my Mach2 kit, I'll call it a Mach1, for 18mm D-2.3 rc motors, these are really neat little motors. I used two 8 gram servos, and a 5 gram receiver and 15 gram battery, needed no extra nose weight. AUW is 141 grams rtf and a half an ounce less in glide, a little less than 1 sq foot wing area. Wind this morning was pretty gusty, 8-10 mph, boosted really quickly and handled the wind well, landings were sort of elevator like, ie just set up into the wind, keep a little nose down and it just drops at a moderate rate straight down onto the runway. Very cute. I'll try to get some video later in the week if the wind slows down. Instead of a keel/underside mounted servos on the larger 4" kit, I did the servos on top, recessed into the fuse and no keel to save weight and give less to catch on when landing. Just like it's bigger brother it needed down trim for boost, I had to tone down the aileron movement as it was pretty responsive. I mounted the rail buttons on the side of the fuse where they would clear the servos/tail and not be on the bottom to catch on when landing.
2.6" diameter, 12" length, about 22" wingspan.
Frank
2.6" diameter, 12" length, about 22" wingspan.
Frank
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