Skill Level 3. Big Dog is big and basic. Standing over 32 inches tall, the kit features blowmolded plastic nose cone, laser-cut balsa fins and a rugged 29mm diameter motor mount. Flights with an Aerotech F32-6W will go to almost 3,000 feet. Then your Big Dog will recover gently on the big 18" fabric parachute. Includes big, easy-to-apply self adhesive decals. Also includes 24mm engine adapter that allows you to use 24mm engines. Recommended Motors: D12-3, D12-5, E9-4, E9-6 - Aerotech E20-4W, E20-7W, F32-6W, F20-7W.