The Ugears Mad Hornet Airplane is a "Medium" difficulty DIY wooden model with 354 parts, promising 8 hours of enjoyable assembly time. The airplane model is powered by a wind-up helical spring motor, often used in watch mechanisms and other precision instruments. Various gear sets transmit power from the spring to the aircraft's movable parts. The Mad Hornet features two modes: pre-flight check mode and taxi mode. Choose the mode by setting the rotating drum in one of two positions. Insert the special key into the stopper slot, then give up to 21 pulls on the winding string. Place the aircraft on a flat surface, then remove the key and watch as your Mad Hornet comes to life. In check mode the propeller spins while the wing flaps and tail rudder wiggle, before the aircraft switches automatically to taxi across the airfield to the runway for takeoff. In taxi mode your aircraft starts taxiing immediately, traveling up to 2.5 meters!

No glue or special tools are required to assemble this DIY model kit, just punch the pre-cut pieces out of their composite wood boards and snap them together. When assembling your Mad Hornet Airplane model, remember to lightly sand and wax the moving parts to make them run smoothly. This is a "Medium" difficulty model so meant for somewhat experienced modelers or those up for a challenge. The model kit includes detailed, illustrated instructions in 11 languages (Ukrainian, English, German, Spanish, French, Italian, Portuguese, Polish, Japanese, Chinese, and Korean) to guide your assembly. If you're not yet familiar with the Ugears catalogue of 3D puzzles, DIY model kits, automatons, robots, wooden puzzle boxes and STEM Lab models you could order one of our simpler models together with the Mad Hornet as a warm-up build.

• Model size: 10.4*9.6*4.9 in (26.5*24.5*12.5 cm)
• Package size: 14.9*6.7*1.3 in (37.8*17*3.4 cm)
• Number of components: 354
• Estimated time of assembly: 8 hours
• Level: Medium