Designed to deliver clean and quiet power equivalent to or surpassing the power of a 90-size 2-stroke glow engine for sport and scale airplanes weighing 8 to 13 pounds (3. 6 to 5. 9 kg), 3d airplanes up to 10 pounds (4. 5 kg), or models requiring up to 1800 watts of power. It will provide excellent 3d performance for the hangar 9 frenzy 100 arf, showtime 4d 90 arf, funtana x 100 arf and other similar class models. The power 90 also provides great power and performance for the seagull ultimate bi-plane 90 arfs.