My glider looped and crashed into the ground. What is wrong?
First check for a warp or misalignment in the wing or stab. These are the most common cause of boost problems, and the reason that accurate building is so critical. If anything is found, fix it. Most gliders will have some pitch down at ignition and early boost, and gradually change to a pitch up condition near burnout. This results in an “S” shaped flight profile. If the deviation is minor, don’t worry about it. A slight roll during boost will keep your glider headed in the right direction. Models that have boost problems can often be helped with a longer and/or heavier pod. Extending the fuselage to put the motor farther in front of the wing also helps. A longer rod may help boost also, as will avoiding high winds when launching. If the model pitches down severely under thrust, the pylon may be too tall or the thrust may be misaligned. If the model pitches up under thrust, the pylon may be too low, or the thrust misaligned. If the model starts straight, then starts pitching up, the w
