Translations:KAVAN Cumul 100 - Instruction manual/50/en
Keep your CUMUL 100 in the wind and observe its flight. If it turns without power right (although under power it kept the straight direction) it will be necessary to increase the motor's right side thrust and vice versa. If descends too much without power (although under power it kept the level flight) you will have to increase motor down thrust (assuming the centre of gravity is correct! - check it after landing).