Translations:KAVAN Beta 1400 Kit - Instruction manual/97/en

From KAVAN RC Wiki

The levator controls the model on the vertical axis. Apply the up elevator, and your model’s nose will rise (and the model will climb if it has sufficient power). Apply the up elevator, and your model will descend. Please note that your model can only climb if enough throttle is applied. Your model will not necessarily climb just because you have applied the up elevator and will usually need full power applied for a safe, gentle climb. If the climb angle is too great or the power applied is insufficient, your model will lose flying speed until the minimum (stall) speed. At the stalling speed (when the airflow starts to break away from the upper surface of the wing), your model will start to feel as though it is not responding as normal to control inputs and then drop with little warning – apply the down elevator to regain flying speed and full normal control.