Translations:KAVAN FS400AR - Instruction manual/17/en
Propeller Choice
The choice of propeller for your FS 400 depends on the size, weight, and performance level of the model. Determine the best propeller size after practical experiment. As a starting point, refer to the propeller chart below for expected RPM with specific propellers:
| Propeller | RPM |
|---|---|
| 18×10“ | 8 200–8 400 |
| 18×12“ | 7 200–7 400 |
| 18×14“ | 6 800–7 000 |
| 20×8“ | 7 900–7 200 |
| 20×10“ | 7 000–7 200 |
| 22×8“ | 6 900–7 100 |
Be sure to use only well balanced propellers only. An unbalanced propeller causes vibration and loss of power. It is also important to ensure that the propeller has no nicks, splits, or cracks and shows no other signs of wear.
Note: For safety reasons, at all times keep your face, hands, and rest of body well away from the path of the propeller during all operating procedures, including starting, and needle valve adjustments. Please refer to the Safety Instructions and Warnings in this Manual for added safety cautions.