| Lower pitch propellers will give a higher acceleration while higher pitches will increase top speed. The general rule is to decrease the pitch by one inch when you increase the diameter by one inch. Three bladed propellers should be one inch lower in pitch than two bladed propellers. |
|
Example: 11 x 7 = 12 x 6 = 3 blade 11 x 6 |
| Engine size (Cu.in.) | Two-Stroke | Four-Stroke |
| 0.10 | 7x4 - 7x6 | - |
| 0.15 | 7x4 - 8x4 | - |
| 0.21 | 8x6 - 9x6 | - |
| 0.25 | 8x7 - 9x6 | 9x6 - 10x6 |
| 0.28 | 9x5 - 9x6 | - |
| 0.30 | 10x6 - 11x4 | |
| 0.32 | 10x6 - 11x5 | - |
| 0.36 | 10x6 - 11x6 | - |
| 0.40 | 11x6 - 11x7 | 10x7.5 - 12x6 |
| 0.45 | 11x7 - 12x6 | 11x7 - 13x5 |
| 0.53 | 11x7 - 12x7 | 10.5x8 - 13x5 |
| 0.60 | 12x7 - 12x8 | 11x8 - 13x6 |
| 0.75 | 12x8 - 13x6 | 12x8 - 14x7 |
| 0.90 | 14x6 - 15x6 | 14x6 - 16x6 |
| 1.20 | 16x6 - 18x8 | 14x10 - 18x6 |
| Please abide by the safety practices recommended by propeller manufactures. This is especially important for high performance propellers. Assume that propellers can fail at any time, especially during full power adjustments on the ground. Never stand in or expose others to the plane of the propeller arc. |
