- Shaft diameter: 3mm<br>- Recommended Propeller: 2-cells 8*4、 3-cells 7*5<br>- KV: 2200 RPM/V<br>- Max efficiency current: 14~22A<br>- Max current: 28A for 60s<br>- No load current: 1.2A<br>- Number of cells: 2~3 Li-Poly、 6~8 Ni-xx<br><br>                                                                                                                                Dimensions: 1.46 in x 1.10 in x 1.10 in (3.7 cm x 2.8 cm x 2.8 cm)<br />Weight: 1.73 oz (49 g)<br /><br />