Product overview
HOBBYWING positions the RTF 4215 as a propulsion motor for FPV drones, with separate 400KV and 600KV versions. The product described is a motor component. Its construction combines a 12-slot, 14-pole arrangement with thin stator laminations, multi-strand enameled-wire windings and arc-shaped magnets. The propeller mount incorporates both a self-cooling feature and an anti-slip tooth structure, presented as measures addressing heat and propeller slippage.
For installation planning, both variants have a published diameter of 50 mm and height of 36.8 mm, with a 42 mm by 15 mm stator. The mechanical interface includes a 6 mm axle, a 25 mm shaft and a 30 mm mounting pattern with four M4 mounting points. Both list 14 AWG wire measuring 500 mm. These dimensions should be confirmed for the selected configuration. Component dimensions.
The electrical choice is configuration-dependent: the 400KV version lists an 8S LiPo battery, while the 600KV version lists 6S. HOBBYWING supplies recommended propeller and ESC combinations, without establishing that those items accompany the motor. Maximum current is qualified by a non-hermetic environment and ambient temperature at or below 25°C, with different allowable durations for each variant; maximum power is also time-limited. Published thrust figures lack an identified measurement setup in the table, so procurement decisions should retain those limitations and confirm the intended combination.
Specifications
| Specification | Value & conditions |
|---|---|
| Product and variants | HOBBYWING RTF 4215 FPV motor; 400KV and 600KV variants. |
| Motor dimensions | Both variants: diameter 50 mm × height 36.8 mm. |
| Slots and poles | Both variants: 12 slots and 14 poles. |
| Stator dimensions | Both variants: diameter 42 mm × 15 mm. |
| Bearing | Both variants: 626ZZ. |
| Stator material and coating | Both variants: high-standard silicon steel sheet with a 180°C high-temperature-resistant paint coating. |
| Motor axle diameter | Both variants: 6 mm. |
| Winding insulation | Both variants: 220°C high-temperature-resistant enameled wire with Class C insulation. |
| Shaft length | Both variants: 25 mm. |
| Insulation test | Both variants: 500 V AC high-voltage withstand test.Published insulation-test specification. |
| Motor mounting dimensions | Both variants: diameter 30 mm mounting pattern, four M4 mounting points. |
| KV rating | 400KV variant: 400; 600KV variant: 600. |
| LiPo battery | 400KV: 8S LiPo; 600KV: 6S LiPo.Battery specification depends on motor variant. |
| No-load current | 400KV: 2 A; 600KV: 3.6 A.No-load values. |
| Maximum current | 400KV: 58 A / 45 s; 600KV: 107 A / 15 s.Maximum current is specified for a non-hermetic environment at ambient temperature ≤25°C. Preserve the variant-specific duration: 45 seconds for 400KV and 15 seconds for 600KV. |
| Rated power output | 400KV: 535 W; 600KV: 601 W. |
| Maximum power | 400KV: 1857 W / 45 s; 600KV: 2572 W / 15 s.Time-limited maximum values: 45 seconds for 400KV and 15 seconds for 600KV. |
| Maximum thrust | 400KV: 6.1 kg; 600KV: 6.8 kg.Maxima; the specification table does not identify the propeller or measurement setup used for these thrust values. |
| Resistance | 400KV: 44 mΩ; 600KV: 25 mΩ. |
| Wire size | Both variants: 14 AWG. |
| Wire length | Both variants: 500 mm. |
| Weight with wire | 400KV: 255 g; 600KV: 257 g.Published weights include wire. |
| Recommended propellers | 400KV: HQ13x9x3; 600KV: HQ13x9x3 or HQ13x10x3.Recommended combinations, not a statement that propellers are included or universally compatible. |
| Recommended ESCs | 400KV: RTF 80A 4in1 8S Lite AT or RTF 100A 4in1 8S Lite AT; 600KV: RTF 100A 4in1 8S Lite AT.Manufacturer-recommended application combinations; confirm the selected motor, battery and ESC configuration. Inclusion in the supplied package is not established. |
| Recommended combination batteries | 400KV combination: 8S LiPo; 600KV combination: 6S LiPo.Recommended application combinations depend on motor variant. |
| Propeller-mount cooling | Self-cooling propeller mount.Cooling feature. |
| Propeller retention feature | Anti-slip tooth structure on the propeller mount.Design intended to reduce propeller slippage. |
| Stator lamination thickness | 0.2 mm. |
| Winding construction | Multi-strand enameled-wire windings.Winding construction; the temperature comparison is at identical power output and is not quantified. |
| Magnet architecture | Strong arc-shaped magnets.Magnetic architecture. |
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