Product overview
The STEAM D4730 is a 520KV brushless power motor for 700-class competition helicopters, featuring hand-wound construction with high slot fill. Its stator measures 47 mm in diameter and 30 mm in thickness, with 12 stator arms and 10 magnetic poles. The motor weighs 550 g and has a body measuring 58.5 mm in outside diameter and 62.5mm in length. Shaft diameter is 6 mm, and total shaft length is 110 mm.
The D4730 supports batteries up to 12s. Maximum continuous current is 120 A and maximum continuous power is 5200 W; peak ratings are 250 A and 12500 W, each for 2 seconds. No-load current is 2.25 A at 10V, with motor resistance of 0.0115 ohm. Motor timing is 5° ~ 8°, and drive frequency is 8kHz or 32kHz. Supplied equipment includes one motor, four M4×7.5mm socket-head cap screws, three Φ7.0 gold-plated male banana connectors and three matching female connectors.
