SunnySky V4006 KV380
Series: SunnySky Brushless motors for drones
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
The V4006 KV380 from SunnySky, a Chinese maker, is an outrunner designed for efficiency, for mid-size multicopters. The type code gives a flat but wide stator of 40 mm diameter and 6 mm height; the motor measures 43.6 mm across and 18 mm in height on the outside.
It weighs 66 g and its KV is 380. It is rated for 4 to 6S, and the recommended propellers are the EOLO CN12x5, CN13x5 and CN15x5.5, that is 12 to 15 inches. With the CN15x5.5 at 25 V it reaches 2,297 g of thrust. The continuous current of 18 A applies for 60 s, and the stated power of 450 W corresponds to those 18 A at 25 V. Anyone comparing motors needs the same time base: values resting on 180 s or 30 s do not fit these. The series is also offered in a KV400 variant.
Legally the take-off mass of the whole aircraft counts. A multicopter with four motors of this type weighs 264 g in motors alone; that already exceeds the 250 g limit of class C0, and the operator must register. Remote ID is mandatory for C1 to C3. Motor, ESC and battery must share the same cell count.
A wide, flat stator gives plenty of torque at low KV for large propellers at low speed, which helps hover efficiency. Wear shows as bearing roughness and run-out of the bell; with heat damage the winding smells burnt or the insulation discolours.
Technical data
Other data
| Cell count (S) | 4-6Scorrect |
|---|---|
| Dimensions (mm) | 43.6x18correct |
| KV (rpm per volt) | 380correct |
| Maximum current (A) | 18correct |
| Maximum power (W) | 450correct |
| Maximum thrust (g) | 2,297correct |
| Power rating time base (s) | 60correct |
| Recommended propeller | EOLO CN12x5 / CN13x5 / CN15x5.5correct |
| Stator diameter (mm) | 40correct |
| Stator height (mm) | 6correct |
| Stator size | 40x06correct |
| Weight (g) | 66correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
We do not sell machines. We ask the dealers who carry this model and come back with price and lead time.
Request a quote →
We ask the suppliers and come back with price and lead time.
Request spare parts →
This page carries 12 individual figures for this model. What we cannot document is not here — we leave gaps open rather than estimate them.
Missing a figure you were looking for? Report it →
Know this machine better? Have a photo, a manual, or know that a figure is wrong? Add it to the register →
