Product overview
The Scorpion HK5-4026-545KV (6x32mm shaft) is a BLDC motor intended for 550–580 class helicopters operating on a 12s battery. Its physical architecture combines a 40 mm diameter, 26 mm thick stator with 12 stator arms, 10 stator poles and a 6T Delta winding using 1.25mm motor wire. An internal fan works with an external centrifugal fan to support motor cooling. The supplied product is a motor and accessory package for integration into a helicopter.
Installation space must accommodate a 49.5mm x 57.30mm motor body and a motor weight of 370.0 grams. The model designation specifies a 6x32mm shaft, while the external shaft specification gives 5.98mm x 36mm. Continuous ratings are 70 amps and 3100 watts; the 95A and 4218-watt peak ratings apply for two seconds. The specified maximum LiPo configuration is 12s, with higher cell counts possible through appropriate gear ratio adjustment. Included accessories comprise three female 4mm connectors, three heat-shrink pieces and a hardware/accessory pack.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity | Scorpion HK5-4026-545KV (6x32mm shaft) |
| Intended application | 550 - 580 class helicopter12s battery operation. |
| Motor Kv | 545KV RPM/Volt |
| Weight | 370.0 Grams ( 13.05oz) |
| Motor body dimensions | 49.5mm x 57.30mm (1.95" x 2.25") |
| External shaft dimensions | 5.98mm x 36mm (0.235" x 1.42") |
| Continuous current | 70 Amps |
| Continuous power | 3100 Watts |
| Peak current | 95A (2 seconds)2 seconds. |
| Peak power | 4218 Watts (2 seconds)2 seconds. |
| Maximum LiPo cell count | 12sHigher cell count possible with appropriate gear ratio adjustment. |
| Stator diameter | 40 mm (1.57 in) |
| Stator thickness | 26 mm (1.02 in) |
| Number of stator arms | 12 |
| Number of stator poles | 10 |
| Motor winding | 6T Delta |
| Motor wire | 1.25mm |
| Cooling architecture | Internal fan combined with an external centrifugal fan |
| Higher cell count provision | Higher cell count possible with appropriate gear ratio adjustmentAppropriate gear ratio adjustment. |
| Supplied configuration | 1 x HK5-4026 BLDC motor; 3 x female 4mm connectors; 3 x heat shrink; 1 x hardware / accessory packIncluded equipment. |
| Packaged weight | 400gIncluding packaging. |
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