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Scorpion Brushless Motors HK 40mm Series
Select Motor Size: HK-4020 | HK-4025 | HK-4035 | Turbax Fan E-Conversion Kit
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The Scorpion HK-4020, HK-4025 and HK-4035 motors have been developed for the newer 550, 600 and 700 class electric helicopters that are now coming onto the market. These motors are designed to run on 10-12 LiPo cells, and can produce up to 4200 watts of power! They also work great in aircraft needing a high Kv motor such as pylon racers and hotliners. These motors are designed to provide all the power that you can use, while still maintaining excellent efficiency and cool running characteristics. To help you select the correct motor for your helicopter, Lucien at Innov8tive Designs has written a Helicopter Motor Application Guide.
All Scorpion HK-40mm series motors come with 4mm male Bullet style connectors already attached, and include a hardware package that contains 3 matching female Bullet connectors for your speed controller with matching heat shink tubing. The motors feature an 8mm motor shaft that is ground down at the output end to 5mm (HK-4020 and HK-4025) or 6mm (HK-4035). Since the HK series motors are primarily designed for Helicopter and Ducted Fan use, they do not include a prop adapter. If you intend running a prop on this motor, you will need to purchase a prop adapter for a 6mm shaft; 40mm motor mounts are available here. Read more about Scorpion Motors. Spare shafts, and bearings are available. Keep your bearings in top condition with the Scorpion motor lubrication kit.
3 winds are available for this 40mm x 20mm motor:
Suitable 5mm shaft mod 0.6 pinions are available here.
5 winds are available for this 40mm x 25mm motor:
5 winds are available for this 40mm x 35mm motor:
The HK-4035-500 and HK-4035-560 motors are available with M4 mounting holes instead of the normal M3.
Electric powered ducted fan models are becoming very common now, and for many years, the Turbax Fan has been a very popular model for powering a variety of jet kits. Due to the fact that there are many models already built that contain Turbax fans, as well as many other models that can use this power system, Scorpion has developed an Electric Conversion Kit for this fan unit. The Turbax Electric Conversion Kit consists of a custom version of the Scorpion HK-4035-800 motor, connected to a CNC machined aluminum Motor Mount and Stator Vane support. This assembly is designed to be a direct bolt in replacement for the stock glow engine motor mount, and allows for easy conversion of either new or existing power systems from Glow to Electric power.
The special version of the HK-4035-800 motor includes an extended 8mm motor shaft that is precision ground to a 5mm diameter at the end, to mate up with the stock Turbax Fan Impeller. The CNC machined Stator Vane Support has 6 pockets around the perimeter with threaded holes to allow the stock stator vanes to be bolted in place with no modifications. Once installed, this powerful Electric Conversion Kit can provide up to double the thrust, compared to the stock glow set-up with a .46 size engine, and can breathe new life into existing models that were a bit underpowered with the stock glow motor power systems.
With the stock 5-blade Turbax impeller fan, the Scorpion Electric Conversion Kit can be run on either 10 or 12 Li-Po cells, depending on the desired power output level. Running on 10 Li-Po cells, 35 volts under load, the motor will pull 75 amps for 2625 watts of power, and will produce 4200 grams of thrust (9.3 pounds) at approximately 25,500 RPM. Running on 12 Li-Po cells, 42 volts under load, the motor will pull 105 amps for 4410 watts of power, and will produce 5900 grams of thrust (13.0 pounds) at approximately 30,000 RPM.
Included in the Turbax Electric Conversion Kit are the following items:
A picture of the kit contents is on the More Images tab.
