Product overview
The Scorpion HKII-2208 Shaft Kit is a factory replacement motor shaft accessory for the HK-22mm motor family, intended for repairs after a shaft bends or breaks. Its integration points are the motor’s aluminum front housing, bearings and pinion interface. The HK-2208 dimensional description specifies a 4mm shaft diameter, 45.7mm length and a pinion end reduced to 3.17 mm. Weight including packaging is 4.32g. This is a motor service component rather than a flight platform or airframe kit.
Installation involves a slight press fit: loosening the setscrews does not allow the shaft to slide free. Removal requires a bearing press or drill press, with the front housing supported in a wood block to prevent warping. The shaft can be shortened with a Dremel and cut-off wheel for other motor installations. However, a separate dimensional note describes these replacement shafts as 3mm throughout for conversion to 3mm pinions, conflicting with the 4mm and 3.17 mm dimensions. Stock shafts are described as 3.175mm (1/8") at the output and 3mm through the bearings.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Scorpion Power System HKII-2208 Shaft Kit |
| Product type and purpose | Factory replacement motor shaft accessory for the Scorpion HK-22mm motor family. |
| Shaft diameter | 4mmHK-2208 series shaft dimensional description. |
| Shaft length | 45.7mmHK-2208 series shaft dimensional description. |
| Pinion-end diameter | 3.17 mmHK-2208 series shaft dimensional description. |
| Alternative shaft diameter statement | 3mm from end to endSeparate replacement-shaft note; conflicts with the 4mm shaft and 3.17 mm pinion-end dimensions. |
| Stock shaft interface dimensions | Output end: 3.175mm (1/8"); bearing sections: 3mm.Stock motor shafts. |
| Pinion conversion purpose | Conversion of the motor to accept 3mm pinions.Replacement-shaft conversion described for users with 3mm pinion gears. |
| Length modification | Can be shortened using a Dremel tool and cut-off wheel.Where shortening is necessary to fit other motors. |
| Shaft retention | Slight press fit; removing the setscrews alone does not release the shaft.Installed in the motor's aluminum front housing. |
| Removal equipment and housing support | Use a bearing press or drill press, with the motor front housing supported in a block of wood to prevent warping.During shaft removal. |
| Weight | 4.32gIncluding packaging. |
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