Product overview
The Scorpion HK-5020 Shaft Kit (6mm 43mm) provides a factory replacement for a bent or broken shaft in any HK-5020 series helicopter motor. Its hardened steel shaft has a 10mm main diameter and an overall length of 84.6mm, with the pinion end ground to 6mm for 6mm pinion gears. Procurement is therefore for a motor replacement component rather than a flight platform or airframe kit. The stated 57.6g weight includes packaging.
Integration into another brushless motor requires a motor that accepts a 10mm shaft of this length; the shaft can be shortened with a Dremel tool and cut-off wheel if necessary. In Scorpion motors, the shaft forms a slight press fit within the aluminum front housing, so releasing the setscrews alone does not free it. Removal requires a bearing press or drill press, with the front housing supported in a wooden block to prevent warping during pressing.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Scorpion HK-5020 Shaft Kit (6mm 43mm) |
| Product type and intended application | Factory replacement shaft kit for all Scorpion HK-5020 series helicopter motors. |
| Shaft material | Hardened steel. |
| Main shaft diameter | 10mm |
| Shaft length | 84.6mm |
| Reduced shaft diameter | 6mm, for installation of 6mm pinion gears.At the pinion end. |
| Other motor fit | Also fits other brushless motors requiring a 10mm shaft of the specified length.Other brushless motors must require a 10mm shaft of this length. |
| Length modification | Can be shortened using a Dremel tool and cut-off wheel.If necessary to fit other motors. |
| Shaft retention | Slight press fit; removing the setscrews does not allow the shaft to slide out.In Scorpion motors with an aluminum front housing. |
| Removal equipment and procedure | Press out using a bearing press or drill press with the front housing supported.Support the motor front housing in a block of wood to prevent warping during shaft removal. |
| Weight | 57.6gIncluding packaging. |
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