How to match an electric motor to an RC aircraft
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
E40-XS 2D +6,7:1 Kv 4700 is a professional Hacker E40 geared Version item from Hacker Motor GmbH, prepared for the RC-MODEL catalog with customer-facing information, official product imagery, structured specifications and no storefront supplier pricing.
This product is relevant for RC builders and pilots looking for hacker e40 geared version, replacement parts, upgrades or setup components. Use it when planning a new model build, maintaining an existing aircraft, boat or radio system, or comparing compatible electronic and power-system parts.
Confirm the physical dimensions, weight, voltage, current rating, connector style, shaft size, cell count, propeller range and installation space against your model. RC-MODEL can help verify compatibility when you provide the model name and part number.
E40-XS 2D +6,7:1 Kv 4700 Product description and features Compact, light and powerful, this modern gear drive is perfect for F3F/F3J and F5J models, for applications with 3S to 4S LiPo batteries and up to 5 kilograms take-off weight . Driven by our Hacker Motor E40-XS 2D , the 6.7:1 gear drive achieves a high level of efficiency while remaining absolutely cool thanks to the integrated fan. Ready-to-install complete system The electric motor and gearbox are delivered ready to install . The comple
Reference SKU/model: 10108993. Mention this reference when contacting RC-MODEL for availability or fitment support.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
A practical guide to motor KV, voltage, current, thrust, aircraft weight and flight style so the power system matches the model.
Diameter, pitch, motor load, current measurement and how propeller choice changes thrust, speed, efficiency and heat.
ESC selection by maximum current, voltage, BEC, safety margin, cooling, connector choice and the real load from motor and propeller.
A step-by-step safety guide for measuring amps, watts and voltage sag so customers avoid overheating motors, ESCs and LiPo batteries.
A safety and performance guide to propeller balance, spinner fit, bent shafts, motor mounts, firewall checks and protecting electronics from vibration.
| Technical Specifications | |
| Manufacturer | Hacker Motor GmbH |
| Product Type | Hacker E40 geared Version |
| SKU | 10108993 |
| EAN | 4250320270591 |
| Availability | In stock |
| Weight [g] | 176 |
| Poles | 4 |
| Turns | 2D |
| Idle current (I0) at 8.4V [A] | 2.9 |
| Internal resistance (Ri) [Ohm] | 0,009 |
| Gear reducing | 6.7:1 |
| Recommended timing [°] | 10-15 |
| Controller recommendation [A] (depending on setup) | 50-80A |
| Length [mm]/[in] | 75,1 |
| Outer diameter [mm]/[in] | 29 |
| Shaft diameter [mm]/[in] | 6 |
| Prop Adapter | no |
| Gold plug mm (recommended) | 3.5 |
| Backmount mountable | no |
| Front mountable | yes |
| max. power range [W] (max.15 sec.) | 1100 |
| Mounting cross | no |
| Idle speed per volt (kv) | 4700 |
| Output shaft | 6 |
| Diameter [mm]/[in] | 25 |
| Gold plug mm (soldered) | no |
| RPM max. | 10000 |
Tags: Hacker Motor GmbH, E40-XS 2D +6, 7:1 Kv 4700, Engines & Power, Electric Motors, Hacker Inrunner, Hacker E40 geared Version
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