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.
B20 22 L kv2455 + 4:1 is a professional Hacker B20 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 b20, 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.
B20 22 L kv2455 + 4:1 Product description and features B20 22 L kv2455 + 4:1 was specially developed for 600 to 800g glider models. The slim design and the gear reduction of 4:1 provide you with a very robust and durable motor. Many of our customers have been using our internal rotor motors for decades. With a weight of just 69g and a 3mm shaft, this internal rotor can be installed in many slim hulls. The geared motor is fastened with 2.5mm screws. Please note the maximum screw-in depth of 5 mm,
Reference SKU/model: 10017750. 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 B20 |
| SKU | 10017750 |
| EAN | 4250320210825 |
| Availability | Check availability |
| Weight [g] | 69 |
| Poles | 2 |
| Turns | 22 |
| Idle current (I0) at 8.4V [A] | 0,51 |
| Internal resistance (Ri) [Ohm] | 0,125 |
| Gear reducing | 4:1 |
| Recommended timing [°] | 0-5 |
| Switching Frequency [kHz] | 8 |
| Controller recommendation [A] (depending on setup) | 20 |
| Leerlaufdrehzahl pro Volt (kv) ohne Getriebe | 2455 |
| Length [mm]/[in] | 55,9 |
| Outer diameter [mm]/[in] | 20 |
| Shaft diameter [mm]/[in] | 3 |
| Prop Adapter | Nein |
| Gold plug mm (recommended) | 3,5 |
| Backmount mountable | Nein |
| Front mountable | Ja |
| max. power range [W] (max.15 sec.) | 220 |
| Mounting cross | Nein |
Tags: Hacker Motor GmbH, B20 22 L kv2455 + 4:1, Engines & Power, Electric Motors, Hacker Inrunner, Hacker B20
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