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.
Spant 4 B 50 D / B 50 PG / A 30 D und PG / A 40 D und PG is a professional Spareparts / Accessories 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 spareparts / accessories, 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.
GRP - Motor mount fits for: - B50 direct drive / B 50 with Gearbox 6,7:1 - B50-Competition with Gearbox 6,7:1 - B40-Competition with Gearbox 6,7:1 - A30 with Gearbox 6,7:1 - A30 direct drive - A40 direct drive - A40 with Gearbox 6,7:1 Outer Diameter: 45mm GRP - Motor mount fits for: - B50 direct drive / B 50 with Gearbox 6,7:1 - B50-Competition with Gearbox 6,7:1 - B40-Competition with Gearbox 6,7:1 - A30 with Gearbox 6,7:1 - A30 direct drive - A40 direct drive - A40 with Gearbox 6,7:1 Outer Dia
Reference SKU/model: 29198564. 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 | Spareparts / Accessories |
| SKU | 29198564 |
| EAN | 4250320206170 |
| Availability | In stock |
Tags: Hacker Motor GmbH, Spant 4 B 50 D / B 50 PG / A 30 D und PG / A 40 D und PG, Engines & Power, Electric Motors, Hacker Inrunner, Hacker B50-Competition, Spareparts / Accessories
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