Overview
The Sub250 M1 0803 Series is a lightweight, high-efficiency brushless motor line designed for 1.4" to 1.6" 1S micro FPV drones. Weighing just 2.2g, it offers exceptional thrust-to-weight ratio and reliability, making it perfect for toothpick builds and tight-space freestyle flying. Available in two variants, each optimized for specific use cases:
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16500KV with 1.0mm shaft: Ideal for flexible prop compatibility, low-vibration setups, and general-purpose indoor builds.
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19000KV with 1.5mm shaft: Built for aggressive flying styles and racing drones like the Nanofly16, offering stronger durability and higher RPM performance.
Both models feature a 9N12P stator, N52H magnets, and custom low-loss winding for maximum efficiency with minimal heat.
Key Features
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Super lightweight: only 2.2g per motor
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Two performance-tuned variants:
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16500KV with 1.0mm shaft – versatile, fits more props
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19000KV with 1.5mm shaft – more rigid, built for speed
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Designed for 1S LiPo setups (4.2V)
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Supports 1.4" to 1.6" propellers
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Durable 9N12P stator with high-temp copper windings
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High-efficiency design: low heat, consistent power
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Perfect match for frames like Sub250 Whoopfly16, Nanofly16
Technical Specifications
| Parameter | 16500KV Version | 19000KV Version |
|---|---|---|
| Shaft Diameter | 1.0mm | 1.5mm |
| Recommended Use | Freestyle, indoor flying | Racing, aggressive freestyle |
| Input Voltage | 1S (4.2V) | 1S (4.2V) |
| Stator Size | 8.4mm x 2.8mm | 8.4mm x 2.8mm |
| Configuration | 9N12P | 9N12P |
| Dimensions | Φ12mm × 14mm | Φ12mm × 14mm |
| Weight | 2.2g | 2.2g |
| Battery Suggestion | 1S 380mAh–530mAh LiPo | 1S 380mAh–530mAh LiPo |
| Suitable Prop Size | 1.4"–1.6" | 1.4"–1.6" |
Package Options
Single Motor Includes
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1 × M1 0803 Motor (Select KV/Shaft version)
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4 × M1.4×3mm Mounting Screws
4-Pack Includes
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4 × M1 0803 Motors (Same KV/Shaft version)
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16 × M1.4×3mm Mounting Screws

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