What Is the 3115 900KV Motor?
The 3115 900KV brushless motor is an outrunner motor designed for 10-inch multi-rotor drones and heavy-lift UAVs. It’s built for pilots and integrators who need reliable, efficient thrust on 6S LiPo power — ideal for long-range FPV, cinema lifters, and industrial mapping platforms.
XTO-3115 900KV: Key Specifications
X-TEAM’s XTO-3115 is the production-grade 3115 motor with both 900KV and 1100KV winding options. Below are the official specifications from the datasheet:
| Parameter | Value |
|---|---|
| Model | XTO-3115 |
| KV Options | 900KV / 1100KV |
| Stator Diameter | 31 mm |
| Stator Height | 15 mm |
| Magnetic Configuration | 12N14P |
| Weight | 130 g |
| Max Power (1100KV) | 1,943 W |
| Max Continuous Current | 80 A+ |
| Battery | 6S LiPo (22.2 V) |
| Recommended ESC | 80–100 A individual / 80 A 4-in-1 |
| Recommended Propeller | 1045 tri-blade, 10.5×5 tri-blade |
| Recommended Frame | 10-inch X-Class or custom heavy-lift |
| Cooling | Hollow rotor structure (active airflow) |
| Custom KV Winding | Available — free of charge |
Thrust Test Data
Below is the official thrust test data for the XTO-3115 at 1100KV on a 1045 tri-blade propeller with 6S voltage. The 900KV variant delivers approximately 10–15% lower peak thrust with proportionally better efficiency in the mid-throttle range — ideal for endurance-focused builds.
| Throttle | Current (A) | Power (W) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|
| 30% | 4.98 | 119.5 | 621 | 5.2 |
| 50% | 16.7 | 400.8 | 1,627 | 4.1 |
| 70% | 36.2 | 868.8 | 2,914 | 3.4 |
| 100% | 84.5 | 1,943.5 | 4,815 | 2.5 |
What this means in practice: On a quadcopter with four XTO-3115 motors, you get up to 19.2 kg of total thrust at full throttle. At 50% throttle — the typical hover point for many builds — each motor produces 1.6 kg thrust at only 16.7 A, giving you comfortable payload margins for cinema cameras, LiDAR units, or agricultural spray tanks.
Why the XTO-3115 Stands Out
Hollow Structure Cooling
Pushing nearly 2,000 W through a 130 g motor generates heat. The XTO-3115 uses a hollow rotor design that actively pumps air through the motor core while spinning — no added weight for a cooling fan, no complex ducting. This keeps winding temperatures stable even under sustained 80 A+ loads, which is critical for long-duration mapping missions and heavy-lift hover scenarios.
12N14P Magnetic Architecture
The 12-slot, 14-pole configuration delivers smooth startup with minimal cogging. For aerial cinematography and precision hovering, this means cleaner throttle response and less high-frequency vibration transmitted to the camera gimbal.
130 g — Light but Powerful
At 130 g, the XTO-3115 is lighter than most 35XX-series motors with comparable output. Every gram saved on the motor is multiplied across four (or eight, for X8 configurations) and translates directly into longer flight time or higher payload capacity.
900KV vs 1100KV: Which Should You Choose?
| Factor | 900KV | 1100KV |
|---|---|---|
| Best for | Long-range, endurance, efficiency | Maximum thrust, heavy payload |
| Typical prop | 10.5×5 tri-blade | 1045 tri-blade |
| Hover efficiency | Higher (lower current at cruise) | Moderate |
| Peak thrust (est.) | ~4.1 kg per motor | 4.8 kg per motor |
| Use case | Mapping, survey, long-range FPV | Cinelifters, agricultural spray, heavy payload |
Not sure which KV fits your build? X-TEAM offers free custom KV winding — you’re not locked into just two options.
Applications: Where the 3115 900KV Motor Excels
- Long-Range FPV Cruisers: 10-inch frames with 6S packs and 900KV motors deliver efficient cruise at 40–60 km/h with 20+ minute flight times — ideal for mountain surfing and coastal runs.
- Cinelifters / X8 Heavy-Lift: Need to lift a RED Komodo or Sony FX6? Four XTO-3115s at 1100KV provide the muscle; X8 configurations double redundancy for expensive payloads.
- LiDAR & Photogrammetry Mapping: Stable hover at 50% throttle with 1.6 kg thrust per motor lets survey drones carry multi-sensor payloads without overworking the motors.
- Agricultural Spray Drones: The hollow cooling structure handles sustained high-load operation — exactly what 10 L+ spray tank drones need during a full sortie.
- Custom UAV Prototypes: With free custom KV winding, university labs and UAV startups can dial in the exact KV they need for novel airframes without paying for a custom motor run.
Recommended Power System Pairing
| Component | Recommendation |
|---|---|
| ESC | 80–100 A individual / 80 A 4-in-1 (BLHeli_32 or AM32) |
| Propeller | 1045 tri-blade (thrust), 10.5×5 tri-blade (efficiency) |
| Battery | 6S 5,000–10,000 mAh LiPo (min. 45C burst) |
| Frame | 10-inch X-Class, 450–550 mm wheelbase |
| Flight Controller | ArduPilot / PX4 stack with ≥8 PWM outputs for X8 |
FAQ
Q: What’s the actual thrust difference between 900KV and 1100KV on 6S?
The 1100KV variant produces 4.8 kg peak thrust per motor (1045 tri-blade, 6S). The 900KV variant delivers roughly 4.1 kg peak — about 15% less — but draws proportionally less current, giving you better flight time. For mapping drones where endurance matters more than raw punch, 900KV is the smarter choice.
Q: Can I run the XTO-3115 on a 7-inch frame?
Technically possible, but it’s overkill. A 130 g motor on a 7-inch build adds unnecessary weight and the large stator is inefficient at lower loads. For 7-inch builds, X-TEAM’s XTO-2807 (57 g) is a much better fit.
Q: Does X-TEAM offer custom KV winding for the 3115?
Yes. If 900KV and 1100KV don’t match your build, X-TEAM winds the XTO-3115 to your exact KV specification — free of charge. Just reach out with your target KV and voltage.
Q: What ESC protocol works best — BLHeli_32 or AM32?
Both work well. AM32 is open-source and increasingly popular for UAV builds; BLHeli_32 has a larger installed base with proven 96 kHz PWM for smooth motor response. An 80 A 4-in-1 on either protocol will handle the XTO-3115 at 6S without issue.
Q: How does the XTO-3115 compare to a generic 3115 motor?
Generic 3115 motors often cut corners on bearing quality, winding consistency, and cooling design. The XTO-3115 uses Japanese NMB bearings, precision CNC winding, and the hollow rotor cooling structure — tested to handle sustained 80 A+ loads without thermal throttling. Plus, you get factory-direct pricing with brand-level quality control.
Get the XTO-3115 for Your Build
The XTO-3115 brushless motor is in stock and ready to ship. Both 900KV and 1100KV variants are available, and custom KV winding is always free.
Questions about compatibility, bulk orders, or custom specifications? Reach out directly:
- 📧 Email: chris@x-teamrc.com
- 📞 Phone: +86-769-85228181
- 🔧 Free Custom KV Winding: Need a specific KV? We’ll wind it for you — no extra charge.
