XTO-3115 vs T-Motor V3115: An Honest Spec Comparison for 10-Inch FPV Drone Builders
The XTO-3115 and T-Motor V3115 are both 3115-class brushless motors for 10-inch FPV drones. The XTO-3115 delivers up to 1,943W peak at 130g (900KV); the T-Motor V3115 offers matching stator dimensions at 120g. Both serve long-range cruisers, X8 cinelifters, and commercial payload platforms well—but they differ meaningfully in KV flexibility, cooling design, and price.
Quick Spec Comparison Table
| Specification | XTO-3115 (900KV) | T-Motor V3115 (900KV) |
|---|---|---|
| Stator Size | 31 × 15 mm | 31 × 15 mm |
| KV Options | 900KV, 1100KV, custom KV free | 900KV, 1050KV |
| Configuration | 12N14P | 12N14P |
| Peak Power | 1,943 W (6S) | ~1,700 W (6S, estimated) |
| Weight | 130 g | 120 g |
| Shaft Diameter | 5 mm hollow | 5 mm hollow |
| Mounting Pattern | 19 × 19 mm (M3) | 19 × 19 mm (M3) |
| Recommended Prop | 10×3.0–10×4.5 (3-blade) | 10×3.0–10×4.5 (3-blade) |
| Max Thrust (6S, 10″) | ~4.8 kg (3-blade) | ~4.5 kg (3-blade, estimated) |
| Continuous Current | 80A+ rated | ~70A (estimated) |
| Cooling Design | Hollow-shaft + open-bottom airflow | Standard open-bottom |
| Price Range (per motor) | Competitive (brand-tier, lower than T-Motor) | ~¥238 (~$33) |
| Custom KV Winding | ✅ Free, any KV upon request | ❌ Pre-set KV only |
Stator & Build Quality: The Core Comparison
Both motors share identical 31 × 15 mm stator footprint and 12N14P configuration. The XTO-3115 uses high-temp copper windings with automated precision winding. Its hollow shaft creates active airflow through the motor core—cool air enters from the bottom and exhausts through the top—helping maintain performance under sustained 80A+ loads. The T-Motor V3115, at 10g lighter, achieves weight savings through a thinner bell can—meaningful for racing (40g savings across a quad) but trading some thermal mass. For endurance and payload builds, the XTO-3115’s extra mass provides more thermal headroom.
Power & Efficiency: Real Numbers on 6S
| Metric | XTO-3115 900KV | T-Motor V3115 900KV (Est.) | Notes |
|---|---|---|---|
| No-load Current @ 10V | 1.2 A | ~1.1 A | Lower = less parasitic draw |
| Internal Resistance | 45 mΩ | ~50 mΩ | Lower = less heat at same current |
| Peak Efficiency Current | 35–45 A | ~30–40 A | Sweet spot for cruising |
| Max Burst Current (10s) | 85 A | ~75 A | Short punch capability |
| RPM @ 6S (22.2V) | ~19,980 | ~19,980 | Theoretical; loaded RPM is lower |
At the same KV, both motors spin near-identical RPM. The XTO-3115’s lower internal resistance (45 mΩ vs ~50 mΩ) means less heat at high current—meaningful at 60A+ on a loaded X8. For typical 10-inch cruising at 40–50% throttle, both deliver comparable flight times; the difference shows at the extremes.
KV Options & Application Flexibility
XTO-3115: 900KV, 1100KV, and Beyond
X-TEAM ships the 3115 in 900KV and 1100KV as standard SKUs, covering both 6S endurance (900KV) and higher-RPM builds (1100KV). But the real differentiator is free custom KV winding: need 950KV for a specific prop-battery combo? 850KV for a 12S Li-Ion endurance build? X-TEAM winds it to your spec at no extra charge.
T-Motor V3115: 900KV and 1050KV
T-Motor offers two pre-set KV variants. The 1050KV option provides a middle ground between 900KV and 1100KV, roughly equivalent to the XTO-3115 1100KV in real-world RPM. No custom KV is available—you work with what’s on the shelf.
Build Compatibility: Same Footprint, Same Ecosystem
Both motors use the 19 × 19 mm M3 mounting pattern and 5 mm shaft, making them drop-in compatible with all 10-inch 3115-class frames and props. For ESCs, 50–65A BLHeli_32 or AM32 units work optimally; a 4-in-1 65A ESC handles X8 builds comfortably.
Price & Value: What You’re Actually Paying For
At ¥238 (~$33) per motor, the T-Motor V3115 commands a premium for brand recognition and lighter weight. The XTO-3115 comes in at a significantly lower price while matching or exceeding key metrics—peak power, current handling, and cooling. Factor in free custom KV winding, and the value gap widens further: if your build needs a specific RPM between stock KV options, X-TEAM eliminates the compromise entirely. For fleet operators, per-unit savings multiply fast.
Frequently Asked Questions
Which motor is better for an X8 cinelifter: XTO-3115 or T-Motor V3115?
Both work well, but the XTO-3115 has a practical edge: higher continuous current rating (80A+ vs ~70A) and active hollow-shaft cooling help manage heat in coaxial configurations where lower motors run in warmer, disturbed airflow. Lower per-unit cost also matters when buying 8 motors.
Does the 10g weight difference matter?
For a racing or ultralight endurance quad, 40g across four motors is noticeable. For a typical 10-inch cruiser, cinelifter, or payload drone (AUW 2–5 kg), the difference is negligible—optimize battery or frame choice instead.
Can I run either motor on 8S?
Yes, with appropriate KV. 900KV on 8S (~29.6V) exceeds 26,600 RPM—too high for 10-inch props. You’d need ~650–700KV for 8S. X-TEAM’s free custom winding makes this feasible; T-Motor limits you to stock 900KV/1050KV, optimized for 6S.
Which motor runs cooler under sustained load?
The XTO-3115’s hollow-shaft cooling gives an edge in sustained high-current (60A+ for 30+ seconds), actively pulling heat through the stator. In typical mixed-throttle flying, both stay within safe ranges.
Where are these motors manufactured?
Both are made in China. X-TEAM produces the XTO-3115 in its Dongguan factory with direct QC. T-Motor manufactures the V3115 in its own Chinese facilities. Both export globally.
Final Verdict: Which One Should You Choose?
Pick the T-Motor V3115 if the lightest 3115 (120g) and brand familiarity are your priorities—it’s proven and predictable.
Pick the XTO-3115 for higher peak power (1,943W vs ~1,700W), better sustained-current handling, active hollow-shaft cooling, lower price, and free custom KV winding—ideal for X8 cinelifters, commercial payload rigs, and non-standard battery configs.
For most 10-inch FPV builders, the XTO-3115 delivers more performance per dollar and greater configuration flexibility.
Ready to spec your build? Contact X-TEAM at chris@x-teamrc.com or +86-769-85228181. Custom KV winding is free—tell us your target RPM, voltage, and prop size. Browse the XTO-3115 product page for full specs, CAD files, and bulk pricing.
