T-MOTOR P1604 FPV Motor 2850KV 6S / 3800KV 4S, 618.8g Thrust for 3.5in Freestyle Sub-250g
T-MOTOR P1604 FPV Motor 2850KV 6S / 3800KV 4S, 618.8g Thrust for 3.5in Freestyle Sub-250g
T-Motor
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Overview
T-MOTOR P1604 is a lightweight FPV motor designed for 3.5in freestyle builds, including sub-250 g drones. Two KV options are available: 2850KV (6S) and 3800KV (4S). The motor features a unibell design described as a continuation of the PACER bell design for improved durability, and it uses a T-mount pattern intended to suit more props and frames.
Key Features
- Designed for 3.5in FPV freestyle builds (sub-250 g stated)
- Two KV options: 2850KV (6S) or 3800KV (4S)
- Unibell design (continuation of the PACER bell design), described as more durable
- T-mount version with 9 x 9 mm mounting holes (stated)
- Super lightweight: 11.6 g (including cable)
Specifications
| Brand | T-MOTOR |
| Model | P1604 |
| Use | Vehicles & Remote Control Toys |
| Recommended age | 14+y |
| Origin | Mainland China |
| Material | Metal |
P1604 Electrical / Mechanical (from specification table)
| KV | Configuration | Shaft Diameter | Lead | Weight (Incl. Cable) | Voltage | Idle Current (10V) | Max. Power (10s) | Peak Current (10s) |
|---|---|---|---|---|---|---|---|---|
| 2850KV | 12N14P | 2 mm | 24#120mm | 11.6 g | 25.2V | 0.4A | 394.6W | 15.8A |
| 3800KV | 12N14P | 2 mm | 24#120mm | 11.6 g | 16.8V | 0.8A | 277.8W | 16.8A |
Mounting / Drawing Notes (as labeled)
- T-mount version: 1.5 mm shaft (stated) and 9 x 9 mm mounting holes
- Drawing labels include: 15.5, 2.9, 9, 4-M2, Ø20.8, Ø5, Ø1.5
Test Data (Propeller: GF3520-3)
2850KV (25.2V class)
| Throttle | Voltage (V) | Current (A) | RPM | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 20% | 25.2 | 1.4 | 19580.2 | 104.1 | 35.4 | 2.94 |
| 40% | 25.1 | 4.2 | 28436.5 | 235.7 | 105.8 | 2.23 |
| 60% | 25.1 | 7.2 | 34220.1 | 349.7 | 179.9 | 1.94 |
| 80% | 25.0 | 10.4 | 38863.2 | 461.7 | 259.5 | 1.78 |
| 100% | 24.9 | 15.8 | 44031.6 | 618.8 | 394.6 | 1.57 |
3800KV (16.8V class)
| Throttle | Voltage (V) | Current (A) | RPM | Thrust (g) | Power (W) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 20% | 16.8 | 1.5 | 17311.1 | 91.2 | 25.9 | 3.52 |
| 40% | 16.7 | 4.6 | 25611.5 | 202.2 | 76.6 | 2.64 |
| 60% | 16.7 | 7.7 | 30692.7 | 292.4 | 127.6 | 2.29 |
| 80% | 16.6 | 11.0 | 35219.6 | 380.5 | 182.5 | 2.08 |
| 100% | 16.5 | 16.8 | 40750.1 | 514.1 | 277.8 | 1.85 |
What's Included
- Motor x 1
- Parts bag x 1
Applications
- 3.5in freestyle FPV drones
- Sub-250 g drone builds (as stated)
For selection help (2850KV 6S vs 3800KV 4S) or build compatibility questions, contact [email protected] or visit https://rcdrone.top/.
Details
T-MOTOR P1604 is tuned for 3.5-inch freestyle builds, balancing smooth response with a lightweight motor design.
A compact footprint makes it easier to fit 3.5-inch frames and keep all-up weight down for sub-250 g builds.
The unibell-style construction is built for durability where freestyle impacts are common.
Choose 2850KV for 6S setups or 3800KV for 4S builds to match your preferred voltage and throttle feel.
T-mount hardware with a 9×9 mm hole pattern helps compatibility across more props and frames.
Each motor includes a parts bag with the mounting hardware needed for installation.
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