Buying Guide: THOBBY P1604 Motors
Choosing the right FPV motor is about balancing power, weight, and throttle authority. On 3" and 3.5" micro quads, 1404 motors can struggle under digital HD payloads, while larger motors add unnecessary weight.
The THOBBY P1604 (~11.6g) delivers higher low-RPM torque than traditional 1404/1504 motors while keeping your build well under the 250g limit.
Why Choose a 1604 Stator Over 1404 / 1504?
Cleaner Prop-Wash Control: The ~13.7% larger stator volume over 1504 motors provides extra torque reserves. This allows lower Dynamic Idle settings (~1,500 RPM) without prop-wash, resulting in smoother recoveries and longer inverted float times.
Low-End Throttle Authority: Stronger torque in the bottom 30% of the throttle range easily handles the added weight of digital HD gear (DJI O3, Walksnail) or naked action cams.
Minimal Power Penalty: Adding only ~1.5g per corner over 1404 motors results in a minimal ~4A increase in peak current draw, making it fully compatible with standard 20A–30A AIO ESCs.
Motor Lineup Comparison
| Motor Model | Weight | Target Build Class | Key Performance Profile |
|---|
| T-Hobby F1404 | ~10.0g | Ultra-light 3" Toothpick & Long-Range | Ultra-lightweight and efficient; lower torque under heavy HD gear |
| 1504 Class | ~11.8g – 15.0g | Standard 3" & Light 3.5" | Standard power output across traditional micro platforms |
| THOBBY P1604 | ~11.6g | 3"–3.5" Freestyle & HD Builds | Lightweight Unibell, high low-end torque, sub-250g optimized |
| MEPS SZ1604 | ~12.0g – 12.5g | 3.5" Hardcore Freestyle / Micro Racing | Reinforced structural durability for extreme crash resistance |
| THOBBY P1804 | ~15.6g | 3.5" Power Freestyle & 4" Toothpick | High raw thrust for heavier loads; adds weight on sub-250g builds |
KV Selection Guide
P1604 3800KV (4S Micro Freestyle & HD Rigs):
Target Setup: 3"–3.5" Tri-blade props + 4S 650–850mAh LiPo.
Characteristics: Direct, snappy throttle feel. (Pro tip: Scale throttle to 80%–85% in Betaflight for smoother stick resolution).
P1604 2850KV (6S High-Voltage or 4" Long-Range):
6S 3.5" Setup: Pairs with 6S 450–550mAh packs for high power-to-weight efficiency with reduced amp draw and less motor heat.
4" Cruiser Setup: Pairs with 4" props on 4S LiPo/Li-Ion for smooth low-speed control and extended flight times.