t hobby p1604 fpv motor for 3.5 inch

T-HOBBY P1604 3.5" FPV Motor | High Torque for Sub-250g Freestyle

About T-Hobby P1604 3.5''Freestyle FPV Motor

T-Hobby P1604 is a lightweight, powerful FPV motor designed for sub-250g freestyle drones, offering smooth performance, high thrust, and durable CNC build for 2.5–3.5 inch builds.

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Top highlights
  • Designed for High Torque and Agile Flight.
  • Ultra-Lightweight for Sub-250g Builds.
  • Smooth, Responsive Control.
  • Vibration-Reduced Flight for Stable Footage.
  • Durable Construction for Everyday FPV Use.
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Check out our 3.5 Inch Freestyle FPV Motors, all FPV Motors Collection and the rest of our T-HOBBY Products!

Smooth & Controlled Freestyle Flight

Optimized for 3–3.5″ sub-250g freestyle drones, the P1604 delivers smooth, low-vibration power output for precise control and confident freestyle flying.

pc thobby p1604 motor for 3.5 inch

Ultra-Lightweight Design for True Sub-250g Builds

At just 11.6g, the P1604 gives builders more freedom when tuning sub-250g freestyle setups.Less motor weight means better efficiency, improved agility, and more room to balance battery size and flight time — perfect for 3.5″ lightweight freestyle drones.

pc thobby p1604 motor freestyle

Lightweight Strength, Smooth Performance

CNC-machined aluminum housing ensures strength without extra weight, while precision bearings and winding deliver smoother, quieter operation with reduced vibration and improved efficiency.

t hobby p1604 lightweight strength smooth performance

Built for Lightweight Freestyle Flying

From parks to urban spaces, the P1604 delivers reliable performance for everyday freestyle flying.

pc thobby p1604 motor applicable scenarios

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 ModelWeightTarget Build ClassKey Performance Profile
T-Hobby F1404~10.0gUltra-light 3" Toothpick & Long-RangeUltra-lightweight and efficient; lower torque under heavy HD gear
1504 Class~11.8g – 15.0gStandard 3" & Light 3.5"Standard power output across traditional micro platforms
THOBBY P1604~11.6g3"–3.5" Freestyle & HD BuildsLightweight Unibell, high low-end torque, sub-250g optimized
MEPS SZ1604~12.0g – 12.5g3.5" Hardcore Freestyle / Micro RacingReinforced structural durability for extreme crash resistance
THOBBY  P1804~15.6g3.5" Power Freestyle & 4" ToothpickHigh 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.

Size

thobby p1604 3.5 inch freestyle fpv motor drawing
thobby p1604 3.5 inch freestyle fpv motor contents

Specification

P1604 Specifications 
KV
Configuration
Shaft Diameter
Lead
Weight (Incl. Cable)
Voltage
Idle Current (10V)
Max. Power (10s)
Peak Current (10s)
2850KV12N14P2mm24#120mm11.6g25.2V0.4A394.6W15.8A
3800KV12N14P2mm24#120mm11.6g16.8V0.8A277.8W16.8A
P1604 Test Report 
Propeller
Type
Throttle
Voltage (V)
Current (A)
RPM
Thrust (g)
Power (W)
Efficiency (g/W)
GF3520-32850KV20%25.21.419580.2104.135.42.94
40%25.14.228436.5235.7105.82.23
60%25.17.234220.1349.7179.91.94
80%25.010.438863.2461.7259.51.78
100%24.915.844031.6618.8394.61.57
3800KV20%16.81.517311.191.225.93.52
40%16.74.625611.5202.276.62.64
60%16.77.730692.7292.4127.62.29
80%16.611.035219.6380.5182.52.08
100%16.516.840750.1514.1277.81.85
thobby p1604 3.5 inch freestyle fpv motor test

Recommendations

Reviews
  • a***********s
    Verified

    Mepsking motors and stacks are legit!! Powerful and withstand many crashes , their staff is very friendly and products arrive quickly and in good condition , try them! I am very happy with the neon ,the sz1604 , the mini stacks, the 30x30 stacks and these P1604 are great too!

    Optoins:3800KV*4pcs
    Replied by MEPSKING:Thanks for your amazing feedback! Really glad to hear you’re enjoying the motors, stacks, and overall experience with Mepsking. Great to know everything performs well. Appreciate your support—happy flying and enjoy all your builds!
  • g**********n
    Verified

    Motors were good

    Optoins:2850KV*4pcs
    Replied by MEPSKING:Thanks for your support! We're happy to hear the T-HOBBY P1604 motors are performing well. Enjoy your flights, and we look forward to powering more of your FPV adventures!
  • R*********r
    Verified

    Strong torque for its size, feels responsive on a 3.5" sub-250 build. Efficiency is decent for mixed freestyle.

    Optoins:3800KV*4pcs
    Additional reviews after 34 days

    After tuning rates a bit, it flies even smoother. Good balance overall.

  • K***********z
    Verified

    Installed on a sub-250g 3.5" build, good torque for its size and smooth in mid throttle. Easy to mount and balance was decent out of the box.

    Optoins:2850KV*4pcs
  • 1***********0
    Verified
    Vine Voice
    MEPSKING Vine Customer Review of Free Product

    The motors arrived very quickly from a local warehouse. They look very well-made and are made of high-quality materials. They're really lightweight, making them perfect for building a 3.5-inch FPV drone up to 250g. I'm starting a drone using these motors soon, and I can't wait to see how they perform in flight and how the drone will fly with them. The kit includes the necessary screws and spare parts for any repairs. I highly recommend them!

    Optoins:3800KV*4pcs
    Replied by MEPSKING:Thank you for your feedback and recommendation! We’re glad you’re happy with the build quality and lightweight design, optimized for 3.5-inch FPV drones. Wishing you a smooth build and great flights—feel free to contact us anytime! 🚀
  • b*********r
    Vine Voice
    MEPSKING Vine Customer Review of Free Product

    i have absolutely no problem with these motors especially for free there great quality fast shipping and they really rip thanks for the free motors the membership is really worth it.

    Optoins:3800KV*4pcs
    Replied by MEPSKING:Thank you for the great review! We're thrilled to hear the motors meet your expectations and that you're enjoying the membership benefits. Your support means a lot to us—happy flying!
  • r*********f
    Verified

    Jó termékek. Vegye mindenki*******

    Optoins:3800KV
    Purchased 2 times
    Additional reviews after 29 days

    Nagyon király motorok

  • D**********r
    Verified

    Nutze es auf einem 3.5" Build, genug Drehmoment und läuft sauber im Flug. Bestellung war unkompliziert.

    Optoins:3800KV
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