Hand held fan / blower using 130 v motor V2

How much performance can you really get out of a small 3V motor? In this project, I take a standard 180 DC motor powered by a single 18650 battery and push it to its limits by building two different 3D printed blower designs. Both versions use the exact same components—but the results are completely different. One design moves more air, while the other builds significantly more pressure. Using smoke visualization and sawdust testing, I break down how airflow, pressure, housing shape, and impeller clearance affect real-world performance. This is part one of a series focused on squeezing maximum performance out of small motors using better design—not more power. In the next version, I’ll be upgrading to a more powerful motor and refining the blower housing to try and combine both airflow and pressure into a more efficient design.

Parts Used:

130 DC motor (3V) https://amzn.to/4mCSDgR

18650 lithium battery https://amzn.to/489lTGb

1S BMS (USB-C charging) https://amzn.to/4sMG8B1

DC motor speed controller https://amzn.to/4cl4dtI

3D printed blower housings FILLIMENT https://amzn.to/3QMb8n4

In this video: DIY blower build 3D printed centrifugal fan design Airflow vs pressure comparison Smoke airflow testing Small motor performance testing

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