How to Test the Thrust of Propellers

Different propeller provides different flying performance, so this project is just for reference for hobbyists.

Similar projects worth following
For most newbies or to-be hobbyists of drone/aircraft model, propellers are prone to break in plane crashes. So, how to pick or choose the right props would be quite important. But, also not that easy for green hands.

Well, actually there are some tips in selecting the most suitable props (yes, there's no definitely perfect props!!) for your aircrafts.

First you need to know, what's your preferred effect? Steady, agile, or crazy flight?

Thrust of the prop depends on: 1) size; 2) shape/surface area; 3) number of blades; 4) materials

Also take into account the diagonal motors distance, motor power, etc. when choosing.

So if you want higher power, you can use longer props like 6-inch ones, but the agility would be sacrificed. For example, to install an FPV camera on, you need the power. How the prop looks like will also determine its thrust - in the shape of bull nose (BN), hybrid BN (HBN), and pointy nose. Thrust: HBN>BN>pointy nose. Also the number of blades can affect the power: 2-blade, 3-blade, 4-blade, etc.; the more blades, the higher power.

After knowing these determinants, you may still be confused. So let the facts speak for themselves. I'll show you how to use a scale to test the thrust of props. 

View all 14 components

View all 2 project logs

  • 1

    Electronic scale

    3-blade CCW prop -

    Frame arms x 3 (to fix the motor)

    SF motor -

    3S Li-Po battery -

    Radio transmitter -

    Receiver -

    Power distribution board -

    ESC -

    3M tape

    Wire ties

    M3 screws x 4

    L-shape screwdriver

    Prop removal wrench

  • 2
    Power on the scale

    Usually the weighing tray can be uninstalled easily. Just gently take it away. Below, there are slots and a hollow space underneath. We'll fix the motor by tying through these slots. 

  • 3
    Install the motor onto the frame arms

    Remove the bullet cap on the motor with the prop removal wrench.

    Assemble two frame arms, align their holes to those on the motor, insert the screws into the holes, and screw them tight with the L-shape screwdriver. 

View all 8 instructions

Enjoy this project?



Similar Projects

Does this project spark your interest?

Become a member to follow this project and never miss any updates