Propeller Thrust Meter

cults3d

I wanted to test a new combination of a motor with a propeller, so I started by finding out if our kitchen scales could do the trick. It turns out they can, and not just show weight - you can also lift up the scale pan because it's bonded to it, allowing you to measure thrust in both directions. It's possible to use the "SOEHNLE" max 2000 g model, which I just so happen to have on hand. You'll also need a square tube that measures 20 x 20 mm to fasten your test part with screws M3. To test my impeller, you can attach the housing using the "bracket for impeller." The second part of the video shows a test with the Roxxy Outrunner and a propeller measuring 10 x 6" powered by a 3-cell battery. We measured thrust, current flow, and temperature during this test - unfortunately, we only documented the temperature. However, temperature is crucial when using PLA to mount the motor. Our results showed a residual heat of 68°C - I think it would be wise to print the nose in ABS instead. You can view the entire video here: http://youtu.be/yRqLzA4--oU Be aware that if you use this setup for thrust upwards, make sure the scale pan is tightly bonded and charged more than its possible thrust (like a machine vice). Otherwise, it could morph into an uncontrollable helicopter. Please exercise caution when using this setup, as you'll be doing so at your own risk.