2020-02-24

[public] 95.8K views, 3.31K likes, dislikes audio only

Jeremy Fielding

How to build and use a dynamometer for measuring Horse power in the home shop. Links to download models and parts list below.

How to measure the mechanical power of an electric motor.

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Notes:

I did not add quite as much detail as I would with paid plans but hey... you are definitely getting your monies worth!

Link to download files.

https://github.com/jengineer1/Dynamometer

Other references.

Matthias Wandel's Channel

https://www.youtube.com/user/Matthiaswandel

Building my variable DC power supply

/youtube/video/CeF1I18DhNc

Amazon affiliate links

DC power supply: https://amzn.to/2wG9qe8

AC powermeter: https://amzn.to/2Tc7y4x

DC powermeter: https://amzn.to/2TbaJZU

Scale-Load cell: https://amzn.to/2wxRmmf

RPM-Tachometer: https://amzn.to/32j4Ii8

Technical corrections

1. I discuss changing the bearing to allow higher speeds of the test motor. However, the rotor of your braking motor is designed/balanced for a specific rpm. It might vibrate or even self destruct if spun at higher speeds. My motor has survived several test at 21k for an up coming video, but that certainly won't apply to all motors used for this.