NEMA17 motors are ubiquitous, and sometimes they even look identical. How do we know which motors will perform the best, and is there even a best motor for every application? In this video, we test five NEMA17 stepper motors with a dynamometer and examine their speed-torque curves to find which motor performs the best. Components used (affiliate links): LDO Motors 42STH48-2504AC - SPEEDY POWER ( ) LDO Motors 42STH48-2804AC - SUPER POWER ( ) STEPPERONLINE 17HE19-2004S ( ) Usongshine 17HS8401 ( ) JKONGMOTOR JK42HS48-1684-08AF ( ) TMC2209 Stepper Motor Driver ( ) TB6600 Stepper Motor Driver ( ) TMC5160 Stepper Motor Driver ( ) KORAD Bench Power Supply ( ) HX711 Load Cell Amplifier Module ( ) Optical Encoder ( ) Chapters: 00:00 Introduction 01:32 Specifications 02:56 What is Torque 04:21 Dynamometer 05:54 Data Processing 06:57 Results 10:41 TMC2209 at 24V 10:58 TB6600 12:42 24V, Finally 13:45 One Last Thing 14:53 Preliminary Conclusions 17:24 More to Come