It’s official: [Engineer Bo] wins the internet with a video titled “Finding NEMA 17,” wherein he builds a dynamometer to find the best stepper motor in the popular NEMA 17 frame size. Like a lot of subjective questions, the only correct answer to which stepper is best is, “It dep...
A dynamometer, the machine typically used to evaluate a car's horsepower and torque, can't actually handle the extreme torque of a Top Fuel car. So, Top Fuel power numbers are calculated by mathematical equations, which can leave some room for debate. Contents Why Is It Called 'Top ...
Muscle strength: Maximal isometric voluntary knee extensor torque was measured at 60° (0° = full extension), using a commercial dynamometer (Biodex System 3, Biodex Medical, Inc., Shirley, New York, USA). Participants were comfortably positioned on the dynamometer seat with belts fastened ...
such as limited mobility, limited independent access to outside facilities/activities and lack of social interaction, present barriers to maintaining physical activity (PA) levels [7]. PA has been shown to have significant positive effects on the healthy ageing trajectories of older adults [8], wi...
We always appreciate [Jeremy]’s enthusiasm and presentation style, and we generally learn a lot from his videos. Whether it’sa CNC table saw,a homebrew dynamometer, orsupersonically melting baseballs, his videos are always great to watch. ...
Most studies have examined the MMG amplitude and/or frequency responses during isometric muscle actions [15–20]. Stokes [6] suggested, however, that "If AMG [MMG] is to be used as a means of monitoring force during functional activities, then its relationship with force during dynamic activat...
The heart of the company is really the test cell, and we have a ‘driver’ from the racing industry (actually he focused on dynamometer tests, never racing in a car!) running most of the full-scale system tests. There’s a desk full of screens and controls, and one graph in particula...
a dynamometer in spite of increasing discomfort. The emotional effort in the first phase of the experiment reduces the ability to withstand the pain of sustained muscle contraction, and ego-depleted people therefore succumb more quickly to the urge to quit. In another experiment, people are first...
To dig into the details, [JohnnyQ90] has built himself aProny Brake Dynamometer. These devices are setup with the motor shaft loosely attached to a lever arm that can push down on a force-measuring device like a scale. With our lever attached, we then power up our motor. By gradually ...
Later, in a much less taxing test, the company put the Model S on a dynamometer at a steady 55 mph, where it ran for a staggering 882 miles on a charge. The company dubs its prototype a proof of concept. The point is to show that real-world ranges far longer than an average ...