I thought one of the great things about electric was the fantastic low end torque.Most of the motors with good power to weight are high rpm. Fortunately, a belt reduction is a lot easier to design for an electric motor than for an IC motor. Some of the outrunner motors may not have suitable bearings for belt drive, however.
Maybe this will be of some help to you or others, it is just a minimal amount of information.I thought one of the great things about electric was the fantastic low end torque.
That is true, until the flight of my prototypes you only have my word.What would you say that would convince anyone that the motor you produce will be any better than a Chinese motor?
I only intended to draw out an answer along the lines of, what grade and quality of materials would go into a motor.That is true, until the flight of my prototypes you only have my word.
Also I will publish bench test and coherent values of power to weight ratios.
But for now I have only that.
Of course that at the same apparent size the motors will perform kind of similar. Core material and magnet quality can make a difference. But generally they go cheap in copper quantity.I only intended to draw out an answer along the lines of, what grade and quality of materials would go into a motor.
There are so many variations from "it will work" to "I can't afford that" that many people don't have a clue why some motors are able to perform at many different values when they appear to be the same in physical dimensions.
Electric motors can briefly produce much higher than rated torque. Torque is directly proportional to current in the windings. Resistive heat loss in the windings is proportional to the square of the current. Many motors are fan cooled, so the cooling increases with speed. You end up with motors that have an increasing continuous torque capacity with speed. What motors can do briefly until things overheat and what they can do continuously are very different. For less than a second, you can run most motors at 10 times continuous power. Hold them there, they will soon let the magic smoke out.I thought one of the great things about electric was the fantastic low end torque.
I've got a few kicking around with shorted windings right out of the box... QA/QC is pretty pathetic at times. But they make good cores.I've just not come across poorly wound Chinese motors yet. Not filling the slots 100% is a heinous crime!