Intuitive thinking says bigger wheels are better, but let's examine...
Rolling resistance in reality do not decrease linearly with radius, in fact in many experments i have made it has almost no effect.
The mass of the actual wheel may increase with square of radius, so a wheel that is twice the...
Yes that's it, data pairs.
I measured them by putting the motor on a very high place, the motor has a pulley of a known diameter, and i winded many different known wheights... I left the motor accelerate until a terminal speed, when wheighttorque+braketorque=0, then i just measured the speed.
All dc motors/generator use the same force font, current, and it flows through copper en all the cases, i don't see why that much interest in the motor itself.
I can guess light bulbs have non-linear behavior, but that's exactly the opposite that i got, a perfect straight line, and when...
Sorry, i jumped off what i though that was obvious, but nothing is obvious...
When a permanent magnet motor moves, creates an electromagnetic force over the electrons in the copper windings, that can be assumed as a kind of voltage, called "lenz force", that "voltage" creates a current across...
Hi berkeman, thanks for your reply.
Its a 750 watts 48 volts chinese motor, i measured last week a 28 amp top.
But i don't think that's the reason, because at near zero speed the curve at short circuit had a very similar K than 8 bulbs in parallel.( 0.006235 and 0.006153 respectively).
Hi, i didnt know where to put this question cos its kind of multitopic, here is why...
I am working on a better way to take mechanical energy from muscles, i made a teste bench for pedalling in very different ways, including traditional(circular) pedalling, the thing is. I am measuring the power...
Ok i think i got it, and i had the same question.
I think here are two posibilities:
1-The combustion is constant pressure because diesel enters to the combustion chamber in a liquid state and have to reach "flash point" to ignite and maybe, as liquids, they need a not so high pressure to go on...