The Newman Motor Challenge ! Answered
I was recently approached by someone claiming the old Newman Motor wouldn't be good for anything.
Well, I was a little bit offended by this as I already had my little toy version of it as kid.
At that time though it really was just a toy for me.
Critics still say the Newman Motor is nothing more than some interesting machine.
And even the biggest followers will admit it is not a free energy machine, just a very efficient one.
I experimented with, what some call fringe science, now for about 30 years.
And it all started with math and my interest in unusual ways of dealing with problems.
So what's behind the challenge?
The original design was suprisingly simple as you can see in the above Wiki link.
Just a spinning magnet in a (split) coil.
What you don't find anywhere though is real details on the how to.
Sure, you need to have some sort of contact linked to the rotation and timing is critical but what does it all do?
You can build a drt simple model in a few hours with stuff you might have around already.
Quite a few Youtubers are happy to share their creations.
The actual challenge is to come up with what Newman really did inside his drum.
And also why I think it is not the full potential his machine had.
Build a simple Newman motor and check for how long you can let it run on a charge super capacitor.
Then sit back and read some of the other magnet stuff I wrote.
After that come up with a better design ;)
I started to create some 3D models that need testing once I find more free time - should take some leave one day..
But for those with little patience and an interest in the Newman Motor I decided to share my current idea:
For some it might be really confusing although they know motors and magnetic fields.
Those just playing with magnets might have it easier for once as they can pretend they followed my thoughts ;)
The original design used two coils and a rotating magnet.
If you consider how the magnet creates an electromagntic field in the coils then you have to wonder right away how it can spin.
And most designs will indeed need a push start to get going!
You can't have electricity produced without the magnet spinning and you can't make it spin without electricity!
The current from the battery or capacitor can only flow at the short moment of contact on the axle.
This moment needs to be timed "mechanical" as we don't want to waste any power on not required electronics.
If you ever bothered to check the timing of a Newman Motor then you realised the collapsing electromagnetic field at the moment of contact actually is in reverse to what the manget has in that position.
Unlike any normal motor it means the magnet produces most of the power the coil needs to make the rotor spin!
So far for the well known facts, now for my fiction:
I would like to call my version the Aussie Newman Motor as all things downunder are just different ;)
Here are my current desing mods, that I freely share so everyone can benefit form many years of experimenting to save a lot of time.
1. Instead of two coils a not-really-bifilar coil is centered on the axle.
The coil is created like two stacked relay coild that have no bobbin and a "dint" to allow the axle to pass through.
Without the big gap of the original less of the magnetic field strenght is lost and the coil is far closer to a homogenous magnet.
2. The timing done by salvaging a simple DC motor's contacts and brushes.
This allows for far higher currents and if the salvaged motor had enough poles also for a very short "burst".
3. The axle contact is made with a cleaned steel bearing.
After cleaning very conductive copper based lubricant is used in tiny amounts to prevent corrosion and provide a lower resistance.
The clear benefit is that with the new timing system a lot more current can flow.
Initial tests with a mock up model showed an increase in run time from the capacitor of about 15% already.
With proper bearings and a salvaged DC motor I hope to reach 18 to 20% more than the original design.
Now why the DC motor if a reed contact or hall effect sensor would be even faster and with less resistence?
Neither can handle really high currents without additional electronics ;)
Plus of course I wanted to leave the door open for the Aussie Newman Motor 2020.
You might now say "Why bother if the above improvements are already so great?".
If you followed my elsewhere for a while then you know the Newman Motor is only 2D but I prefer 3D or more harmony if you like.
Right now the imagination of people re-inventing Newman's machine is limited.
They try to get on the horse from behind - literally.
Fancy electronics, machined parts and so on.
But they never go 3D ;)
You got it? :)
There is only two coils!!
The magnet rotates, same as the contact on the axle.
One set of coils for each contact the salvaged DC motor has.
Each set aligend to the corresponding contact.
And now you will ask "How do you plan to connect that to a single DC power source?
Well, that is why it will be the 2020 model - my time for tinkering is sadly limited because I still need to work to support myself.
But if you consider that the original as a good model can run for over 10 minutes on a supercapcitor then ask yourself how long it could run on 4 or even 8 coil sets.
And although there is no such thing as "free energy": There will be still space for more coils.
Or other coils to just provide electricity that does not power the motor.
Critics will now see their chance and state that if we add a load to these additional coils then this will cause a strain on the system.
Of course they are correct here.
If, however, the load is mechanical then the motor needs to supply basically the same additional energy.
Plus all mechanical losses.
The question is: How much mechanical load can we add before the motor is down to the same efficiency of a very efficient DC motor? ;)
And what if our Aussie Newman 2020 would actually violate the laws of physics?
We can calculate how much electrical energy would be required so a given motor produces a fixed amount of torque.
Or we can just measure it, the beauty of science...
We can do the same in reverse of course.
Let's say a mechanical pump would require 500RPM and 100Nm of torque to pump 100 liters per minute.
Then we could calculate what sized motor we need to drive the thing and how much power the motor would need.
So again: What if the Aussie Newman 2020 would require far less than what science makes us think and still does this job on a simple 12V lead acid batty of 4Ah?
Just saying... ;)
I hope to have a presentable and working 2 coil system by May, so stay tuned!
In case you are faster or even beter then of course feel free to show off your results or to post a link to your Instructable so everyone can verify it.