Muller generator replication by Romerouk

[elias]

will do the photos today I will also do a quick Vid for YouTube looks cool if nothing else. at the speed they can get to it maybe important to think about balancing. vibration will cost energy.

because of load it takes 7 volts to do 5500 RPM this is where the Lenz law effect will show drag or no drag the out runners will uncover the truth.
great analysis tool?

Thank you for the info on your coils, Happy that your outrunner is still alive. Is those motors identical to those found in computer fans? I might get one of those large fans and use it as a prime mover.
I am looking forward to see a self running device! Keep it up. Your work is an inspiration to all of us.

[qvision]

@Tyson

How many magnets/coils line up at the same time during rotatoin with your setup, i notice you haven't gone the even/odd route ?

@Elias

I don't think they are the same as computer fan motors.

[stevie1001]

will do the photos today I will also do a quick Vid for YouTube looks cool if nothing else. at the speed they can get to it maybe important to think about balancing. vibration will cost energy.
because of load it takes 7 volts to do 5500 RPM this is where the Lenz law effect will show drag or no drag the out runners will uncover the truth.
great analysis tool?

Tora,
Thank you for all info you share here.Absolutly great.

Your proposed test with the external electromotor is a good one to find the lenz borders vs speed.

Yesterday, my big muller replica, had it first rpm,s. After trying multiple ways of hooking up the two bifilar coils to the circuit, only one came out good.
The rotor is doing a couple of hundreds of rpm on just 3 watts.
And thats just one set of drivingcoils and no others cores on the setup, with all clocking you can have.
Coils to close to the magnets is not good.

[SkyWatcher]

Hi qvision, it is odd/even setup, 5 coil/cores on each side of 6 neo magnet rotor.
Going to use external drive first to achieve speed up effect and this way I know what rpm will be needed to do so, similar to what rod is working on.
peace love light
tyson

[toranarod]

the photo

Thanks Rod and Tyson for explaining.

RPM per volt means that Rod's 1038 kv will give ~5000 RPM at 5 volts then ? That's pretty wild !

Rod i found some shaft couplers that will do for me with the motor i found on ebay, i can't wait to try this, but i would still like to see your pictures if it's not too much trouble

[elias]

that's a really beautiful motor, I use a simple hose as a shaft coupler.

[qvision]

@ Stevie how big is big ?

@ Sky, oh i see 10 coils meaning 5 per side.

@ Rod thanks for photo, very nice.

@ Elias, a hose or plastic tubing ! I never thought of that, what do you use to keep it tight ?

[elias]

@ Elias, a hose or plastic tubing ! I never thought of that, what do you use to keep it tight ?

simple hose mounts like this one:

[elias]

I just wanted to mention this, since you are talking about trees/forest, there are some rules that need to be respected for you to be able to do so....

so just FYI:


Seeing the forest through the trees

Really thanks for that! It makes sense. The forest being a whole organism. Viktor Schauberger said that usually you cannot find the same species in a forest growing together as it creates competition and will hinder their growth, instead, different species grow together that are complimentary to each other. Short rooted plants grow near long rooted plants, or tall tree grows near trees that need shadow, and etc ...

[hello_all]

About the brushless motors - outrunners

Motors you can see there are many used from various brands but you need a speed controller for them to work ..

[qvision]

@ Elias, thanks for that i will try those.

@ Hello_all, so these motors can't be speed-controlled from a variable DC power supply ?

[thaelin]

@ Elias, thanks for that i will try those.

@ Hello_all, so these motors can't be speed-controlled from a variable DC power supply ?

These motors are basically wired as 3 phase and require that kind of controller. As said, some can really be amp eaters too. Have two that can take 12v at 15 amps Whew! $75 each new, but then didn't pay that much my self.

thay

[gyula]

Hi folks, just thought I'd show what I'm working on. 6 neo magnet rotor, 10 coil/cores, 5 per side.
peace love light
....

Hi Tyson,

I can see those bolts you use for fixing the coils in place on the stator and always wonder how much eddy current losses they may involve? Have you thought of that or have some info whether the bolts get warm when the rotor magnets pass by and cause induction in them?
Maybe this loss is not significant, I never used bolts as cores (I understand you are happy with them, solving securely the holding of the coils in place with them). If you wish to test this for eddy losses then you may wish to check the bolts temperature when all of them are in place and you use an outside prime mover for speeding up the rotor. Just run the rotor for a minute or two and do not load any of the coils, then stop the rotor and touch the bolt heads with your finger how warm they are if any. Hopefully they will not be warm...

Keep up the good work.

Gyula

[hello_all]

Controlling the Outrunner: Sensorless or Sensored?

some of the people modify them for electric scooters with hall sensors , and some are really big ones with huge amp draws , best is to get a controller for them..

@ Elias, thanks for that i will try those.

@ Hello_all, so these motors can't be speed-controlled from a variable DC power supply ?

[toranarod]

These motors are basically wired as 3 phase and require that kind of controller. As said, some can really be amp eaters too. Have two that can take 12v at 15 amps Whew! $75 each new, but then didn't pay that much my self.

thay

Yes absolutely
Do your home works before you buy, there are thousands of theses on the market in all dimensions and current ratings. They are so cheap with speed controllers and every thing. All you really need is a PWM servo controller.

They can do speeds we do not need for our research. The motor are deigned to make a model Plane fly. They have enormous horse power and will pull large currents while doing this.
We do not need them to do that. I was able to throttle my motor back to 4500 RPM and pull 1.2 amps to do it. Sure it will pull 8 amps at 9000 RPM but they can be made to work very efficiently for our application.



If you buy the right one for you needs they can be very useful I am so surprised they have not been used before for OU.