Muller generator replication by Romerouk

[toranarod]

Be careful about those flying magnets man. We don't want anything happen to MVPs. lol I know people think Tesla is cool for running his motors so fast it fly apart... but I just think he turn it on and find a place for cover. lol

I just burnt out the motor. I hate the smell of burring enameled wire.

I was tying to get to 9000 RPM got to 7900 and smoke from the coils. I was trying an 18 volt battery I think the current got as hi as 7 to 8 amps I was not looking at the meter just unplugging every think. I have some much better motors in one of my models that are faster and not so small with large current demands. these motors come in a verity of loads and power.

The funny thing is I have been drinking that Redox ASEA that I brought from Aaron. that's stuff works so good I usually would have been in bed by now to tired to think.
I am awake think of ways to burn out motors
I am not joking that stuff helps you concentrate a lot better, I am just not so tired as i would normally be.

[toranarod]

Wow, Rod, incredible ! What a huge saving in input watts and a good increase in RPM. And all the drive cicuitry can be dispensed with too !

It makes me wonder why Romero didn't just stick with the motor as driver ?

Do you have a link to the motor you bought please ?


Cheers,

Gary.

I don't have a link as I brought the motor year or so a go. it's 1038 KV type.
I would suggest something a bit lower, slower it obvious that 5000 RPM would be enough.

[MonsieurM]

Hi

I mean did you use your forest for the trees method or not? As I recall your magnet diamaters were about 10mm and the core was 20x20mm, what about the spacing between the core and the magnet, also the wire gauge and the number of turns, and also your coil length?

Thanks!

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

Imagine you are walking through a forest. All around you are trees of different species, age, size and height. It looks pretty random, right? Wrong.

In research funded by the National Science Foundation, Brian Enquist of the department of ecology and evolutionary biology at the University of Arizona and his team have discovered a secret in the trees: Hidden among and within the architecture of the branches are fundamental rules that link the size, shape, age and in fact everything about a single tree to all the trees in a forest.

This rule or code reoccurs as the tree grows, creating a fractal – a repeating pattern – like a spiral of daughter branches emanating from the mother branch or tree trunk.

[hello_all]

how about 2 brushless outrunner with pulleys to run a flyback with some weight for inertia/momentum.. and low rpm on flyback due to gears/pulleys .. and then back to the second outrunner using gears/pulleys acting as a generator ... with different gear to make it run faster on the generator side.. in that case there will be loss but flyback can make it back..

[hello_all]

outrunner setup

attached the setup .. ..not related to this thread but since i am also a plane guy just thinking about those high rpm motors..

[qvision]

I am used to kv meaning kilovolts, what does it mean in this context ?

Also, Rod, how are you coupling the motor shaft to the rotor shaft, lots of these motors seem to have odd shaft sizes like 3.17mm ?

Ah, i see from your pic you maybe machined your own coupler ?

[SkyWatcher]

Hi folks, Hi qvision, KV in motor terms, means, rpm per volt on no-load.

I have been working on another setup, this time with easily obtained 5/16" diameter steel bolts from hardware store as cores for coils.
I know some feel this material is not ideal, though Robert Adams seemed to think they were, if you read information he wrote, he stated that solid cores of iron worked well and they did for me as well in my older Adams motor that ran cold, like a refrigerator effect.
I will be using an external motor drive as well for testing, probably use belts to drive it.
peace love light
tyson

[toranarod]

I am used to kv meaning kilovolts, what does it mean in this context ?

Also, Rod, how are you coupling the motor shaft to the rotor shaft, lots of these motors seem to have odd shaft sizes like 3.17mm ?

Ah, i see from your pic you maybe machined your own coupler ?

I am using a model electric car our boat universal joint the are designed to fit right on the motor and very strong the model car guy put them through hell in this application they are under no stress and they are cheap. you can connect it to the Muller any way you like I did it with out any machining every thing from you model toy shop and my drill press.
would you like a photo?

[toranarod]

Good news the Motor that smoked is still working.
it probably been degraded but for this who cares while i am still learning.
it will go better when i change the magnets and the ferrite coils.

[qvision]

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

[qvision]

attached the setup .. ..not related to this thread but since i am also a plane guy just thinking about those high rpm motors..

Hi hello all (could turn out to be a confusing handle, LOL).

That's an intriguing idea.

[toranarod]

Hi hello all (could turn out to be a confusing handle, LOL).

That's an intriguing idea.

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?

[quantumuppercut]

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?

Looking forward to learn something new and hope the tonic continues to boost your health.

[Slider2732]

Speaking of outrunners...If that motor of yours does blow up, they can be rewound to any kV you desire. Star or Delta, it's a very common practice in R/C.
As long as your magnets don't get too hot and lose magnetism. Rewinding can be done in an evening and while torque isn't so important, but used amperage may be, I would recommend Star.
I fly rewound CD-Rom drive motors on nearly everything (around 7oz total weight of aircraft). Take the motor out of the drive, just rewind it, even the silvery magnet ring stays in place.

*Edit* now that i've actually read the previous page I see the Futaba R/C stuff is in use. I've always wanted to incorporate a flywheel effect Muller type thing into a heli project (gyroscope) but your project Rod is really looking like what I was thinking of
I might not trust my Spektrum gear on something though...imagine a loss of signal in the air with one of these hurtling around

[SkyWatcher]

Hi folks, just thought I'd show what I'm working on. 6 neo magnet rotor, 10 coil/cores, 5 per side. Here is a pic.



Uploaded with ImageShack.us


peace love light
tyson