Muller Dynamo

[Tcanuth]

Ive read through as best i could and i didnt see anything in the PDF but,

im looking into replicating Romeros original design and i am unable to come up with the type of drive motor he used.

Reading through, i can see he said he used parts he had on hand and said he used computer parts quite a bit.

Anyone recall or know what exactly was used?

[e2matrix]

Sorry about that  . I am learning how to work with this moderator's new job. It is pretty cool and difficult to be honest with you, but I like it. I am TRYING to keep it clean and focused. May be next time I will only remove the content of the post and leave the link.

I guess one can see how much is not in focus by simply looking the other 2 threads i created trying to be honest to this thread and the members points of view (which are vary valuable).

I am NOT trying to be bias or discriminative at all. So, please guys, be patient with my mistakes as I learn this thing. I really respect everyone's opinions even when they are in way out of line. We learn from each other. Now enough of my own "not in focus".

Today I am building my stators and the stable set. I have the rotor with very good bearings and a 12mm rod. This can handle easily 20000rpm (if it happens). I will be using for the first cut relay coils as I explained on my other thread (Muller for experimentalist). I bought enough to build two machines.

Fausto.

Fausto,  no problem as I was just teasing a bit.  You are doing a good job. 

What have you found to use for bearings?  I think this can be an important factor and the smoother and stronger the better.  Under consideration: ceramic but needs to be able to lay flat, VCR parts, hard drive bearings, small thrust bearing.  I tore apart an old Apple laser printer but didn't find anything good for a bearing but found lots of other great parts.  They really went all out on quality in early 90's laser printers as I believe those were selling in the thousand dollar plus range IIRC.  I even found a ferrite coil in it exactly the right size for this build - basically same as the sewing bobbin coils but entire spool is ferrite in shape of a bobbin.  Wish I had another 17 of those.   

[altair]

Hi KONEHEAD !

it's great to read your comments and reccommendations here. Your reputation preceeds you, anywhere you go. 

You wrote: Bill Muller also told me is that "all the amps is made on the first couple of layers of the coil against the core" which is pretty intersting...

If we were to extend this reasoning further, would it mean that a larger diameter core with less wire (and hence shorter coil) would be more efficient ?

And regarding the use of magnetite powder & fiberglas resin to make cores, how do you think the resultant core magnetic parameters compare with say, ferrite or iron dust cores ?
I mean, is it worth the trouble to cast our own cores, or would we get better performance from off-the-shelf standard ferrites or similar ?

Thanks for your advise !

Altair

[maw2432]

I know this may be a stupid question to some of you but I have to ask.  Please help me understand all this AC to DC and back again stuff. 

My understanding is the design of the generator goes from AC to DC with the FWBR's.  Then the DC to DC converter is used to control the amount of power to the driver cores so the motor can be a self runner (with power left over).   

My question is this,  if there is all this excess (OU) power coming from the motor/generator why not just use one of those AC to DC power supplies like the selectable DC out supply I have for one my laptop computers and eliminate all the FWBRs?


Second question,  does anyone know if a Forstner drill bit is ok to use on acrylic?

Thanks
Bill

[REDCAR1957]

Ive read through as best i could and i didnt see anything in the PDF but,

im looking into replicating Romeros original design and i am unable to come up with the type of drive motor he used.

Reading through, i can see he said he used parts he had on hand and said he used computer parts quite a bit.

Anyone recall or know what exactly was used?

Tcanuth
You need to go back to the beginning of this thread the motor
is the coils he used to generate and also power the rotor
with the litz wire
kc