Muller Dynamo

[k4zep]

E2, this is not the coils used in the 'build' but a couple of test coils, the ferrite one from way back, the somaloy one fresh made.

Like everybody i thought the magnet on the end of the core was the be all to end all. But I suspect that the magnet is just compensating for the inefficiencies of ferrite.

The big ferrite coil is 28 X36 mm. It is using the "core should extend out the back" principle.

http://www.totallyamped.net/adams/index.html

Around page 4 or 5

I get 1 watt from this coil. With a stack equal to the rotor stack length the output goes up to 1.8 watts...nearly double, right?

But have a look at the new somaloy coil...it is machined from a piece of 1 1/2 PVC. The coil is only 12 mm wide, 240 turns, the part under the red tape. With the same gap, rotor, RPM, I get 4.68 watts. With one 1/8 thick magnet I get 5 watts.  The effect seems to go away with better cores.

Ron

Hi Ron,

To quote you"But have a look at the new somaloy coil...it is machined from a piece of 1 1/2 PVC. The coil is only 12 mm wide, 240 turns, the part under the red tape. With the same gap, rotor, RPM, I get 4.68 watts. With one 1/8 thick magnet I get 5 watts.  The effect seems to go away with better cores."

Is that a hollow core of somaloy and if so, which type.  I know they started off with the 500 series, then the 700 series, then the 1000 series and it continues.  Is the gray cover material under the red tape just part of the machined PVC?  When you say 4-5 watts, what is the rectified voltage and current, gap, picture of your generator?  I apologize for all the questions but just need to know as I go along.  Also, your source for the somaloy?  When you say effect goes away with better cores, what type of cores are you referring to?  What effect, I haven't had much coffee this morning so a bit dense.

Thanks
Ben K4ZEP

[freenergy850]

this is the important information. How do we build a generator that runs faster when you apply load.
putting the magnets on top of the coils does have a positive affect when you find the right combination.
my output when up by an extra 11.5 volts under load. to 31 volts after the capacitor.
but the extra force destroyed my little bearing.

here is some photos of the motor


I notice you have 8 fwbr, what is the eighth fwbr for? Are you only driving with 1 coil set?

So, do you recommend we dont use hard drive bearings?  Because i was about to use the same one you've used here. Should i just use an axle and a stronger bearing to save the trouble of bearing failure from the hard drive bearing? Thanks, and nice build here!

   

[i_ron]

That totallyamped link has some nice info.  Is the somaloy a high perm material?  I've been looking all over for some small rods in high permeability material like metglas or similar but can't seem to find any. 

   You are getting 5 watts out of one somaloy coil?  That sounds great.  Not sure what speed you are using or how much power to get that but if it's anywhere close to Romero's build it would seem you could loop it?

That was with an RV belt drive test setup running about 1140 RPM. But the draw goes up with the coil under load.

I was aiming for 1034 RPM but missed the mark, lol

Ron

[i_ron]

Great observations and feedback Ron.

Out of curiosity, have you tried a heel end core using the somaloy as core material?
Just wondering if the same effect of increasing output applies, or whether the heel end only improves the output when the core material used is not as efficient as the somaloy.

Cheers, keep up the good work.

KneeDeep

Hi HT,

yup, the somaloy coil is a heel design, the core is 24.9 mm long, the winding is 12 mm long. There is a 12 mm (approx) plain portion of PVC that I was going to use for three tapped holes to mount the finished coil if the test was a success.

Yes I believe the heel design works regardless of the core material.

In this case, with the magnet on a 2 mm plastic spacer, it does improve the output, whereas separated by the stator plate thickness,as R suggested, doesn't work.

Kind regards

Ron

[i_ron]

HEY RON

did you get those somally cores from Phil Wood a few years ago?
He sent me a couple dozen and am thinking of trying them out later on -I have some neo magnets that slip right into the insides of them too...

Dont pass over what a "regauging" magnet will do to GENERATOR COILS (and drive coils too)
I really think this is the key to Romero's success  - he got those magnets to cancel out the evil lenz-lug pullback in all his generator coils by finding the right balance. People do it with motor/drive coils (like in Bedini patent he ahs slinding magnet in back of motor-coil core) but Romero is first person I have heard of to do the regauging-magnet trick to generator coils induced by neomagnets and look what happened.

Hi Doug,

Not passing over the "regauging" thing, just reporting my results. The output goes up with them but also the draw goes up the exact amount too.

Doing as R suggested and running it from a motor, one of my RV's, easy to see what the draw is then. What I said was with the somaloy core the bias magnet has little or no effect when spaced out the thickness of the 1/4 inch side plate, as R said to do (he said 10mm). With the new coil design there is a minimal effect on the output but a nearly invisible drag with only one 1/8" neo on a 1/16 plastic spacer on the somaloy core.

Static drag with the ferrite using a 200mm arm is 370 grams to break free.
With FOUR magnets on the end of the ferrite this is reduced to 270 grams.
So most of the drag is still there... looking for the coil load interaction but haven't found any yet.

With a set of 9 double coils the output was within one watt of being equal with the input rise, no bias magnets as I said because of that side plate design.

The things not tried are coil hand and Litz wire...

Yep, the somaloy cores are from Phil, most times about twice the output, half the drag.

Ron