pneuphysics

Just to be clear, when you say,

"that coil bugged the heck out of me to where i was reduced to winding a string around a dowel rod and flipping it end to end. I do not know why but it did not give me the wave form i wanted until i rewound it."

I assume you mean that you rewound one coil so that they are like I depicted in the lower part of my lame drawing, right? One coil is CW, and the other coil, the on the same core but the other side of the non-magnetic shaft, is CCW, right?

Do you think you could diagram that very clearly for everyone else's benefit so as to eliminate any further confusion, please and thank you?

__________________
 

Sure Kent I will get it done tomorrow if I get time at work. I will try to explain it differently for now. 2 coils stacked on top of each other like in my picture. both bars with magnets are in magnetic lock and not rotating from the motor end the top coil has a north magnet facing the coil core and that coil is wound ccw the other end of that same top coil has a south facing magnet in front of it. Back to the motor end to the bottom coil it has a south facing magnet in front of it and its coil (Bottom coil) is wound cw and at the other end of its pole piece is a north facing magnet.

Make sense? No special wind just one 4 filar twisted 18ga. and 1 22ga. twisted in with them wound cw on one coil end to end and the same second set of twisted wire wound on the other coil ccw end to end.

Hope this helps
Drawing tomorrow - i also did a drawing tonight of the shaft, magnet bars and the coil holder with exact dimensions. I will scan tomorrow. Also I have a drawing of the pulse shapes I was getting before I rewound the coil. Might be interesting to some that see them in their work.

Take care,
Pneuphysics

__________________
 

Kent, (Pneuphysics),

Remember, Pneuphysics has built a variant of the G-Field...only 2 stationary coils with rotating magnets. This is not the Kromrey per say, although I believe the G-Field was built from learning from the Kromrey.

I believe my diagram is what Pneuphysics is trying to say .....
(Pneu... correct me if I'm wrong...) this is similar to post #220 but with only 2 stationary coils... not 4. Note the similarity if you consider the the coils on each armature to be a single coil.

Timm :cheers

__________________
 

Image didn't go through the first time.... sorry

Attached Images

Pneuphysics.jpg (82.8 KB, 40 views)

__________________
 

Hi Timm,

This is exactly how I have my coils arranged on my G-Field.

__________________
 

Hi all,
Timm invited me to help :-)

I've got just to page 6 (incredibly lot to read)...

be back soon (have to go at moment)

RE: Al shileds:

Might it be the coils received "something" other than what they should (current was surely shorten in aluminum)?

RE: model in question:

Has anyone noticed the whole model cam be made on a lathe ;-) (so clever)...

be right back ;-)

P.S.

I posted also to get e-mail notification further down this thread ;-)

P.P.S.
Post spreadsheets as JPEG is aplicable?

__________________
 

If you just want to show us your results then posting a spreadsheet as JPEG is OK.

But, if you post a spreadsheet as a JPEG then we can't download it and use it as a spreadsheet.

If you want to share your spreadsheet as a useable spreadsheet then email it to me and I can post it on my website like I've done before for this group.

DonL

__________________
 

FYI.. Don't go to far with the coil drawing until Pneuphysics confirms it.
This was my interpretation of his explaination above..

Timm

__________________
 

xpskid -

Exactly the same as what i have, you are correct. I see the kromrey and gfield as exactly the same animal with 2 active parts in one config part 1 is stationary and 2 is rotating - the opposite is so in the other animal. Bedini mentions in his video #10 the kromrey stresses the gravity wave. Same thing the Gfield does. Just my opinion but the way I see it. I am open to listening to any other interpretation.

Hey I heard someone say the kromrey wave was supposed to look like a figure 8? Did i misread a post or is that what you are looking for?

Happy OUing,
Pneuphysics

__________________
 

Ok here are the specs on the un it I built - No ferrous metal in the flux paths - all glued in those regions. not even any screws.

Also I included my lame coil drawing that does work but is wired in parallel giving 1/2 the output. Same waveshape.

Also I included an interesting concept that i drew from a post I read a few weeks ago on a Kromrey build.

Hope this will all fit
Pneuphysics

Attached Files

	Gfield Specs1.pdf (215.8 KB, 104 views)
	CoilWind.pdf (104.1 KB, 99 views)
	KromThought.pdf (67.8 KB, 96 views)

__________________
 

Thanks Pneuphysics !! I'll buy the first round

Curious .... Where did you see this post on the Kromrey build ?

Timm

__________________
 

Your more then welcome
I do not remember but if i run across it again I'll share. it struck me cuz it said either all north out or all south out.

Any questions please ask

__________________
 

Hi Pneuphysics

I have been rounding up parts to build a motor/generator very similiar to your G-field Kromrey. I'm going to use 6 magnets on each rotor and 4 coils. The big defference is 1 of my coils is going to be used to drive it, hopefully that is. I'll be using a standard or bipolar Bedini circuit with both rotors being driven from each end of the coil. I'm still trying to decide how big a rotor I'll need, hopefully less the 7" in diameter. My coils are Quadfilar 20awg 150ft. With 4 coils and 4 strands I'll be able to try multiple variations of drive and generator set ups.

Dont know if you guys have seen this page or not IDEAS AND MOTORS make sure you scroll all the way thru it.

__________________
 

Welcome Mark

Sounds like a very interesting design. I would be curious to see a rough drawing if you would like to post one. Did you say 1 set of coils to drive it or 1 coil? Cool idea.

I Have seen the Motor Ideas - hard to decide what to replicate first. They all look like fun

Good luck Mark,
Pneuphysics

__________________
 

Mark: I think that I can visualize what you are trying to build. Is it a setup where the two rotors have six arms each, with an arm every 60 degrees, to form three separate flux paths? How do you intend to have the flux paths cross over each other at the center shaft point? Or will they all merge together into a single flux path at the center shaft point, with N N N on the top three arms and S S S on the bottom three arms?

If one of the four coils will be a driving coil, I can envision two issues: When the driving coil fires the arm/magnet in the firing possition just past TDC will experience a lot of "up" force alond with the twisting torque that you want. Unless the arms are super strong they are going wobble up and down and put stress on the bearings. If you drove the setup with two of the four coils then that would cancel itself out. The second issue is that I doubt this will be as efficient as an external electric motor, so you might have to pump a lot of juice into the drive coil to keep it turning.

Good luck!

__________________
 

Hi Mark. Welcome to the group.

The Motors and Ideas page you posted has one diagram partially missing - "The Adams-Type Test Motor". If anyone wants to see the complete diagram, there is a mirror of the page here:
Bedini IDEAS AND MOTORS

For what it's worth, I recall that John Bedini stated he had removed the Adam's motors from his page(s) because they didn't perform to his satisfaction. Apparently it was too easy to build them incorrectly (as in COP<1) and that ran counter to his aim.

__________________
 

Thanks for the welcome guys

When I started working on the design I really had no idea how similar it was to the Kromrey converter. I have built a quite a few different SSG's and a couple of window motors and wanted to try and replicate the Watson/Bedini machine. I decided to use 2 rotors and place the power coil in between the 2 rotors to take advantage of both ends of the coil for extra speed and torque. I planned on using the other 3 coils as generator coils and space them out over the other magnets so as one magnet is leaving a coil another magnet is entering another coil to try and reduce the coging effect. I also want to use a commutator to discharge a cap bank back into the primary battery when the power coil is off and the generator coils are disconnected from the cap bank. I'll be able to put the generator coils in between both rotors or on the outside of just one rotor. Lots of possibilities and options. My rotors will be made out of plastic with a 1/2 aluminum shaft.

My last window motor used .250amp at 12 volts and the rotor speed was just over 5,000 rpm. I hope this new design has similar speed but will most likely be much slower. Only time will tell. Good luck to all and thanks for the interest. Hopefully one of us can have a break through.

Mark

__________________
 

Mark,

I agree with MileHigh here especially on the wobble and bearing torque. Did you ever build a ssg on a harddrive platter? i built one with the magnets laying down flat and the coil pulsed them from above stressing the platter like you are talking about. the wobble tore up the hard drive bearings. took another same model harddrive and mounted the magnets standing up and pulsed them from the side and those units are still going 3 years later no bearing wear damage.

I invisioned an ssg motor to turn the kromrey too, very efficient but low torque unless you put many pulse coils arround it. i would start with a speed controlled dc motor off the shelf then once your kromrey is going build the dc motor of your choice. Just my 2 cents

goodluck Mark,
Pneuphysics

__________________
 

@pneuphysics

Hello. I was looking in the PDF file you posted reagarding coil winding arrangment. I am very curius...

Are you sure this is the arragement you have on your machine? In my view, coil's voltages are adding. (total voltage = coil x 2). In this way, both coils are shorted and the FWBR is applied parallel to that short.

Thus, you cannot put any load after FWBR and power it because current can flow through coils without having to pass from bridge.

Explain pls this profound mistake.

Regards,
Baroutolgos

ps: SSG powering the Kromreay huh? I did it in an axial mode and it was a very costly failure. SSG is meant to drive nothing but itself really

__________________
 

I apologize to Tim and Don,

As Don actually invited me, and I was stupid enough to mix this up.

This much about good first impression


regarding Kromrey:

I just broke through the thread and see we have awful lot of problems here:


A. Not common terminology for observed phenomena (negative/positive whatever) we agree upon, it takes quite few post to straighten out even basic stuff


B. Not common tools to evaluate building parts (wind this way, no that way, not that other way, who's wrong, whats right?)


C. No common, agreed upon troubleshooting technique for evaluating a finished build (is all soldered, dimensions, power levels etc...)


Laugh if You will, bu we would most probably stumble trying to build a common brushed DC motor this way IMHO.


So i propose:
We agree upon some basic benchmarks as i find even basic stuff is problems lately:

1. A marked north pole magnet: hang a 2 magnet sandwich off a thin line off the ceiling and note the pole showing geographic north as the NORTH pole. (In doubt: do not discuss it here, just check Wikipedia for it)

2. Make a 200 turn "so/so" gauge coil and find a way to pulse it 50...60Hz DC, make it so it pulses North (repulses the marked North of that marked magnet) and mark the proper end of it. Make it run cool for a long time (low Amp draw)?

3. Now we can calibrate our rotor: mark supposed "A" poles and "B" poles on the rotor (a pair each of "A"s and "B"s) so we know which is which.
A--|--B

B--|--A


4. Align the one "A" to our north pulser, we should have a readout off the coil closest to the pulser, and also on the "B" coil just "over the street" to say so ;-). The two signals should ADD UP if the winding is correct.

5. Do so for the other coil pair (lower transverse axis par and upper t. axis pair).

6. We know now that our co-axial coil pairs are correctly wound and connected in series. Note the "+" sign for "A" sides magnet-pulsed off our test coil. Make "-" sign too on the oil pairs. Now connect one pair's "+" to the others "-".
+A--|--B-
| =
-B--|--A+


7. This is the correct rotor for the Kromrey (IMO, I stand here corrected upon a successful builder ;-) ).


To test magnet arrangements:

I. Make a rotor with only one single coil going to the slip rings/brushes.

II. test magnet polarities with the marked magnet, make sure horseshoes are properly aligned (N,N,S,S on one side). I recommend 4 pole build (i see holes of 6 pole build on DVD10 ;-) )

III. assemble the unit with the single coil and run it. Try to get o-scope shots: note them.

IV. repeat the run for the opposing horeseshoe end. Note the waveform (it shall be the same)

V. placing the tested 4 coil rotor in the machine should provide EXACTLY same waveform only bigger amplitude, be it under load or free run.

Now we stand in front of a build that can be compared with another.

NOTE:
This is merely expression of my personal opinion. YMMV

NOTE2:
flame > /dev/null


NOTE3:
thank You all for the good effort and intentions

best regards,
Stevan C.

P.S.
For anyone unintentionally insulted, i apologize in advance.

__________________
 

Yep it was parallel until I changed them to serial. I will post that new drawing later but yes it works but I did not get as much voltage out of it. This is not a high current device like conventional generators - that is why Bedini can use a very thin wire to transfer this energy. I believe it is the reversal or short as you call it that is key to it's operation - conventional generator/coil laws do not always apply. Not sure but my measurements so far are encouraging to me. I am seeing a 22.5% reduction in current draw on my driving dc motor and a noticable speed increase when the gfield output is shorted. I will be cleaning up the wiring over the 4th. and building a hall effect sensor rpm gague to measure the speed details. I will post those readings when complete.

On the ssg driving motor I agree it is hard to get torque out of it. What was the specs of the one you built for driving the load?

Take care,
Pneuphysics

__________________
 

6. We know now that our co-axial coil pairs are correctly wound and connected in series. Note the "+" sign for "A" sides magnet-pulsed off our test coil. Make "-" sign too on the oil pairs. Now connect one pair's "+" to the others "-".
+A--|--B-
| =
-B--|--A+


7. This is the correct rotor for the Kromrey (IMO, I stand here corrected upon a successful builder ;-) ).

Welcome StevanC,

In your opinion what should the waveform look like using this config?

Thanks for your input,
Pneuphysics

__________________
 

Sorry

Meaning open windings before bridge rectifier.

Thanks

__________________
 

I have not built the machine yet, but i intend to.

I would expect a alternating M shaped waveform:

As the coils break loose, a spike is induced,

coil travels to near next magnet, inducing another one.

As the coil aligns with horseshoe iron, sweep to zero (TDC).

As the coils pass TDC, we sweep trough zero and on break free we have the next spike below.,.

This is what Bedini refers to as "magneto" and i a "dinamo machine"

non sine wave.

__________________
 

that's the form


I prefer ASCII art to graphic somehow...

The "TDC" (coil to horseshoe aligned) is on ZERO of the big sweep

The inner "\/" between two spikes is midway of two horseshoes, is seems a little round compared to the sharp spikes.

It takes not much imagination to find the waveform looks like a sine wave with inward mirrored tops...

but it's a original dynamo waveform probably had in Ford-T back then...

__________________
 

Good explaination - I agree, I think you are on the right track.

Thank you,
Pneuphysics

__________________
 

Although flattered it helps little

Won't do anythig short of having a confirmed Vanilla 4pole Kromrey to fiddle with
: cheers :

__________________
 

Well, this thing is still winning ... but .. we'll keep going

I'll start with baseline testing my coils per Steve's note.... No shorts, winds seem correct.. resistance and inductance low .... but we'll see

Starting to wonder if cast iron is permeable enough ? or too slow ?
Pneuphysics, When you went to a serial arrangement, did you flip a coil or cross to the opposite end of the other coil ?

I need a scope Any recommendations on brand or model ?
Ebay here I come...

Timm


Materials of Construction update:
Top/Base: 12” square aluminum plates
Shaft: 3/8” Brass
Magnets: (12) 0.50”x 1.0”x 2.0” Ceramic #5 per stack
Poles: 1”x1”x2.5” cast iron blocks, faces to match the arc radius of the armature.
Armatures: 1” cast iron rod, 4.5” long, drilled 3/8” hole to shaft
1/8” of material was left on each end as a stop for the coil windings and faced to the 2.25” radius. Inside of the 1/8” endcaps, the rod was turned to ½” diameter over a length of 1.75” to accommodate the coil windings. The ½” center was wrapped with electrical tape and nylon washers were added to insulate the winding ends from the iron. The windings were held in place with shrinkwrap after completion.
Frame Rods: ¾” Aluminum, aluminum spacers between top of poles and aluminum top/bottom plate.
Coil: 130 turns of #18, trifilar, twisted
Motor: 3000 rpm, 24V, 1/3HP DC, 3000 rpm
Brushes Braided copper held against slip rings with insulated spring

1500 rpm (12V) 5.0 v DC
8.2 v AC
Unloaded draw 3.02 A
Shorted draw 3.08 A
50 ohm 3.06 A

3000 rpm (24V) 3.95 DC
15.98 AC
Unloaded draw 3.95 A
Shorted draw 4.50 A
50 ohm 4.05 A

Slip ring – Slip ring resistance = 0.2 ohms
Slip ring – Slip ring inductance = 208 µH

Known of the desired characteristics listed above were noted.

__________________
 

StevanC: You said,

> As the coils break loose, a spike is induced

When most of us hear "spike" I think that we think of a Bedini motor collapsing-field discharge spike.

In the Kromery converter case, there are no Bedini-motor-style spikes. Yes, the waveform can look something like a spike, especially if the oscilloscope time-base is slow, but it's just a sharp rise or fall in the voltage waveform.

__________________
 

MileHigh,

I believe it to be a "collapsing-field discharge spike".
The flux path charges the coil, then you break the circuit. As explained by John, that is the main principle of this device.

Timm

__________________