Hello tenacious, inquisitive & sharp builders!

I finished my window motor replication one week ago.
It is running ... with a battery... (and with or without the cap).
What a wonderful achievement! Is is not ? 

Of course, it only needs a 4.5 volt batt to run firmly but slowly.
Of course, with a 12.5 volts batt and the cap it also runs faster even when the batt is only hand-connected "from time to time" (each second or less) to re-charge the cap.  (Do you see what I mean?)

Anyway : it *does not* work "by itsef" as I naively expected. (

I have done a lot of quick-and-fuzzy tests and measurements, for example: short
cuircuited the Crouzey relay output, short-cuircuited the diode.. etc..
I must be more accurate and systematic during my next testing.

BTW : I have already built 3 SSG Bedini's motors and these gizmos can charge a big cap very fast but in that case the scope show huge spikes and I have not seen such things with my window motor.

Best
PS: Thanks to z_p_e  for is comment.

More pictures at http://freenrg.info/Window_Motor/
Best pictures of the full motor to come soon.

(http://freenrg.info/Window_Motor/WMot1.jpg)

At this point my confidence is waning.  I think that it is likely that the Mike motor was a fake.

If everything that Mike has allegedly said is true, his teacher has the working motor.  If the motor really worked as the video showed, we have not seen the last of it.  It will just take time for it to come out.

I might eventually construct a window motor or a ssg motor with the parts I have purchased, and I might not.  There are enough people trying and failing.  I probably can't add anything to the effort by duplicating something that is proving to not work by many other people.  I'm not very interested in charging batteries, and that seems to be the only way for the window motor to do anything curious.

Welcome back to the TPU Darren

You really did a fantastic job here ...absolutely awesome now about those spikes

I think that the "anomaly" is the same in both units...the tpu just makes lots of them

Lindsay

With good rotor balancing, flywheel effect, and bearing tweaking, it should be possible to approach 95% efficiency or so. I think perhaps one other area of investigation to improve the overall efficiency, would be to use much heavier gauge wire for the windings.

Production electric motors do this every day.  Most high efficiency production motors are at least 93% efficient.  Larger horsepowers are even higher.  There is nothing unusual about 95% efficiency in production electric motors.

I have several small motors at home and at my office that have run for 3 or 4 years on a single AA battery.  They have 3 concentric output shafts running at different speeds - one running at 1 rev/min, one at 1 rev/hour, 1 at 2 rev/day.  They will probably run for several more years on the same battery.  I call them "clocks".

Point is, there is nothing strange about motors that run on milliamps, or even microamps - when they aren't doing any real work.  A motor that is doing no work (other than spinning on its bearings) should draw zero current, other than the copper losses.

Hi (lot of positive terms) guys!
 
For those who might be interested in my
Non-Running-as-Expected-Mike-Modified-Bedini-Cole-Window-Motor :

This thing is slowly but continuously running while powered with 3 cheap 1.5 volts (non refillable batteries). These batts cost me - a couple of months ago - one Euro for a set of 16. Actually, I have to thrown away most of them. 

It drawns about 25 mili amp. The voltmeter is showing less than 4 volts under load.
It shows about 4.3 volts without load (the batts are almost dead).
BTW : this voltage is also slowly but continuously falling... 
The RPM is about 240 (=/=4 revolutions/sec). The Crouzet Relay LED is blinking at the same rate (of course).

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Else:  and this is an "half backed idea" (sorry for this half-off-topic-post):

I have just made some quick measurements with my tiny, faster (but no so efficient? (as it needs about 150 mili amp)) SSG3 Bedini motor. It runs with a set of 6 reffilable 1.2 volts batts.

I can charge a 22 000 micro Farad cap at 6 volt in about 2 seconds.
At 10 volts in about 5 seconds.
AT 15 volts in about 13 seconds.
Actually : the cap voltage is slightly increasing (about 2 volts) after I disconnect the wire.
BTW : I can charge a 4700 micro F. cap at more than 100 volts. This means that the output voltage of a SSG device is far more important than a window one.

I was just wondering  whether I could not mofify the circuit to have my SSG3 motor running  "almost" only on a cap (after having it filled by a batt and while hand- operating a switch). This would be the first "hand driven 'selfrunning' motor"! 
This could be dubbed the "oxymoron motor"... Could it not be?

Some pics on : http://freenrg.info/Bedini/Replications/

Best

Hello Zero_Point_Energy

Good questions...
I must have the measures somewhere in my documentation (perhaps jotted down on the coil itself). But exactly where? That is another question. Yes, I'm not a scientist!

I will see or measure them again and also try my "Oxymoron Motor" tomorrow.
So : more to come soon.

Best

Some interesting test results.

A circuit model was built using only 2 coils, the Main (L2), and the Trigger (L4). L1 is used for magnet induction.

The FWBR was placed across the Main coil for capacitor charging and bemf recovery.

A more detailed examination of Mike's video was performed using a video editor, and the resulting capacitor charging plot is shown in each chart for comparison.

In Chart01 and Chart02, the induction was adjusted to result in a 6V ending voltage after 50 seconds. This gave a reasonable match with the video charge plot.

The 3 tests were done as if the rotor was driven by an external motor at a constant speed, regardless of load. The idea is to test and compare the charging capability of L2 with induction only (no switching, and no DC source), induction and switching (DC source voltage is equal to cap voltage, but is buffered, hence NO LOAD on the cap), and induction and switching taking the DC source for switching directly off the capacitor, giving the cap a real load as it would see in "normal" operation of this motor.

Chart01 shows the 47000u capacitor voltage with induction only.

Chart02 shows the cap being charged by induction and any bemf that may be occurring. The cap is being buffered here, so it sees no load. The buffered cap voltage is fed to source the transistors. It is quite evident when the transistors in the video begin switching, as can be seen by the cap voltage falling off slightly.

Note that the switching/bemf does not appear to aid in charging the capacitor. In fact, the induction had to be increased by 8% to maintain the 6V end voltage. Reason? Likely because the coil is "partially shorted" for one excursion of the induced voltage, hence reducing the charging effect.

Chart03 shows the same setup as Chart02, except the capacitor is no longer being buffered, and it is sourcing the transistors directly. Note that the capacitor voltage would normally level-off as shown, but the cap voltage in the video continues to increase and appears to recover from its earlier fall-off.

What has NOT been modeled here, is the added rotor kick imparted by the Main coil once it starts switching. This would aid in charging the capacitor and sustaining rotation, but how much is unknown at the moment. Perhaps a next step will be an attempt to model this effect as well.

Darren

ND,

I see, it seems your coil is made with relatively large wire, and few turns. Most SSG motors I believe are wound using lighter wire and many many turns, creating "mega-coils".

I'll check on the video and comments you mentioned.

How are you measuring your current exactly?

Darren