Hendershot Replications

[NOMDI]

What transformers are you using? Make sure they are identical, I've got 2 transformers from the same maker but they are not identical

I bought a pair on ebay. No name, just "PRODUCTS UNLIMITED ,USA" .
120V to 24 V, 24 VAC markings.

I measured : 0.389 H and 0.020 H for the first one,

0.411 H and 0.021 H for the second one...

I don't know if these values are close enough for the Hendershot device. Maybe I should make a resonance test...

[mlurye]

I bought a pair on ebay. No name, just "PRODUCTS UNLIMITED ,USA" .
120V to 24 V, 24 VAC markings.

I measured : 0.389 H and 0.020 H for the first one,

0.411 H and 0.021 H for the second one...

I don't know if these values are close enough for the Hendershot device. Maybe I should make a resonance test...

You are off, same as mine I bought 2 more from the same maker, so hopefully 2 of 4 will match.

[NOMDI]

What transformers are you using? Make sure they are identical, I've got 2 transformers from the same maker but they are not identical

I guess it could be possible to modify the windings number to get perfect matching, if needed. I'm not sure that at Hendershot time, transformers matching was as good as now...

[mlurye]

I guess it could be possible to modify the windings number to get perfect matching, if needed. I'm not sure that at Hendershot time, transformers matching was as good as now...

You can do it that way too What caps are you planning to use? I've got 80uF electrolytic ones and I will use motor run caps in place of 40uF

[NOMDI]

You can do it that way too What caps are you planning to use? I've got 80uF electrolytic ones and I will use motor run caps in place of 40uF

I also have motor run caps. I bought 40 and 30 microfarads to try different combinations... because they are so many differents schematics...

[Bodkins]

fibreglass

if anyone cares to try fibreglass in the middle on the cylindrical vortex field this make help the breath in and out of the energy(the lungs),it may not but Im not doing this research so i cant try it, you may find the unseen force will like it, fibreglass=organic matter!
we will not now if noone trys it.
just trying to help
B

[morpher44]

variable cap

@all
Don't you think that instead of clamping the handmade capacitors it could be better to add a 500 pF variable air capacitor in parallel, like vintage big and ceramic capacitors used in radio ? Just to avoid unwanted variations and to get a precision adjustment ?

@Nomdi

That idea may work, but it presumes that you create your
cylinder capacitor to be less than 7.8nF by about .25nF ...
i.e. 7.55nF so that you can add 250pf to get to 7.8nF.
You'll have to recalculate the plate dimensions for the
hand wound cap to make the capacitance smaller like that --
or have a distance between plates different or different dielectric.

Also, in playing with AC circuits with Joule Thief, Aromaz circuit
and the 555 timer chopper, etc., I see that when you put
your hand on a capacitor (in this case the tuning cap),
the capacitance from your body changes everything.
So when you hold it, you can tune to that sweet spot,
but when you let go, it goes off tune. You will need
to insulate your variable cap from you.

I'm still suspecting that the coil - capacitor allow for
a sort of beneficial energy transfer .. perhaps not subject
to the back EMF. The cap may create an ionizing field,
and the coils may be able to interface with that field ...
so having the capacitor be in that cylinder shape may
be important.

On thing that occurs to me re: how Hendershot built it,
is that he could adjust the C-Clamp and get it right on 7.8nF -- yes.
But any minor change in temperature would bring it off of that
value. It is more likely that the tuning is used WHILE trying
to run the thing ... and tuning either side may be the way
to make up for any non-symmetric differences such as
slightly different transformers, or caps, etc.

[morpher44]

charcoal & paraffin

if anyone cares to try fibreglass in the middle on the cylindrical vortex field this make help the breath in and out of the energy(the lungs),it may not but Im not doing this research so i cant try it, you may find the unseen force will like it, fibreglass=organic matter!
we will not now if noone trys it.
just trying to help
B

@Bodkins

Hendershot used paraffin between his coil and caps ... to sort of
seal it like done in the old days of radio.
One article about him mentions "carbon rods" ... which is sort
of a mystery. The author could have mistaken the wooden dowels
for carbon rods. OR, carbon rods may have been used in the design for something.
I was imagining that paraffin could be doped with crushed carbon,
prior to it being poured around the coil and capacitor.
Carbon/charcoal is used in super caps because it has a higher
energy density ... so as a dielectric ... it has some very nice
properties.
Using fiberglass for a dielectric is a good idea too. I see D-glass
has a very high dielectric constant.

[NOMDI]

@Bodkins

Hendershot used paraffin between his coil and caps ... to sort of
seal it like done in the old days of radio.
One article about him mentions "carbon rods" ... which is sort
of a mystery. The author could have mistaken the wooden dowels
for carbon rods. OR, carbon rods may have been used in the design for something.
I was imagining that paraffin could be doped with crushed carbon,
prior to it being poured around the coil and capacitor.
Carbon/charcoal is used in super caps because it has a higher
energy density ... so as a dielectric ... it has some very nice
properties.
Using fiberglass for a dielectric is a good idea too. I see D-glass
has a very high dielectric constant.

I also think that the secret of the Hendershot device could be the only thing we cannot see on any picture : the "recipe" of the wax between coils and steel cylinders. I guess we'll have to test many "blends" with different crushed materials, magnetic, dielectric, diamagnetic... So materials like ferrite, carbon, bismuth... A huge field of experiment... But if we want to do serious experiments we cannot forget these unknown data...well, I presume...

[mlurye]

I've got my new transformers, new pare looks better lower inductance and they are closer to each other. NOMDI you should be good with yours without rebuilding, transformers do not affect resonant frequency of the coils.
But I'm afraid I have to rebuild one of my coils, resonant frequencies of coils are different
Even so I observed one interesting thing, instead of load and buzzer I'm using High power LEDs. And when I'll get coils to resonate I do see LEDs flickering even so frequency I'm pushing in is very high.

[IONIC]

I built my first Hendershot machine back in 1985. I was convinced there were only a few devices out there that had merit. I never was able to get it to operate even though I used fairly exact components and spent a long time fiddling with it.

Recently I've had a few insights I'd like to share. Consider that Hendershot filled the space between the coils and cylindrical capacitors with beeswax. This was a clue I had missed. Consider also that the "basketweave coils" were not optimized for RF energy i.e. minimum capacitance between windings. Quite possibly Hendershot had a different idea in mind. Take a look at what real basketweaves of that era looked like. The turns angle is much less.

Consider the interplay of an acoustic resonance between the cylindrical capacitors which may have acted as ultrasonic transducers coupling to the strangely wound coils via the beeswax.

Imagine electrons in the wires (which have mass) being vibrated radially by the transducers, forced into the peaks and valleys of the windings. Ordinarily this will not result in electron flow. Add one more lower frequency component and you can visualize an acoustic pumping of electrons around the loops.

Since most FE devices are constrained by Lenz's law, a different method of propelling electrons in a wire should be sought after. I offer an acoustic resonance model as it is not subject to Lenz's law.

There has been the discovery of anomolous electron flow in conductors due to "phonon drag effect".

Just my WAG as to what may be happening in the Hendershot machine after much meditation on the device. I may dig out the first build and try it some time.

[NOMDI]

I've got my new transformers, new pare looks better lower inductance and they are closer to each other. NOMDI you should be good with yours without rebuilding, transformers do not affect resonant frequency of the coils.
But I'm afraid I have to rebuild one of my coils, resonant frequencies of coils are different
Even so I observed one interesting thing, instead of load and buzzer I'm using High power LEDs. And when I'll get coils to resonate I do see LEDs flickering even so frequency I'm pushing in is very high.

Hi ! Too late... I've just modified my transformers (the only difficult thing to do is not cutting the wires while cutting the adhesive tapes...;-) for perfect inductance matching. How do you test yours , With a neon and a signal generator ? Need some current amplification or not ?

[mlurye]

Hi ! Too late... I've just modified my transformers (the only difficult thing to do is not cutting the wires while cutting the adhesive tapes...;-) for perfect inductance matching. How do you test yours , With a neon and a signal generator ? Need some current amplification or not ?

Neon or 2 LEDs in opposite direction, no need for current amplification.

[mlurye]

IONIC Did you use Lester Hendershot schema? Do you have function generator up to 5MHz ? Can I ask you to do simple test for me with your Hendershot generator?

[IONIC]

Hi

I used the schematic from "The Hendershot Motor Mystery". I would like to perform the tests, however the units are disassembled and in storage at this time. Here is an old pix of the coils and vertical output transformers shown after disassembly. Inner capacitors were discarded. I built the coils on separate bases with connectors so I could play with separation distance. What is the nature of the test?, I have all kinds of generators to several hundred megahertz.