Yes, it looks like my magnifying glass is now redundant, so I no longer need to look for weeds and roots that look like cables. 

I will do the x-wire spotting for you then. Maybe the makers of the video are laughing hard over this
one because in this particular video it looks like the x-wire is in plain view, running from the left side on
top of the table underneath the white sheet of paper or cardboard or whatever it is. Under the white
sheet, the x-wire could connect to a flat pancake coil. As Grummage has pointed out, that type of shaded
pole motor can run using an external AC field to couple to the big coil on the motors.  
http://www.youtube.com/watch?v=yv53HgiWkmM

Maybe ! anyone got a big vice on a pillar drill I can borrow for 30 mins and perhaps it might be possible to do another experiment  to turn it on its head! 

Sure it is ! just like the politicians and our western way of life and what they are up to but we can change it all !
mein Freund.
We see a drop 5 to 15 min and the noise of the switch if you turn up the sound, which is synchronicity between the stalls and the noise of the switch. This video is a fake.

I have two tesla coils tuned to the same frequency. The one is the transmitter, the other is the receiver. When they are in some distance, energy transferring happens without the one affecting the frequency of the other. What is the most appropriate way to connect them galvanically between each other so to have the same energy transfer but without affecting their tuned frequencies? Just a de-coupling capacitor in between them, do you think is enough for this task?

Hi Jeg. If you use an actual coupling capacitor between them, in my experience it will load
the transmitter tesla coil down quite a bit. If you put a top load of an aluminum
sheet or similar on the top of the transmitter tesla coil and one of the same size on the
receiver tesla coil they can couple together via the E-field for quite a distance, depending on the
applied input power. There are some other ways to do it as well, but in my experience it is better to
keep the E-field coupling between the two tesla coils fairly loose to reduce loading on the transmitter tesla
coil.

By the way, in my previous diagram I posted regarding measuring an LC tank resonant
frequency, that particular config I showed in that diagram will not work well if the inductance
of the coil is fairly low. It works OK when using inductors wound on ferrite cores, but not
very well for air core inductors. With air core inductors, just connecting the red lead of a signal generator
to one side of the LC tank, and instead of connecting the probe to the other side of the tank you can
just rest the probe against the inductor without directly connecting it, and monitor the amplitude that way.
I sometimes connect a bit of aluminum foil to the tip of the scope probe to get better pick up from the inductor without
connecting the probe directly to the tank circuit. If you don't connect the SG ground to the tank circuit the loading to the
tank circuit by the SG is not too bad. The other option is to add a series resistor as in Verpies suggested method.

Hi Jeg. If you use an actual coupling capacitor between them, in my experience it will load
the transmitter tesla coil down quite a bit. If you put a top load of an aluminum
sheet or similar on the top of the transmitter tesla coil and one of the same size on the
receiver tesla coil they can couple together via the E-field for quite a distance, depending on the
applied input power. There are some other ways to do it as well, but in my experience it is better to
keep the E-field coupling between the two tesla coils fairly loose to reduce loading on the transmitter tesla
coil.

Hi Void
Thanks for your opinion. Ok, looks normal to load it a bit but is it possible to retain the same frequency? A small capacity in between them, won't it act as the capacity provided by the top aluminum plates?

If you don't connect the SG ground to the tank circuit the loading to the
tank circuit by the SG is not too bad. The other option is to add a series resistor as in Verpies suggested method.

I used Verpies suggestion and it was accurate enough. Then I noticed what you described. By having only the grounds connected together and fg's red cable on the air, capacitively I could pick the oscillations even at distance!

Good day JEG

Here's a quick excerpt from C.S.N. (Tesla 1899)page 108:

take care, peace
lost_bro

Thanks lost bro
It is quite interesting. Won't a Tesla coil alter its frequency when more wire is being connected in series like that? Total wire length changes. Wont the same apply to frequency? Do you think that if the three coils are tuned to harmonics of the same fundamental can vibrate at different freqs? It worth to see it  

Thanks lost bro
It is quite interesting. Won't a Tesla coil alter its frequency when more wire is being connected in series like that? Total wire length changes. Wont the same apply to frequency? Do you think that if the three coils are tuned to harmonics of the same fundamental can vibrate at different freqs? It worth to see it

Hello JEG

I believe the general idea that Tesla was implying is that 'by an excited -extra coil- in loose connection and not reacting inductively'.
This type of union allows *galvanic* connection between secondary and -extra coil- (by means of the small coupling coil) but reduces/eliminates the inductive coupling.
The reduction of inductive coupling allow both coils (secondary & *extra coil*) to individually vibrate at their respective frequencies, even though they are *galvanically* connected.

Co-incidentally this type of *small coupling coil*, (named -inductor- in the drawing below) is precisely what Akula and later Ruslan also used between the Karcher secondary and *extra coil* (aka antenna) on all of their setups, albeit for perhaps more than one function.   See attached drawing from Akula.

Hope that helps.
take care, peace
lost_bro