Hi@all
When someone builds a Tesla coil, just winding a λ/4 secondary is not enough for making it vibrate at λ wavelength. It also needs a top load for this to happen. So, just making a 37.5 meters grenade doesn't mean it will vibrate at 2Mhz. Some short of tuning is needed. By winding inductor over grenade we can affect the capacitive coupling and so the self resonant frequency of grenade. At certain turns we might bring it down to 2Mhz. If we overdo it then srf goes lower. Nice team work guys well done.       

Hi@all
When someone builds a Tesla coil, just winding a λ/4 secondary is not enough for making it vibrate at λ wavelength. It also needs a top load for this to happen. So, just making a 37.5 meters grenade doesn't mean it will vibrate at 2Mhz. Some short of tuning is needed. By winding inductor over grenade we can affect the capacitive coupling and so the self resonant frequency of grenade. At certain turns we might bring it down to 2Mhz. If we overdo it then srf goes lower. Nice team work guys well done.     

So back to the start at this item discussion

Has anyone ever tried to do it in this way...(the red lines?)
Or have we all been using 37.5m

Has anyone ever seen a syanding wave in his grenade coil matching wavelength.... no i don't think so....because we all see the frequenty  drops as Jeg mentioned in his last post.

So lets try it and see what happens.

This man Rules!!  see Ruslan's comment below    https://www.youtube.com/watch?v=pNFXlo5jv4g

This man just dodges all direct questions what may reveal the modus operandi.. Poked him anyway

Hi Tomtech-   That's exactly the effect we see on our scopes.  Also as he said- tune it a lile litle bit bit up or down and the effect is gone.  My frequency alternates between 25.00 & 25.01 Khz  but the "beat" or "standing wave" is in Hz frequency for 25Khz feed. Feed it 8x up and the frequency will be in Schuman's range. Not sure if is it good for anything in this design.

regards,
Jan

  apecore:


   If you look at the Akula schematic of his second self runner, he shows that the induction circuit resonant point(s) are 17KHz, 27KHz, and 37KHz, not MHz. While connected to the circuit, not it's free running frequency. Which also means that the Kacher should not be running at that same frequency. But, in the Mhz range instead.
Although I have not really seen the 1/4, 1/3, nor 1/2 wave rations, as the best frequency match, there may be something to that, as well.
  If you use a spectrum analyzer, you can see just where the best resonant peeks are found. Although they can and do change, and are not fixed points, at all. As changing the running frequency does induce different resonant points.

I hear what you are repeating here but the frequencies your referring to are different winds, I need to reiterate here they are the overtone multiplier frequencies, if you want to tune into Radio Moscow or Radio Luxembourg  you need to be on the frequency they are tuned to with the appropriate tuned coils and unless you have proper phase correction you get distortion, but we are turning to the 1/4 wave here because that's where the usable content is.

AG

  There is always some weak interference from the grid. I've seen those type of waves at times also, but don't know if they are anything useful.

   AG, if you think that there is something going on at 2mHz, try it and see. I would need to shorten me kacher to do so.
But, my current frequency is at about 1/2 of that or about 1/8 wave, 1mHz

  There is always some weak interference from the grid. I've seen those type of waves at times also, but don't know if they are anything useful.

   AG, if you think that there is something going on at 2mHz, try it and see. I would need to shorten me kacher to do so.
But, my current frequency is at about 1/2 of that or about 1/8 wave, 1mHz

Nick Have you tried trying to tune into your tesla coil with a SW radio ?
i'm working on it at the moment I will let you know how i get on.

AG

   Yes, I've been following that thread as well, waiting to see what else they come up with. And that's pretty much it.
So far, no self running, and just lighting a bulb a couple of feet away on one wire is not that interesting.
   
  However, when I connect up a PS (such as a laptop power adapter) to the wima capacitor, I get 19v DC.  And,  so I thinking of the possibilities.... This is going on with only "one wire" and a ground connection into the laptop adapter. ONLY a one wire connection!
  Geo, try it and see, apecore, Tomtech, and anyone that has the chance.
   
   What I do find interesting, (and I'm just working on this now), is that when I have my load of 3 100w 120v bulbs going on my rig, and I place a bulb across the big 0.47uf WIMA capacitor, it lights up brighter than the three that are on at the grenade's output coil. This with hardly any noticeable dimming of the other three 100w bulbs. So, I'm up to lighting 4 100w bulbs, and getting some useable light out of them. That's all the bulb sockets that I have on hand, until I can buy some more to see how it goes.
   
  So now, the idea that I'm working on, is to take the juice off of the wima cap, and put that through an el cheapo PS, and back to the input. Why? Because there is little effect to the other 300w load, and it is working, so far. 
 So, help me out on this Hoppy, so that I don't fry my PS, for now I'm using a laptop adapter 19v, 4.5A.  I get about 18v out of it.
   I think that what is happening might be of some importance. A "ONE wire" and an earth ground connection to the PS, then looping back to the input.