Thinking about Davey device I realized that it may be a tricky way to use a very little power to maintain heat action is such device. That way would not be mechanical or electrical mainly, but rather electromagnetic. It may look very strange or like a crazy idea but the only convertion from electrical to mechanical power (which is required to generate sound I suppose - sonic response of bells) is ELECTROMAGNET! But that is one problem - this device is quiet when not immersed in water. Water must change some electrical parameters of this device but I can't think about anything except resistance :-(

It tok me to the conception of mechanically forces cavitation and open a vast field of new experiments.I connected that discovery with my tests of Bedini monopole and I think I found a very valuable way to generate heat by fast mechanical vibrations.The only problem is to find how water absence stops them.

One of possible embodiment of this invention is to fix a very strong neo magnet in a quite strong SS flat stip mounted ONLY on one end. Placing a coil acting as strong electromagnet before that neo magnet at some distance and applying a fast pulses to coil would generate the same effect in my opinion like a rotating wheel with holes on outer edge if of course we properly place such holes on magnet, SS strip or coil core.

What if the inner bell is loosely mounted on a center rod in such way that it can jump and fall according to electromagnetic action between bells, caused by AC current flowing in conductors ? Wouldn't it produce changing pressure effect in space between bells ?  How we could obtain such effect ? I see it related to my experience with Bedini monopole : sometimes when the energy  is not taken up by pushing magnet the coil is tend to humm or hiss loudly and vibrate.

So my proposition is to check a specialt mounting of live wire on a inner bell which may cause it being like a CORE of elecromagnet !!!

Ha!  Wonderful day! I might found why this deice is quiet when not immersed in water.

The water surely closes the circuit which allows electromagnetic action, which after that causes sonic responce and cavitation.Pump action, direct heating by current ,cavitation - all are porobably involved in final result.

My proposition is to wind a few turns of live wire (not sure if insulated or not) around the inner bell. The only thing that bothers me is  patent which said something about using brass or copper tubing for electrodes, but theory is valuable and require some analysis and tests.

Just to note,please: if you use my ideas with success remember I want to give theml for free to all people.I deny and forbid to patent any of them related to such embodiments and ideas I described on that forum.

Another realisation - using distilled water and electrolyte will allow me to control the current used, so I can measure it with the meter!!! (10A max.)

So some hard-figures:

Started with approx. 350-400mL of distilled water, room temp, with a microscopic amount of of sodium bicarbonate added, and used the 'little' Davey heater.  It took 150 seconds to boil, (rather, I stopped it after that, 'cos it was boiling nicely) starting out drawing just under 3A @ 230V AC, climbing to a max. of 4.2A leading up to boiling, before finally dropping back to a little above 3A when boiling!

Efficiency anyone???

This electromagent theory sounds plausable, maybe thats why some earlier pictures of the inner bell have scouring rings near the end of the bell. On the other hand peter is a simple musician and am not sure of his capabilities of elctromagnetism. Some test would prove this theory or not, i come back to the inventor... simplicity the universe is music!!!!