Another thing to think about is these motors with a magneto and points have a waste spark at the top of the exhaust stroke. Is the inverter able to charge the cap up quick enough everytime for both sparks?? You electronics gurus will have to figure that one out. A motor running at 3000 rpm with a waste spark will pulse the HV 3000 times a minute so that's 50 times a second, can the inverter keep up??

Quote from: vlpe on July 04, 2008, 09:42:53 AM
anybody can answer: why use inverter, if the current is being rectified just after the inverter??  Thanks a lot

Hi vlpe,

My tests have shown that you need at least 90-100 volts minimum to cause a plasma discharge across the ignition spark in a spark plug set for a standard gap. An inverter raises 12 volts to 110 or 240 volts for this purpose. Many other methods and DC power supplies can be used for this purpose. But considering the relatively cheap price of inverters these days, it is quite convienient to use one. As long as you know what your doing and don't blow it up...

Regards,

Ossie

Quote from: callanan on July 04, 2008, 09:47:10 AM
Hi bumfuzzled,

I beg to differ about the cause of the sound. I have ran many a petrol engine without a muffler in my time and I am sure most will agree with me that it is not something you put up with for long. A petrol engine without a muffler is a terribly loud sort of cracking sound.

But I do want to point out another thing we have noticed on these supposed water engines and that is that there does appear to be something like water vapour coming out of the exhaust and not smoke as that you would expect from a petrol enine. This exhausted water vapour soon just dissapears and pretty quickly becomes invisible or falls downwards.

Regards,

Ossie

Yes they are etremely loud without a muffler but yer listening to a video so yer not getting the full dynamics of the sound. My neighbor was mowing his yard the other day without a muffler on it and it sounded just like these motors, he was a good 100 yards away so the loudness of the motor was not there for me to hear. I could hear that distinctive pop. I've ran mowers, motorcycles and other small engines without muflers and yes they are extremely loud but they all also have that same distinct pop. With water it may not have the loudness with it but there is only one way to find out so off I go to experiment.

Quote from: bumfuzzled on July 04, 2008, 09:48:37 AM
Another thing to think about is these motors with a magneto and points have a waste spark at the top of the exhaust stroke. Is the inverter able to charge the cap up quick enough everytime for both sparks?? You electronics gurus will have to figure that one out. A motor running at 3000 rpm with a waste spark will pulse the HV 3000 times a minute so that's 50 times a second, can the inverter keep up??

Hi bumfuzzled,

Please see the last circuit and results I posted as follows:

http://www.overunity.com/index.php/topic,5024.msg109796.html#msg109796

I have run this circuit up to 100Hz with no problems. At 70Hz it only uses 5 amps at 12V on the inverter's input. The inverter was delivering only 60 watts where it is designed to deliver up to 300 watts continuously. I know you have been blowing up inverters and are trying to do this but please try and read and understand all of the previous posts regarding the circuits. Get someone to help you if you need to. This may help you to have more success.

Regards,

Ossie

Quote from: Koen1 on July 04, 2008, 08:48:34 AM
@xbox hacker: hehe, I see someone else is anxious to get this to work
in an engine setup So, let me see if I got you: you used a mower engine,
pulled out the spark plug, hooked it to the circuit and adjusted some things
so it worked and produced the plasma ignition effect just like Ossie and
Lucs curcuit does...  But it only works if the plug is not "grounded" to the body
of the mower? Hmm...

Yes, that is correct, but obviously it wouldnt work if the plug was in the motor...LOL

I think the best part was the ammeter did move when fireing. But now i killed the starting gear, so i got to try to find a new one.