Water Sparkplug

[gmeast]

points

Great work guys, WoW.. Thank You.

Is the points capacitor still in the distributor?

Hi,

In the VexUs circuit yes ... the distributor is unchanged.

Greg

[gmeast]

Cap

I love this forum!
Everything happens NOW!

Greg,

Question 1: Should the cap connected to the FWB always be 470uF 400V?

Question 2: What should I use for R1 and C1 on my 10HP single cylinder ICE?


Thank you,
DonL

Hi,

That Cap just needs to be significantly bigger. and appropriately rated. I chose 10 X when I was using 47uf cap but now I'm using 22uf.

If it were my engine I might try 22uf (500 V) and 900ohms (50 Watt) but you should do the math re: frequency RC time constants, etc. but it's not my engine and I don't know the RPM.

Be very careful, you can get knocked on you keester or killed just like with the other stuff.

Peace,

Greg

[insane4evr]

Hi insane4evr,

Help me put my head around your question. Functionally there is no harm in letting the big Cap 'bleed' a little through the limiter R1 during the discharge cycle because it ends up in the gap and as some heat at R1. The big Cap is acting as a DC power supply and the limiter R1 'forces' the CDI Cap (smaller Cap) to run out of juice and the arc to collapse.

Right now the flow is:

FWB keeps Big Cap charged
Big cap supplies ripple-free DC power to Limiter R1
Limiter R1 allows C1 (CDI Cap) to charge in allotted time.
Plug fires and creates path for C1 to flow through
C1 dumps across plug gap making plasma arc
Limiter R1 bleeds a little directly in the plug gap also
C1 runs out of juice and plasma arc collapses
Start over.

Where in this sequence would the inductor go and what would it do?

I can see that if an inductor could be set to resonate properly then it may (as you say) isolate the Big Cap so that the arc might be able to discharge down to 0 - VDC.

I kind of like the cushion because I think it provides some filtering from spikes that might damage electronics, ECM, etc. At the present there few variables in the circuit. Not enough is known about VexUs yet to be adding too many improvements. Right now I acknowledge it is running on energy differentials and not absolute energy 'packets' like in a pure CDI.

Thanks. Peace,

Greg

Hi Greg,

Everything you said is correct. My idea is not to resonate the circuit but to 'soften' the rate of discharge current on the big cap. With the inductor, the value of R1 if it has to be added can probably be reduced to shorten the rate of C1 re-charge. Of course this is just theory.

I have re-drawn your schematic with the inductor and also just to help me understand it better. I hope you don't mind my posting it.

[jstadwater]

Hey guys, another update,

I installed the marine plugs and they are quite a bit better! Champion makes them, the # is 827 M L76V copper marine plug. Threads are 14 X 1.25, standard Chevy small block, but they make a wide range of different engine styles. I will post a video as soon as I change out the phone cord wire to a 22 guage automotive wire. I started to get some cross-fire during operation, thought it was because I only used one HV diode per plug and that maybe they were breaking down. Finally isolated it to two bad wires inside the group's insulation. I guess the phone wire is just so small it is more prone to being easily damaged. Changed out the two bad wires, left the rest hooked up, everything is fine now, but I'd rather be safe by using better grade of wire. In my setup I install the "slam" wires right to the end of the spark plug, this way I can still use the factory plug wires and get the same effect without worrying about what the resistence is in the plug wires. After I get the new wires set up and shoot a short video, I will hook up a tachometer to the distributor and see what rpm range I have with the current setup. I will have to come up with something variable speed to spin the distributor shaft. Busy, busy testing, later...........................Mike

[gmeast]

schematic

Hi Greg,

Everything you said is correct. My idea is not to resonate the circuit but to 'soften' the rate of discharge current on the big cap. With the inductor, the value of R1 if it has to be added can probably be reduced to shorten the rate of C1 re-charge. Of course this is just theory.

I have re-drawn your schematic with the inductor and also just to help me understand it better. I hope you don't mind my posting it.

Hi insane4evr,

Nice job on the schematic! I saved it. This should make it easier for others to follow my hen scratches. Can you make one with just a resistor and post it too? I'd appreciate it. I'll have to put a choke in the circuit then put it on the scope. Could you print "VexUs" on them too please?

Peace,

Greg

[insane4evr]

Hi insane4evr,

Nice job on the schematic! I saved it. This should make it easier for others to follow my hen scratches. Can you make one with just a resistor and post it too? I'd appreciate it. I'll have to put a choke in the circuit then put it on the scope. Could you print "VexUs" on them too please?

Peace,

Greg

Hi Greg,

No problem. I hope this is what you want. I also added the distributor (found an Orcad symbol I was able to use). If you want anything else changed, I will see what I can do. I know I have not done any test to contribute yet as I don't have all my parts yet.

[jstadwater]

Video using marine spark plugs......

It's me again,

Here is the link to the vid I just shot using the marine plugs with no ground strap. Still only 110V, maybe 300V tomorrow. My camera does not pick up the plasma spark very well, but you still can get the idea.

Video2--VexUs circuit on V-8 HEI Distributor

Thanks again Greg, I really like the VexUs circuit!!

Tomorrow is another day to play.................................Mike

I just tried to click on my other u-tube video and it says "sorry this video is no longer available"!! Looks like I will upload them energetic live on this forum tomorrow.

[ashtweth]

plasma ignition

Hi guys hope is not too out of place, this reminded me of Gregs GEET.
am posting this for Ros-Co. have invited him to join the group.

Ash


Hi Ash

Please ask them, about the idea. The plan is the following: the waste
heat of the engine (exhaust) converted to extra hydrogen, and feed back to the intake. And the hot water dissociates in the cylinder during the explosion.

The plasma ignition makes the engine more tolerate to the ratio of the
mixture. Plasma ignition in water resistant enclosure (inverter not shown):http://www.hvlabs.hu/tmp/plazmagyujt_doboz.jpg

Plasma ignition test:
http://www.hvlabs.hu/tmp/vizauto_tal...%e9p%20005.jpg

Regards
Ros-Co.

[gmeast]

pdf

Hi Greg,

No problem. I hope this is what you want. I also added the distributor (found an Orcad symbol I was able to use). If you want anything else changed, I will see what I can do. I know I have not done any test to contribute yet as I don't have all my parts yet.

Thanks a heap! perfect!

Greg

[lapperl]

Bill's Nexus Circuit w/Inverter

Nexus Circuit Update

I spent some time today cleaning up my Nexus test circuit and implemented the inverter. With all of the reports of fried inverters, I installed fuses going into and coming out of the inverter as a precaution. I started at 1amp and worked my way up to a 7amp fuse in order to run the inverter. I did not alter the circuit in any way from the one I used in the video I posted the other day. The only difference is the inverter, and as you can see in the picture I have attached, it is completely isolated from the vehicle.

The instant I turn on the inverter with the engine running, the warning light comes on and the inverter trips out. This is exactly the same condition that BWB from overunity noticed with his nexus replication.

When I use another battery (the one in the photo) that is isolated from the system, it works great! Again, the same results that BWB (@overunity) was having. >

I also noticed that when I use the vehicles battery and the inverter tips, I can see a spark at the ground clip that I attach to the engine block. This lead me to believe that it was an issue with the AC voltage that is going through the MOT (microwave oven transformer). So I went ahead and removed the Half Wave Rectifier that was on the neutral side of the AC and installed a FWB. I ran the positive DC to the MOT and the negative to the diode string. I got the same end result, the inverter tripped. When I used the isolated battery, it worked fine. I went ahead and reversed the polarity (-dc to MOT and +dc to diodes) it did nothing at all.

@anyone;
I am at a loss and was wondering if anyone had any ideas as to what could be causing this.

I have had great hopes for this circuit, due to its simplicity and the potential for it to be utilized on fuel injected vehicles that utilize a coil for every cylinder. But at this point I am ready to abandon it and move on.



Thanking everyone in advance,
LapperLL

[insane4evr]

Trying to help LapperLL

Hi LapperLL,


When using the isolated battery to power the inverter, can you measure AC voltages between the following:

1. Between isolated battery negative post and inverter output lead A =?
2. Between isolated battery negative post and inverter output lead B =?
3. Between inverter output lead A and inverter output lead B =?
4. Between car battery negative post and inverter output lead A =?
5. Between car battery negative post and inverter output lead B =?
6. Between car battery negative post and isolated battery negative post = ? AC, = ? DC

[poii]

Motly Circuit

LapperLL, et all

Here is the inverterless circuit I described a few pages back only with an automotive coil and the primaries in parallel. C1 charges to ~300v when the points close and discharges when the plug fires. It has the db and uv we all have come to know and love.


On the subject of EMI:
My O'scope went blank every time the plug fired so I did some research today and found that ngk makes 5&10k ohm resistor connector caps for spark plugs.
You could connect the 300v to the plug after the resistor using shielded audio or RG6 tv cable. With the MOT, c1 and the diodes in a metal box, the plug would be the only part unshielded. RG6 solid core might have vibration fatigue problems if not well secured.

Thanks to Everyone

[Ansis Freimanis]

To Poii

Superior Idea! Have You soldered this circuit? And how about Spark parameters- is there difference between Nexus, VexUs and Yours?

[gmeast]

schematic

Hi Greg,

No problem. I hope this is what you want. I also added the distributor (found an Orcad symbol I was able to use). If you want anything else changed, I will see what I can do. I know I have not done any test to contribute yet as I don't have all my parts yet.

Hi insane4evr,

Thanks for your time in cleaning up my circuit diagram. I did a redraw in MS Paint of the first one you sent with the inductor. It made it clearer for me and likely it will for others too. The change is just how C1 goes to ground. Functionally it's identical what you drew. You really grasped the principle of the VexUs circuit and the Resistor-Inductor bears real consideration after looking at my redraw. Here it is.

Looking forward to more exchange. Peace,

Greg

[cowboyrx]

What is the part # for the full wave bridge rectifier?