Water Sparkplug

[gotoluc]

VexUs running the Bug found at:

YouTube - VexUs Test circuit running the Bug

Peace,

Greg

Absolutely FANTASTIC Greg

Top notch work man.

Thanks for sharing

Luc

[jstadwater]

Thanks Gibs, for that capacitence analogy.

Here's my intention, I will be using a pair of 120uf 450V caps in the doubler circuit. That would give me a total output capacitence of 60uf. I don't plan to go over a 10uf cap for discharge, that should allow me to use say, a 47uf cap to "store and feed" energy to the discharge cap safely. I will probably end up using a 4.7uf discharge cap, since I am now charging with 326V instead of 110V. Less capacitence and more voltage ABSOLUTELY does give a better effect at the plug. I ran out of time yesterday, but will have my variable speed motor set up shortly to see just how fast I can spin this V-8 HEI distributor and still get plasma. I will post a vid when I finish the test.

@Greg
Great work again man!! Loved the simplicity and straight forward BUG video, very cool stuff!!! I have lots of diodes, caps, isolation transformers, variacs, and stuff coming. I'll be installing the VexUs into a 350 Suburban hopefully by the end of the week! Later...............................Mike

[Jetijs]

Greg,
awesome video as usual
Can you test if this vexus circuit works just like your previous one? I mean if this circuit also has the same effect on your choke and timings? Because yesterday I tried this in my car and I still needed to use the choke till the engine warms up, no matter if I used the boosted spark or not. But I did hear the idle RPM's go up just a bit when the plasma was turned ON and also I could hear a clicking sound from the boosted sparks in the engine block, that disappeared when the plasma was turned off, leaving just an ordinary spark
Thanks,
Jetijs.

[xpskid]

VexUs running the Bug found at:

YouTube - VexUs Test circuit running the Bug

Peace,

Greg

Great Job Greg !

Another fine video to share and inspire everyone.

Questions: Are you running only one diode per cylinder on this set-up ?
I've never been able to get a good flash by spraying water. Any advice here ?
I'm using Champion plugs for the ease of removing the resistor, but when I spray water, it simply arcs backwards, following the insulator back into the center of the plug core. I've tried a couple atomizers, and both well and DI water.

Regards,

Timm

[Gibs]

Capacitance value

Thanks Gibs,

I just tried the 1.06 uf oil cap in my circuit, worked fine and didn't even think about heating up firing my circuit at 2,300 rpm. Of course, the spark was way less than with the 22 uf cap at same 110 voltage.

Now for the voltage doubler circuit, the caps and diodes used should be rated MORE than the expected output voltage, correct? What about the capacitence of the caps? Currently we are using a 470uf storage cap at the FWB, would that need to be cut down to less than half of the uf rating of the caps in the doubler circuit so the inrush of voltage to charge the storage cap doesn't fry the doubler circuit? If anyone knows about this, I would be greatly appreciative.Later................................ .....Mike

Hi Mike,

You are right about diodes and capacitors rating, they SHOULD be more than the expected voltage.

About capacitance value, note that total voltage output of doubler circuit is obtained by two charged capacitors in series. Assuming each caps to be 470 uF means that the total capacitance of the circuit is 235 uF. Instead of cutting down capacitance of the caps, you should double it to still get 470 uF at the end. Caps of the same capacitance value connected in series divide their value by the quantity of caps.

Wish you the best.

[gmeast]

spark

Greg you RAWK man, looks so smooth, stable and so simple is this not what every one needs?, Man we gotta get Greg a hydroxy booster up there some how .

Had no luck with the plasma circuit with the booster on the car on the weekend, had to re do the circuit(our mistake), BUT we have the Briggs and smacks here almost ready with one of Ossies spark ones to do for all on the weekend. Greg that was really good to see you illustrate the dynamics of the circuit, and so simple, thanks allot man.

Sincerely
Ash

thanks much Ash

Greg

[ashtweth]

Greg you RAWK man, looks so smooth, stable and so simple is this not what every one needs?, Man we gotta get Greg a hydroxy booster up there some how .

Had no luck with the plasma circuit with the booster on the car on the weekend, had to re do the circuit(our mistake), BUT we have the Briggs and smacks here almost ready with one of Ossies spark ones to do for all on the weekend. Greg that was really good to see you illustrate the dynamics of the circuit, and so simple, thanks allot man.

Sincerely
Ash

[gmeast]

New Video of VexUs running Bug

VexUs running the Bug found at:

YouTube - VexUs Test circuit running the Bug

Peace,

Greg

[gotoluc]

Thank you,

What if I used pulsed DC input?
How much pulsed DC voltage would I need to see output on the secondary of a MOT or won't it work?

DonL

Hi Don,

if you pulse a 1.5 VDC D cell battery or smaller and depending on the pulse frequency you would get about 30 to 60 volts AC on the secondary of a microwave oven transformer. However this voltage will have very low current though, more than 20 times less than the input current.

Luc

[jstadwater]

Hmmm...........that's interesting, I used the two LED induction test on the plug wire and it lit the pos LED. Most important I guess, is that it DOES work, right?

As for > 5,000 rpm...........keep watching, I got a test and sequence for that too. Just haven't gotten to it yet, still waiting on parts. Almost finished setting up my variable speed motor to drive the distributor, how far can we take it? I'll be back shortly.........................................Mi ke

[xpskid]

I just ran a test with the voltage doubler circuit installed. My max rpm on the V-8 distributor, drill spun, is 2,300 rpm as previous. Voltage doubler is set up as follows: A pair of 120uf 330V flash caps and a pair of 1N5408 diodes. The measurable DC voltage out is 326 volts, I think the caps need to be rated for 400V instead, I just had these laying around. The discharge cap is a MW oil filled 1.06uf rated for 1,750V. NO misfires at 2,300 rpm, nice crisp sparks and no cap heating detected. If I could only find one of these oil filled caps at say....10uf. I wonder how good the spark would be with that bad boy! I am in the process of setting up an electric motor (variable speed) so I can see how fast the plasma spark will crank out with my present configuration. Will post results as soon as I finish the test run. VERY EXCITED, later......................................Mike

Hi Mike,

I didn't explore the upper limit of rpm on my circuit. I very rarely go over 5000 rpm (2500 rpm distributor equivalent) when driving, unless alcohol was involved. Do you have an application for > 5000 rpm ?

Timm

[Jetijs]

Hi all.
Today I tried the vexus circuit on my car again. This time I increased the number of 1n5408 diodes in the string to 16 and I used only one string per spark plug. This time there was no problems. The engine started good and the light bulb went bright. So if you use a number of low voltage diodes, make sure you have at least 12 of them in a string. As soon as I turned the variac ON, I could hear a minor increase in the idle RPM's that went back to normal when the variac was turned OFF. But that minor change is barely hearable, nevertheless it is there. Also judging by the light bulb flashes on each spark pulse, I could tell that there are some pulses when the booster effect did not appear also the engine chokes a bit on those moments. I suppose that that is because of the circuit breaker wearout that causes missing original spark. Will install the inverter and isolation transformer now and take the car for a test run

jstadwater, this time I also used the same setup as in previous test, I did not reverse the diodes, so if that circuit works for you, that must mean that you also have a negative HV output from the induction coil.

Anyway, thank you all for suggestions and help

[dllabarre]

Hi dllabarre,
Transformers will give you a continuous output only if your input is AC and not DC. 12 volt battery is DC, so no continuous output. You will get only a short duration spike output at the moment of DC connection and short duration higher spike output at the moment of DC disconnection.

In short, you need to test with AC voltage. Watch out for lethal voltages.

Thank you,

What if I used pulsed DC input?
How much pulsed DC voltage would I need to see output on the secondary of a MOT or won't it work?

DonL

[insane4evr]

This might seem like a trivial question to most here but....

I got my hands a on Microwave oven transformer and capcitor.
I wanted to test to make sure it even works so I connected a 12V battery to the primary.
But I don't get any voltage reading out of the secondary?

Is this a fair test or isn't a 12V battery enough of an input?

How is a good way to test the MOT?

Thanks
DonL

Hi dllabarre,
Transformers will give you a continuous output only if your input is AC and not DC. 12 volt battery is DC, so no continuous output. You will get only a short duration spike output at the moment of DC connection and short duration higher spike output at the moment of DC disconnection.

In short, you need to test with AC voltage. Watch out for lethal voltages.

[jstadwater]

Good VexUs News..................

I just ran a test with the voltage doubler circuit installed. My max rpm on the V-8 distributor, drill spun, is 2,300 rpm as previous. Voltage doubler is set up as follows: A pair of 120uf 330V flash caps and a pair of 1N5408 diodes. The measurable DC voltage out is 326 volts, I think the caps need to be rated for 400V instead, I just had these laying around. The discharge cap is a MW oil filled 1.06uf rated for 1,750V. NO misfires at 2,300 rpm, nice crisp sparks and no cap heating detected. If I could only find one of these oil filled caps at say....10uf. I wonder how good the spark would be with that bad boy! I am in the process of setting up an electric motor (variable speed) so I can see how fast the plasma spark will crank out with my present configuration. Will post results as soon as I finish the test run. VERY EXCITED, later......................................Mike