Thanks, Dan. Yes we should try to keep initial tests as close to original as possible. Could I ask, if you have a moment do you think this ferrite is similar to the one you have specified EC52:

https://www.mouser.co.uk/ProductDetail/EPCOS-TDK/B66341G0000X127?qs=%2FsLciWRBLmC%2Fyp7MKxtOxQ%3D%3D&countrycode=US&currencycode=USD data sheet in my previous post above.

It is easy to check if scope has correct setting just open scope channel and look at available probe settings.  Some newer models allow you to down new settings mine did not. 

Yes, I think mine, like yours only has 100, 1000 etc. but I will double check.

Here's a concept to throw out there. It may put the cat amongst the pigeons so to speak.

One of the trickier and expensive aspects of the multi-cell design is tank. Sealing electrical connections and indeed machining/printing a large item from nylon/delrin is potentially expensive (certainly Delrin is).

If the cell was designed to be independent of the tank, with water inlet/outlet, that might be a flexible approach. Just thinking outside the box here a little with this, but I see no practical reason why the structure must be submerged as long as there is sufficient in/out flow to satisfy the design. Here is a concept drawing, machined from two pieces with barbed fittings embedded (these could also be female thread to accept nylon fittings).

We can still stay faithful to cell design and spacing but make the cells modular, all fed to a master water tank above. The sizes/dimensions of such would not be critical and much easier in application. Just a thought, take it as you will and don't shoot me please.

Not so difficult to achieve with a lathe. With some work. And they could be submerged if desired.

Picture of test points

DD

Excellent, thank you

I agree cell is expensive.  1 foot 4 inch acrylic tube was over $100 and I spent another $50 for 2 waste end connectors and 2 caps.  In your design you need to take into account cell needs to be pressurized, Ronnie talked about why in the thread I attached.  Setup needs to isolate cells so touching them does not affect operation.  Again, Ronnie explained why.

I am as not as concerned by this with my test setup.

Good points, Earl. I am confident to design it to take considerable pressure, so no worries there. It's not very difficult at all, really. Again, this is longer range considerations but I'm keen to reduce delrin where possible. Modular makes sense for me even if it ends up being submerged in early tests. That alone makes choice of container more flexible. I have done all of the calcs on dialectric properties, even at 40mm there is plenty of dielectric strength, I won't get into that here, though. This is for another time. I'll post some updates when I make some more progress.

Hey All, I haven't forgotten about this work and have been chipping away at bits and pieces as and when I find the time. Life is busy at the moment but have been interested by dissectible leyden jar demonstrations of Julian Sumner Miller and what that means for the work under exploration here. After all, if the dialectric carries the charge the delrin in this work is the dialectric (plus the water, of course). That has impacts towards my previous intention to minimise the use of delrin (or indeed have it separated). Interesting to ponder, non the less. https://youtu.be/lq_9t7S3Wk8?t=504

Posting for reference. Found on researchgate a paper on HHO designs of Lawton etc al.

What info do we have re: altering burn rate. My assumption is that an EGR valve could be used and I understand H has a burn rate 5 times higher than natural gas but are there any directions you could point me towards? I see others injecting water to counteract the negative effects but I don't see that as beneficial. Metering prior would be better imho. Any pointers?

to totally replace all carbon fuel adjust the egr to 50 to 85% depending on the fuel your making if on demand hho with air or just hho or gtnt or nano bubble versions just tunning really
Well documented on this forum but in case you have not seen it yet or noticed here are some of the
slide Hydrogen Hot Rodders are using now globally.

Thanks, Dan

Been a while since I looked at this but have been doing research on and off. I have seen in a few places an imbalance in the resonant choke coils. Looking back at the estate photographs, I see some evidence of this too.

Here I have edited a photograph with my thoughts, it seems to indicate a 10% higher turn ration on one side of the bifilar. This would be circa 4.3 to 4.5 layers of bifilar turns of 18 AWG on the EC52 core. I can not be sure if that will align with the permeability of the original core, but others have shown the increased turns on one side of the choke (Petkov) so I believe this is important. I will order the TDK core to test the measurements.

Delrin is clearly for isolation due to it's dielectric strength.

Researching suitable 3D printing filaments and dielectric strengths, it looks as if PLA is the worst, ABS is better but PA66 performs best for FDM type manufacturing. PA66 achieves a dielectric constant of maximum of 4.65 https://ieeexplore.ieee.org/document/10048036

Delrin is listed as 3.7: https://www.matweb.com/search/datasheet_print.aspx?matguid=1eca48b8be434aab9e222575fe44e802

PA66 might then be a suitable test material for those without lathes and CNC machinery. ABS second best. Not sure how well PA66 would handle water, though.

Quote from Evengravy on January 17th, 2023, 07:09 AM

..
C1: 76.28mH @ 6.27Q (1kHz open)                  C2: 64.26mH @ 5.79Q (1kHz open)
C1: 1218.8mH @ 69.5Q (1kHz on core open)   C2: 1093mH @ 68.9Q (1kHz on core open)

A difference of around 10-15%

Here we also see approx 10%-11% more inductance on C1 v C2 taken from VIC Estate Measurements. Petkov has too shown an imbalance in these inductors for tuning purposes (as shown earlier in this thread).

Here's another choke with similar but equal wind count, 60T, from this thread: https://open-source-energy.org/?topic=3460.25

I assume a reproduction coil based on date.

So I think the 56-62 is indeed related wind count. Although it could be interpreted/read as 56 to 62 instead of 56 and 62.

Irondmax shows a ballanced coil and winding process here (estimated 52 turns total): https://youtu.be/LG0hhJT-5LQ?feature=shared

 interesting thanks for posting , 

No problem. My assessment of the delrin carrier is that it serves two functions: 1. Dialectric isolation and 2: allows a stable gap to be established between the core halves when top and bottom halves of the carrier are bolted together

 ok

Dan, do you still have the prewound coils available, if so, can I order one from you and maybe a ferrite? Maybe I can PM you if that's okay.

Researching suitable 3D printing filament dialectric further, PETg is compatible to delrin, 3.00 to 4.00 whereas delrin is listed at 3.7

I am not clear if it will hold up to moisture/submersion. I will try to find out

can use hot nylon 3d printers  now it is 2025

Yes, could try nylon, my hot end should be capable of the temps, I will see. I have delrin ordered and a cnc plus manual lathe so may do that first, it is much faster. My printer has no enclosure so that might make nylon difficult, I will look online at cost to print at a service.

Delrin is maybe 12 euro in material for a single cell, so not bad. As you suggested, Dan, would like to get two together.