Old mech tubes never die ;) (in MIXX mix)
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#21 (permalink)      11/8/2021 9:22:09 AM US Central   quote/reply + tips
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Troepfler
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cmj55 wrote:

@Troepfler, are you using magnets in the SMPL switch? I've made SS springs for mine which imo improve conductivity.


The 3 copper SMPLs in test now have all the screws and magnets.
But I have others with circlips, I think they have springs.

With a simple Ohm-Meter I had on all 3 about 0.5 Ohms
between the pressed switch head and the tube.
(battery IN and a dummy atty).
But these simple Ohm-Meters are not very exact.

I still think, the problem are these notches/teeths,
they should switch the current mainly.

And I still think what happens on battery plus with these black dots,
will similar happen on a brass to brass switch,
thats perhaps the reason why they have silver or gold plated switches.

First I will try now with vinegar.
Now with 0.33 Ohms the mods stay cold,
I will coil them to 0.20 Ohms to see which part of the mod gets hot.

#22 (permalink)      11/8/2021 10:23:18 AM US Central   quote/reply + tips
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zarck
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Troepfler wrote:



With a simple Ohm-Meter I had on all 3 about 0.5 Ohms
between the pressed switch head and the tube.
(battery IN and a dummy atty).
But these simple Ohm-Meters are not very exact.

And I still think what happens on battery plus with these black dots



Your ohm meter need to be able to zero out when shorting the test leads and internal resistance in the meter, otherwise they will also be part of the measurement. And 0.5ohm for a so and so meter is quite common.

Copper to copper will weld together if the amp is high enough. Think brass is a bit more resistant, but it will even happen to steel with high enough effect. Think you will need to get pretty dirty for it to have that much of an impact though.


Edited on 11/8/2021 at 10:24 AM. Reason:
#23 (permalink)      11/8/2021 11:44:39 AM US Central   quote/reply + tips
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vape8ion
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I was a dedicated SMPL user throughout their "day" and long after. Best tube of the time in spite of being high maintenance. I gave Bestia a try, but never found one I could trust the side switch to be reliable on. I have maybe 20 or so tube mods of different makers and a few mech boxes. One day my YouTube algo threw up a vid of Adrien Lo DejaVu. He was introducing the MECHA. When he gets to the switch...with frikin umpteen million parts, he loses me. Then I saw an animated vid of how it works and got interested. I thought I would try one, but the price was up there, like $60. I didn't want to lay that much out for a potentially wonky switch, but my curiosity got the better of me and the packaging was stellar. I bought an original just as the clones hit the market. Once I received the mod I immediately bought a second. I have had them for three years in rotation with Ageis Legends. It is the only device I use now and have done so for over a year, the Legends now collect dust. The switch, the one with too many parts? It has lived up to its hype and then some. It is the most reliable and low maintenance tube I have ever had. That and it fires hard at no matter what angle the switch is activated.
I'm out.....have some fun. Eh?
#24 (permalink)      11/8/2021 12:17:40 PM US Central   quote/reply + tips
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Troepfler
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zarck wrote:

Troepfler wrote:


With a simple Ohm-Meter I had on all 3 about 0.5 Ohms
between the pressed switch head and the tube.
(battery IN and a dummy atty).
But these simple Ohm-Meters are not very exact.

And I still think what happens on battery plus with these black dots

Your ohm meter need to be able to zero out when shorting the test leads and internal resistance in the meter, otherwise they will also be part of the measurement. And 0.5ohm for a so and so meter is quite common.

Copper to copper will weld together if the amp is high enough. Think brass is a bit more resistant, but it will even happen to steel with high enough effect. Think you will need to get pretty dirty for it to have that much of an impact though.



Tip to tip with the old and simple Ohm-Meter shows 0.5 Ohms.
Testing with the mods shows 1.0 Ohms.
Result: about 0.5 Ohms.

But are 0.5 Ohms in a switch a lot?
Does 0.5 Ohms in a switch means:
same like battery dropped from 3.8 to 3.5?
Because of SS and others, we lost our smartest specialists,
they could have answered the question easy.

With Volts = Ohms x Amps
you see, my 0.33 Ohms result in about 12 Amps.
Car fuses and single fuses in houses are build to 10/12 Amps.

But about 12 Amps in a mod is a lot.

#25 (permalink)      11/8/2021 1:07:07 PM US Central   quote/reply + tips
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vape8ion wrote:

He was introducing the MECHA. I have had them for three years in rotation with Ageis Legends. It is the only device I use now and have done so for over a year, the Legends now collect dust. It is the most reliable and low maintenance tube I have ever had. That and it fires hard at no matter what angle the switch is activated.


Sorry, I dont find Mecha in FT and the first 30 Google pages.

#26 (permalink)      11/8/2021 1:25:12 PM US Central   quote/reply + tips
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vape8ion
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You may not find it here, Troepfler. They offered the MECHA as a preorder and then carried it and a clone for a month or so, I think. I purchased my first from his distributor and the second one from here. They have purged my order history and I don't find it in their inventory, so they probably purged that also. Adriens YouTube vids are still up, type his name and mecha in the search bar, and it'll come up on YT and Google. Last time I did a search on it for sale, the only thing I found was on AX, and it was a clone. Now it is unavailable anywhere that carried it in the past.
I'm out.....have some fun. Eh?
#27 (permalink)      11/8/2021 1:42:56 PM US Central   quote/reply + tips
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Troepfler
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vape8ion wrote:

You may not find it here, Troepfler. They offered the MECHA as a preorder and then carried it and a clone for a month or so, I think. I purchased my first from his distributor and the second one from here. They have purged my order history and I don't find it in their inventory, so they probably purged that also. Adriens YouTube vids are still up, type his name and mecha in the search bar, and it'll come up on YT and Google. Last time I did a search on it for sale, the only thing I found was on AX, and it was a clone. Now it is unavailable anywhere that carried it in the past.



Well thanks. And what is your second best choice for a 22/24 mechanical mod?

#28 (permalink)      11/8/2021 1:50:58 PM US Central   quote/reply + tips
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zarck
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Troepfler wrote:


But are 0.5 Ohms in a switch a lot?
Does 0.5 Ohms in a switch means:
same like battery dropped from 3.8 to 3.5?
Because of SS and others, we lost our smartest specialists,
they could have answered the question easy.

With Volts = Ohms x Amps
you see, my 0.33 Ohms result in about 12 Amps.
Car fuses and single fuses in houses are build to 10/12 Amps.

But about 12 Amps in a mod is a lot.



0.5ohm seems a bit high, my copper SMPL clone with spring gives 0.0-0.1ohm for the button and 0.0-0.1ohm for the mod from top to bottom. which would read as around 0.05ohm +-0.05ohm. My multimeter is in the lower professional grade.

As for the amps... it's not really the same. Let me explain.

In a Mech with a 0.35ohm resistance full 4.2v cell and 12A will give 50w

12 amp fuse in a car with 14v will tolerate some 168w (although in reality they will be speced for some 30v or so and be able to handle even higher wattage before breaking)

12 amp fuse in 250v (EU) will tolerate some 3000w

So they all relate and even though the numbers seem to be the same, they are not.

#29 (permalink)      11/8/2021 2:27:52 PM US Central   quote/reply + tips
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^^
Thanks for explaining.
My view was, Amps destroy switches and not Watts.
And sorry, I still believe that.

We need an electrical specialist who tells us the whole story.
#30 (permalink)      11/8/2021 3:20:46 PM US Central   quote/reply + tips
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zarck
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Troepfler wrote:

^^
Thanks for explaining.
My view was, Amps destroy switches and not Watts.
And sorry, I still believe that.

We need an electrical specialist who tells us the whole story.



It's just part of the truth. Watts are the power amps is just the flow (current). And voltage is the size of the stream... A high current can cause damage sure, but it's relative to the size of the stream. And that's what watt describe.
Water is usually what is used as metaphor. So you can cut stuff very precise with a small stream with a high flow. But a larger stream with not nearly as much flow can still eradicate buildings.

So I have been designing electric circuits for the last ten years or so as a hobby... I also have a degree in science and technology way back.

#31 (permalink)      11/8/2021 6:51:14 PM US Central   quote/reply + tips
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. And what is your second best choice



My second choice is either the Broadside...which was high maint. Or a Wismec Noisy Cricket because it hit like a freight train, but was unreliable over time.

I'm out.....have some fun. Eh?