BLF Interest List: EX3 High Current Beryllium Copper Silver Plated springs - Still selling my springs :)

will34 · 2019-06-06T02:05:28.000Z

Should we send PayPal now or wait for the GB to end?

BlueSwordM · 2019-06-06T02:07:55.000Z

@will34, I’ll be sending the rest of the PMs this evening. Just announcing the end of the SST-20 interest acquiring.

We are at:
571 Large BeCu Silver+Copper plated springs
507 small BeCu Silver+Copper plated springs
975 SST-20 FD2 LEDs.

The SST-20 4000k FD2 interest list will be closed in 30 minutes, and as I will only be ordering 1000 LEDs, there are only 25 LEDs left that can be taken!
10 LEDs per person max, so at least one person won’t hog the rest.
Sorry for repeating myself.

moderator007 · 2019-06-06T02:32:35.000Z

I’ll join in if not to late.
10 SST-20 FD2 leds
15 small springs
15 large springs

BlueSwordM · 2019-06-06T02:51:41.000Z

Added to the list.

There are only 15 LEDs left in the interest list.

docs.google.com

Rev 3 BeCu Copper-Silver plated spring+SST-20 4000k FD2 Below BBL

Sheet1 L spring 3,S spring 3,SST-20 4k...

Only 10 LEDs per person for the interest list.

Bob_McBob · 2019-06-06T02:52:26.000Z

Ehhh I’ll take 6.

BlueSwordM · 2019-06-06T04:11:12.000Z

9 SST-20 FD2 LEDs left!

docs.google.com

Rev 3 BeCu Copper-Silver plated spring+SST-20 4000k FD2 Below BBL

Sheet1 L spring 3,S spring 3,SST-20 4k...

Closed for the LEDs now.

You can still enter for the BeCu spring Gen 3 no problem.

We are at:
571 Large BeCu Silver+Copper plated springs
507 small BeCu Silver+Copper plated springs
1000 SST-20 FD2 4000k LEDs

BlueSwordM · 2019-06-06T15:44:36.000Z

The LEDs have been ordered.

You can still all put your interest for the springs in this thread of course, since I haven’t ordered them yet.

Agro · 2019-06-06T17:44:10.000Z

BlueSwordM, did you consider doing something like this?

One spring provides stiffness. It can be even steel.
The other provides conductivity. Has very few coils (maybe even less than 1) of very thick conductor. Could be even plated pure copper

BlueSwordM · 2019-06-06T18:21:51.000Z

Can’t see the pic at all.

raccoon · 2019-06-06T18:44:33.000Z

That's weird.

I see it.

It's hosted on Imgur, which generally works for most people.

BlueSwordM · 2019-06-06T19:53:51.000Z

Back on a network that doesn’t block imgur.

Wouldn’t that defeat the whole purpose of not soldering a wire to a spring?

contactcr · 2019-06-06T20:22:01.000Z

Maybe he means extruded as a single piece, but doesn’t seem like something the machine could do?

Barkuti · 2019-06-06T20:47:52.000Z

External spring bypass. Somehow or other, that is a spring bypass sorry to say.

By the same principle, a solid copper conductor spring could be designed to couple with a proper elastic material spring like steel. Somehow or other again, for this to work practically the coils would need to be soldered or spot welded at the base and the top somehow.

Cheers :-)

Barkuti · 2019-06-06T22:17:50.000Z

BlueSwordM:

…

And with pure copper surrounding the steel spring wire, it would result in a catastrophic plastic deformation from the copper, since the copper would need to compress as far as the steel spring would do.

…

The copper spring could also be on the inside, and so the more resilient steel would protect it from damage.

In my experience doing inner coiled wire spring bypasses, which is more elegant but also more tricky than outer, when properly done they're long-lasting. By the same principle an inner copper spring head connected to an outer steel spring would work fine. Pretty sure.

DavidEF · 2019-06-06T22:32:26.000Z

Is it possible to design a steel spring and a copper spring/coil to be used together as a set in a way that would protect the copper coil from plastic deformation? Also, for me anyway, if it will compete with a large/small pair of BeCu springs, then the steel spring must be coated some way to make it easier to solder. And, with the added complexity, would it be significantly cheaper than a set of BeCu springs?

Sidney_Stratton · 2019-06-07T02:54:17.000Z

Modded Q8 with inner coiled copper (~ .040” / 1 mm) and outer nickel steel spring. Capped with brass terminal lugs. Soldered beneath the caps and puddled at base.
Gave very satisfactory results.
Tedious work and if done again, would counter coil the inner part (not to bind in compression state).

Much easier and cleaner w/ BeCu. Also, my experience with silver, excellent solderability.

Barkuti · 2019-06-07T03:06:57.000Z

Yeah DavidEF came and explained better my prototype idea, but as BlueSwordM says it would probably only work well with a multistrand wire conductive spring.

In my experience with multi-strand coiled copper wire the plastic deformation once set it doesn't gets any worse. I also do not think a spring coiled single conductor copper wire would break, but it would make such a sorry nag of a spring in terms of stiffness that the steel spring would certainly have a hard time pulling it.

So well, better keep devising properly elastic conductive alloys. O:)

Barkuti · 2019-06-07T03:11:36.000Z

Sidney Stratton:

Modded Q8 with inner coiled copper (~ .040" / 1 mm) and outer nickel steel spring. Capped with brass terminal lugs. Soldered beneath the caps and puddled at base.
Gave very satisfactory results.
…

Dude! The idea works!

O:)

Sidney_Stratton · 2019-06-07T03:13:40.000Z

@ Blue;

Just checked my Q8 and the springs are just as stiff and resilient.
The copper is pushed back by the steel spring as they are held together via the brass cap.

As I had said, much work involved. BeCu with silver coating much easier (and excellent solderability).
And I’m just a tinkerer…

Sidney_Stratton · 2019-06-07T03:18:55.000Z

It does not beat nor have the science as your endeavor.

At the time, the only option was an ugly multi strand by-pass.

I had done one such with pure silver stranded wire - what a mess as silver has a creep with the solder (think soldering wick, but much more capillary).