Second Generation Silver Plated High Current Beryllium Copper Springs and 95+CRI SST20!

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HONDARIDER
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Think I figured out my initial issue. The table I work on is aluminum. The button was just laying on the bare table. I think I was having some heat sink issues the first time I tried it. Clamped the button with an alligator clamp and it worked perfect. That’s my guess since it was pretty easy this time. Might keep a small wooden plank around for stuff like this.

DavidEF
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I’m glad it worked out for you. Crown Thumbs Up

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

MyRants
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I would be interested in some of the generation 3 springs.  If the pricing is similar to the generation 2 items I'd take 10 large and 10 small.

"This too shall pass." -- Ancient Persian saying

BlueSwordM
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Excellent. The prices should be slightly lower if I use a nickle-copper(50um)-nickel plating.

I’m thinking about using a nickel-copper(55um)-silver plating, which would be a bit more expensive though.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
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So guys, I have some bad news, but they aren’t my fault for once.

I didn’t tell you guys and gals, but along with the springs+LEDs, I sold a light to a member on BLF living in Canada.

I shipped it on Wednesday April 3rd, the same date as the springs.

However, there was an error on the part of the employee in which she mixed the return address with the shipping address…

Everything was resolved after 2 days, so nothing bad here…

As you can guess, everything went fine… or so I thought.

UNTIL I RECEIVED EVERY DAMN PACKAGE I LAST SHIPPED BACK YESTERDAY. Angry

I wasn’t too happy about this, as this included a message from Canada Post being sorry about what happened, and that I can just ship the packages back when I come to the post office.

The problem being that because of Easter, I can’t really ship the packages until next week.

So, I’m really sorry guys. I wasted a bunch of your time waiting for the springs+LEDs, and my time as well. Will probably file a complaint for Canada Post.

Sorry if I’m pissed, but I had to vent it off.

WHY DOES THIS HAVE TO HAPPEN TO ME OF ALL PEOPLE?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

contactcr
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Ask for compensation or faster delivery?

Side note: I bought a new 20mm boost driver from MTN and it came with a small becu spring soldered on

BlueSwordM
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I’ve called them yesterday, and they’ll be giving me a refund along with shipping the packages back.

Also, nice! Didn’t think Richard would put the springs on the driver.

Also, since when have they been shipping 20mm boost drivers?!

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
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On a more positive note, I’ll be able to reship the springs+LEDs this Tuesday after Easter.

Also, here are the revised specs for the springs. They use the same usual BeCu C17530 wire.

Large spring:

Spring upper diameter: 6,00mm
Spring base diameter: 9mm
Spring thickness: 1,0mm
Spring height: 13,00mm
Total number of coils: 5
Plating: Copper(60um)+Silver

Small spring:

Spring upper diameter: 4,25mm
Spring base diameter: 5,5mm
Spring thickness: 0,8mm
Spring height: 10,50mm
Total number of coils: 5
Plating: Copper(50um)+ Silver electroplating

Also, would you guys like a lower performing budget spring?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

djozz
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Quote:
Also, would you guys like a lower performing budget spring?

I would certainly like a budget copper-alloy spring, but the lower performance must only be in the resistance being a bit higher (no problem for my purposes) and perhaps a less nice coating. I would not like to give in on the mechanical properties, I would even like to get that improved and close to steel springs.
BlueSwordM
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Of course. Losing conductivity and losing yield strength wouldn’t be very useful IMO.

Luckily, that’s why we have phosphor bronze C54400 and BeCu C17200.

C54400 has a conductivity of 19% IACS, while BeCu C17200 has a conductivity of 22% IACS.

However, C54400 has slightly higher yield strength than BeCu C17530, and BeCu C17200?

Extremely close yield strength to steel, along with slightly better elasticity compared to say BeCu C17530.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

BlueSwordM
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So, here would be the specs of the budget spring:

Large BP Spring:
Material choices: BeCu C17200/Phosphor bronze C54400
Spring upper diameter: 6,00mm
Spring base diameter: 9mm
Spring thickness: 1,0mm
Spring height: 13,00mm
Total number of coils: 5
Plating: Copper(50um)+Nickel

The main advantage of using phosphor bronze would be much lower cost, with 1/2 the conductivity of BeCu C17530 and slightly better mechanical properties.

The main advantage of using BeCu C17200 would better mechanical properties by a nice margin, at a slightly lower price than BeCu C17530.

@djozz, why would you want a lower performing(electrically) spring?
Do you plan on using those as a support for a bypass if it ever fails?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

4492011
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Put me on the list for 20 small and 20 large springs

djozz
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Quote:
@djozz, why would you want a lower performing(electrically) spring?
Do you plan on using those as a support for a bypass if it ever fails?

Just because I know that when going budget, the electrical performance would go down anyway, it was a way of saying that it is not a big problem to me. Reason is that many of my current favourite leds are so low voltage that maximum spring conductivity is not important anymore, 3 times better than steel is way sufficient.
BlueSwordM
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Oh ok, no problem there.

Also, any copper alloy spring is better than steel springs just because they are so much easier to solder.

I’ll try going for phosphor bronze then for the next springs if possible.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Tally-ho
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Yes phosphor bronze, please.
I don’t want beryllium in my flashlights, they are pretty serious with it at my work :

I don’t want to have to put a sticker on my flashlights. Big Smile

BlueSwordM
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@Tally-Ho, that’s the nice thing about Berrylium Copper.

In its alloy form, it’s about as harmful as copper powder. Smile

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

WTF
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Would it be possible to do a batch of medium sized springs?

iamlucky13
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BlueSword, I apologize if you’re already aware of the latest in the FW3A emitter choice saga, but just in case your experience looking for good bins of SST-20’s can be helpful to that team, you might check out Toykeeper’s latest update in that thread:

http://budgetlightforum.com/comment/1491587#comment-1491587

Short summary to save people a click:

ToyKeeper wrote:
It sounds like Neal is still looking for a good SST-20 tint bin. FA or FD tint, in J4 brightness. Not FB or FC, and not J5, because those are reported to be green.

LH351D is still possible but it sounds like international relations may interfere with that.

Tally-ho
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BlueSwordM wrote:
In its alloy form, it’s about as harmful as copper powder. Smile

Yeah, the last time they broke a piece of special glass with Be, a team came to decontaminate the room.
Imagine I lend or sell my Q8 with BeCu copper springs, the guy remove the battery, put it back but with one battery reversed = short and then one spring goes “poof”…magic powder. No thanks.
I don’t want to have to keep track of which of my flashlights have BeCu springs. I’m fine with springs bypass or springs with a tad higher resistance. I don’t seek maximum lumens anyway.
BlueSwordM
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Yeah I get it.

The risk is negligible, especially since the springs have much higher conductivity, but a 0,0001% risk still does exist.

Still, in a dual spring array, I’m always worried what would happen to the cell inside of a light that would be shorted. A dual spring setup will not fail easily in a short, especially if compressed.

I’m more worried about a cell catching fire than BeCu finding its way into the air.

The day someone manages to vaporize a BeCu spring, they’ll just tell me.

BTW, copper powder is still very harmful if inhaled or blown up, as copper oxide power is quite reactive.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

id30209
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@BlueSwordM
Since i’m not here often and notifications doesn’t work well on my phone, is it possible to update order sheet with SHIPPED note?

Thx

WTB Titanium 4sevens 2xAA tube

alberto7
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Can anyone explain the risk of beryllium? phosphor bronze its safe even without coating?

Agro
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Beryllium powder is toxic when inhaled. That’s it.
If you don’t have contact with powder – you’re safe.

808Hi
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I’m in for 50x large, 50x small of your budget springs.

alberto7
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What about a phosphor bronze spring similar to fasttech carobronce but gold plated?

BlueSwordM
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No bueno.

Too expensive for the “small” quantities we have

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

alberto7
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BlueSwordM wrote:
No bueno.

Too expensive for the “small” quantities we have

Silver plated instead?

BlueSwordM
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No, sorry.

No precious metal plating.

Only nickel/copper+nickel for higher conductivity.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Unloco
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I received your “letter” last Monday.

They are pieces of jewelry.

Thanks!!

TrueRMS
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What will the price be on the lower performance small springs? I need 30, not sure the price savings vs. just going with the regular HP BeCu ones in the original post?

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