BLF Interest List: EX3 High Current Beryllium Copper Silver Plated springs and SST-20 FD2 95CRI[CLOSED FOR SST-20s)

514 posts / 0 new
Last post
BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

No problem.

We are at 365 SST-20 FD2s!

Only 135 more needed!

https://docs.google.com/spreadsheets/d/1U45ldp-VtJP2GsH8e8xiqKa8nVI2hTYB...

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

Rexlion
Offline
Last seen: 1 day 4 hours ago
Joined: 05/18/2019 - 16:59
Posts: 288
Location: Okla.

Quite a few people are springing for these!

LOL
staticx57
Offline
Last seen: 7 hours 13 min ago
Joined: 04/11/2016 - 00:43
Posts: 684
Location: New Jersey, United States

5 of each spring type and 10 sst20 please

mattlward
mattlward's picture
Offline
Last seen: 6 hours 18 min ago
Joined: 06/19/2015 - 09:20
Posts: 2818
Location: Illinois, USA

10 SST20’s please! 5 large and 5 small gen 3 springs as well.

Thanks

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
S2+, XM-L2 T6 4C

Marc E
Offline
Last seen: 8 hours 37 min ago
Joined: 05/18/2013 - 08:14
Posts: 305
Location: South West UK

TrueRMS wrote:
Which direction will the springs be wound?

I got 100 of the 2nd gen springs and my complaint about them is that they’re wound in a way that’s causing them to gouge into the ends of the battery as you tighten down the tail of the light.

Stronger springs will only gouge deeper if they’re wound the same direction. If possible can they be wound the other way or atleast have the small end hooked in sharply in for battery protection?

BlueSwordM wrote:
Yeah, that’s why I’m going with the 1st gen spring design as found in the photo.

I’ve had the same problem, so going back to that 1st gen spring top coil design.

I may be having a daft moment but wouldn’t reversing the direction of the wind then cause gouging when removing the tailcap?

Agro
Agro's picture
Online
Last seen: 1 min 34 sec ago
Joined: 05/14/2017 - 11:16
Posts: 5400
Location: Ślōnsk

BlueSwordM wrote:
But alas, I couldn’t increase the wire thickness to 1,15mm, as not only is it not standard, but it would also compromise spring ability, and by being not standard, it would cost even more than the dual thick copper+silver plated spring.

I see.
Some further ideas:
1. You have a strong material on the inside and weak on the outside. Mechanically the opposite would be much better.
If you started with a thin solid copper wire and then plated it with LOTS of beryllium copper, the spring would be much stronger.
Or, better, start with a slightly thicker (but still thin) solid copper wire and plate it with a little less beryllium copper. You would retain mechanical properties while improving mechanical properties slightly.
I know.
This would be crazy expensive.
But….
What if you started with thick C17500 spring and reinforced it with 20+ µm C17530? Would that be even possible? Would 20 µm be enough to make the difference?
2. Have you considered reducing contact resistance with the help of contact plates? Would that make sense?
DavidEF
DavidEF's picture
Offline
Last seen: 1 day 9 hours ago
Joined: 06/05/2014 - 06:00
Posts: 7698
Location: Salisbury, North Carolina, USA

Marc E wrote:
TrueRMS wrote:
Which direction will the springs be wound?

I got 100 of the 2nd gen springs and my complaint about them is that they’re wound in a way that’s causing them to gouge into the ends of the battery as you tighten down the tail of the light.

Stronger springs will only gouge deeper if they’re wound the same direction. If possible can they be wound the other way or atleast have the small end hooked in sharply in for battery protection?

BlueSwordM wrote:
Yeah, that’s why I’m going with the 1st gen spring design as found in the photo.

I’ve had the same problem, so going back to that 1st gen spring top coil design.

I may be having a daft moment but wouldn’t reversing the direction of the wind then cause gouging when removing the tailcap?


Well, maybe. The reversing of the tail-cap might cause a reverse gouge. But then, when you’re loosening the tail-cap, you are also relieving the pressure of the spring against the end of the cell. So, it might not be as bad as when you’re compressing the spring.

All that aside, BlueSwordM will be making the new generation springs without a loose end to damage cells. The end will be bent inward.

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

mattlward
mattlward's picture
Offline
Last seen: 6 hours 18 min ago
Joined: 06/19/2015 - 09:20
Posts: 2818
Location: Illinois, USA

I use a 30 caliber gas check soldered to my springs to prevent damage and to provide maximum contact with the cells in high current lights.

EDC rotation:
FW1A, LH351D 4000k (second favorite)
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Nichia 4000k sw40 r9080 (favorite light!)
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
S2+, XM-L2 T6 4C

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

1. Your idea is nice, but wouldn’t work actually, for multiple reasons.

For the 1st reason being that it’s not necessary.
I’ve done the calculations, and asked the manufacturer, and a 25um layer radius wouldn’t affect the mechanical properties in any way.

Second reason being that plating such large thickness would not only be expensive, impractical, but also BAD, because doing such a thick layer(50um+) would require multiple baths, and start introducing crystalline imperfections at over say 100um+.

And you can’t actually plate Beryllium copper. Due to having different properties of metals in the solution, the metals will plate out selectively, and the properties we want will be completely wasted, and the spring would become toxic if ever sanded, unlike the current copper alloy.

Finally, starting with BeCu C17500 would result in worse mechanical properties than what I want, and plating BeCu C17530, which is impossible, would not help in any noticeable way, and would be a worse option anyway. And using a copper wire as the base would be a very bad idea for obvious reasons.

2. Would be nice, but would cost more and require additional manual labor.
Would help if it was gold plated.

TLDR: Plating copper(20-25um)+silver on a BeCu C17530 38% IACS spring is our current best bet without going for the experimental BeCu C17550 60% IACS that is stupidly and crazily expensive, and in small quantities now

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
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

@Marc E and DavidEF, that’s it.

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

PrinceValorum
Offline
Last seen: 7 months 4 weeks ago
Joined: 01/21/2016 - 16:45
Posts: 128
Location: Ohio

In for 12 of the unicorn emitters.

Inkidu
Offline
Last seen: 1 month 3 weeks ago
Joined: 11/01/2015 - 14:03
Posts: 159
Location: PA

I’m in for:

20 large 3.0 springs
20 small 3.0 springs

Thanks for offering these.

ValuseekeR
Offline
Last seen: 1 day 22 hours ago
Joined: 12/01/2012 - 13:18
Posts: 306
Location: USA

In for 10 of the SST-20’s.

Thx!

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 27 min ago
Joined: 02/19/2014 - 14:46
Posts: 4522
Location: Alhama de Murcia, Spain

Wow! Some n00b came here Innocent and broke the forum page layout because he forgot to limit que maximum width span of his picture.

Related to this, when using the Advanced Post Editor the way I do is to specify 100% for both dimensions (relates to aspect ratio) and then, in the advanced tab, for Style I set max-width: n% where n is the maximum relative span which should be set no larger than 100%.

The max-width thing option would be something nice if set in the forum code, so no more page layout messes.

By the way, what's the budget phosphor bronze IACS rating?

 

Smile 

The Light Innocent I am

Deleting a post and redoing it causes the forum thread answer notifications to become invalid. Thus, if you need to change your just published post, edit it. Thanks.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

19% IACS.

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

NeutralFan
NeutralFan's picture
Offline
Last seen: 18 hours 36 min ago
Joined: 03/20/2014 - 19:22
Posts: 805
Location: Wisconsin, USA

Do you have my 3 SST-20 FD2 LEDs on your list (BLF Interest List for Silver Plated High Current Beryllium Copper Springs upgrade and 95+CRI SST20/LH351D LEDs! )? I don’t see me on your spreadsheet.

I’d rather use my flashlight around the house than turn on the lights.

Barkuti
Barkuti's picture
Offline
Last seen: 1 hour 27 min ago
Joined: 02/19/2014 - 14:46
Posts: 4522
Location: Alhama de Murcia, Spain

BlueSwordM wrote:

Budget phosphor bronze springs: 0,15-0,20$US/pcs

Mmm, what does that means? $0.15 each small phosphor bronze spring and $0.20 each big spring? I just see a “C54400” column in the spreadsheet table so… 

 

Smile 

The Light Innocent I am

Deleting a post and redoing it causes the forum thread answer notifications to become invalid. Thus, if you need to change your just published post, edit it. Thanks.

Marc E
Offline
Last seen: 8 hours 37 min ago
Joined: 05/18/2013 - 08:14
Posts: 305
Location: South West UK

Thanks DavidEF/BlueSwordM.

In which case i’d like to add another 10 large and 10 small v3 springs to my order, taking the total to 20 of each.
And can you add 5 GA3s if that’s an option please?

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

I don’t have the prices yet, since I haven’t yet received an answer from the manufacturer.

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

jasontheguitarist
Offline
Last seen: 1 month 1 week ago
Joined: 02/25/2019 - 11:45
Posts: 191
Location: South Carolina

I’ll do 10 of the SST-20s.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

We are at 481 LEDs!

We’ll probably reach 500 LEDs soon, and I’ll be able to order the LEDs probably Wednesday.

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

antoninuspius
Offline
Last seen: 1 day 9 hours ago
Joined: 11/04/2018 - 19:22
Posts: 21
Location: Roma Antiqua

Please put me down for 10 SST20’s.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

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

sienna
Offline
Last seen: 1 month 3 weeks ago
Joined: 01/19/2011 - 15:45
Posts: 51
Location: Ontario, Canada

I’m in for:
20 larger springs 3
10 FD2s

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

We are at 516pcs!

Now that it’s confirmed that there is enough interest, I’ll start sending payments for the LEDs only, starting in Sunday.

I will order the LEDs on Wednesday, on June 5th.

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

trakcon
trakcon's picture
Offline
Last seen: 4 hours 30 min ago
Joined: 01/23/2019 - 15:50
Posts: 214

Awesome! Thanks for facilitating this.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

Yes, but people can still enter, which is great.

I want as many people as possible to get on here.

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

Nicolicous
Nicolicous's picture
Offline
Last seen: 1 hour 29 min ago
Joined: 04/16/2016 - 08:28
Posts: 1490
Location: Australia

im not on the list Facepalm

im after 10 SST-20 4k FD2

Nico -.-

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 32 min ago
Joined: 11/29/2017 - 12:34
Posts: 5493
Location: Canada

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

aswang
Offline
Last seen: 1 hour 38 min ago
Joined: 07/17/2018 - 07:53
Posts: 269
Location: Philippines

Interested in 20 SST-20s FD2

Pages