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

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moderator007
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My mistake. Facepalm
I went through my paypal payments and found the same one you just PM’d. Thumbs Up

bhstinger
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Hi Blue,
Is there still time to count me in for: 12x SST-20 4000k 12× 351D 4000k

electricjelly
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PayPal sent. Thanks for organizing this. I look forward to checking out these springs in person.

BlueSwordM
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@bhstinger, you can still enter for the SST-20 4000k and LH351D 4000k.

Just need to find a good source of them with great tints…

I still haven’t found anything with a confirmed tint bin.

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

MRsDNF
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Thanks Blue. Terrific effort for us all here. Beer

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

Cereal_killer
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I haven’t received a PM yet for pmnt for my 100 springs. Are they going out in waves and I just haven’t came up in the order yet or was I missed?

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

BlueSwordM
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Yeah, I’m doing 2 waves of 15 people per day, one during the morning, and one during the evening.

You are on track for the 2nd wave today.

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

Cereal_killer
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Cool, figured as much (and in the mean time I managed to score a few of your springs from a fellow modder for use now) but I can’t wait to stock up and not have to worry for a little bit!

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

BlueSwordM
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Yeah.

So, I wasn’t able to find a source of good tinted SST-20 4000k, so had to delay it, along with the LH351D Crying

Only the springs, SST-20 3500k and 3000k will be available for this groupbuy

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

Cereal_killer
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Hey guys, if you’re pp mobile app is forcing you to send pmnt in CA$ just switch to PayPal on your browser, choose goods & services and it’ll default to sending USD!

 RIP  SPC Joey Riley, KIA 11/24/14. Now I am become death, the destroyer of worlds.

bhstinger
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BlueSwordM wrote:
Yeah. So, I wasn't able to find a source of good tinted SST-20 4000k, so had to delay it, along with the LH351D Crying Only the springs, SST-20 3500k and 3000k will be available for this groupbuy

 

Thanks for the updates and all the effort you are putting into this!

It will be worth the wait for the right tint bins.

KawiBoy1428
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Thanks Blue, payment sent…. Beer

KB1428 “Live Life WOT

BlueSwordM
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I’ve sent everybody on the list a PM in less than 2 days this time.

Now, we just have to wait until I can make the final order for the springs February 19th, since they take more time to make+ship than 2 day shipping LEDs.

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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PP sent

WTB Titanium 4sevens 2xAA tube

flucero28
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PP sent!

BlueSwordM
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Excellent. Here are the final specifications:

Large spring:
Spring upper diameter: 6,00mm
Spring base diameter: 9mm
Spring thickness: 1,0mm
Spring height: 12,00mm
Total number of coils: 4
Plating: Silver electroplating

Small spring:
Spring upper diameter: 4,00mm
Spring base diameter: 5,5mm
Spring thickness: 0,8mm
Spring height: 10,50mm
Total number of coils: 5
Plating: Silver electroplating

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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The springs have been ordered.

Will post updates as they come.

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

Enderman
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Wow I didn’t know the springs knew how to post on a forum! Big Smile

BlueSwordM
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Yeah you’re right.

The springs have become so advanced that they’ve become sentient Smile

But seriously, with a silver plating and removing a coil from the large spring(which will increase the plastic deformation from 0,9mm to 1,3mm instead), we may be able to get even higher current from the dual spring array.

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

DavidEF
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BlueSwordM wrote:
Yeah you’re right.

The springs have become so advanced that they’ve become sentient Smile

But seriously, with a silver plating and removing a coil from the large spring(which will increase the plastic deformation from 0,9mm to 1,3mm instead), we may be able to get even higher current from the dual spring array.


I’m hoping it makes a noticeable improvement in my BLF Q8 performance. I’ve made no other mods, but I’m using nice cells. I’m thinking about changing emitters to HI for a little bit more throw like the Sofirn Q8 but not sure of that yet.

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

djozz
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I received my “early” 3500K SST20 leds finally. The mail went wrong and they came back to Blue and he re-sent them.

I reflowed one on a 16mm DTP board and frankly, I’m not impressed. I measured tints at 350mA but other currents do not significantly improve things. The CRI is perfectly fine (over 95CRI in all measurements) but the tints are not below the BBL but in most builds will be clearly above it.

Bare led measured straight from above is ok:

Same led measured at 60 degrees to the side:

Same led with small OP reflector on top (from an S9), the hotspot was measured:

So there is nothing rosy to measure, also when inspecting the beam from the S9 reflector by eye, I see the all too common tint that hints towards yellow/green instead to rosy. And as usual it is a fine tint by itself but when compared next to a 3500K 92CRI Nichia 219C beam it loses out bigtime.

hodor
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djozz wrote:
I received my “early” 3500K SST20 leds finally. The mail went wrong and they came back to Blue and he re-sent them.

I reflowed one on a 16mm DTP board and frankly, I’m not impressed. I measured tints at 350mA but other currents do not significantly improve things. The CRI is perfectly fine (over 95CRI in all measurements) but the tints are not below the BBL but in most builds will be clearly above it.

Bare led measured straight from above is ok:

Same led measured at 60 degrees to the side:

Same led with small OP reflector on top (from an S9), the hotspot was measured:

So there is nothing rosy to measure, also when inspecting the beam from the S9 reflector by eye, I see the all too common tint that hints towards yellow/green instead to rosy. And as usual it is a fine tint by itself but when compared next to a 3500K 92CRI Nichia 219C beam it loses out bigtime.

This matches my observations of the 3000K from Hank. Either there are huge variations in the emitters or the manufacturer’s binning is wrong. Minus green filters make the tint much more acceptable (to me) and is the only thing keeping me from swapping them out for XPL-HIs or 219Cs. It’s a shame the tints tend towards yellow/green because I think they’re in a sweet spot of being relatively low price with high CRI and good throw.

maukka
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I have a hunch that if you want less greener tint, choose the lower flux bin, since green is the one thing that will surely add to the lumens. I remember the high CRI 219C D240 bin being greener than the lower bins at least.

BlueSwordM
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Yeah it’s a problem I’ve encountered too. Tint variation, even for a GA3 tint supposed below BBL, is quite large.

There are samples of the SST-20 3500k that are just on the BBL at 1 amp, while others are better in this regard.

This what halted me in my search for 4000k SST-20s and LH351Ds:
I need to order pick 5000pcs to customize tint bins, but without the ability to customize flux bins.

The 3500k from Mouser was a stroke of luck on my part, along with the 3000k sample.

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

netprince
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djozz… what hardware did you use to get that tint reading in your test? It looks interesting.

djozz
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netprince wrote:
djozz… what hardware did you use to get that tint reading in your test? It looks interesting.

A Gossen Mavospec Base, which is a handheld spectrometer targeted to the professional lighting market (but is bought every now and then by a hobby freak). There is similar devices around by Sekonic and other brands.

netprince
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djozz wrote:
netprince wrote:
djozz… what hardware did you use to get that tint reading in your test? It looks interesting.

A Gossen Mavospec Base, which is a handheld spectrometer targeted to the professional lighting market (but is bought every now and then by a hobby freak). There is similar devices around by Sekonic and other brands.

!{width:30%}https://gossen-photo.de/wp-content/uploads/2017/05/MavospecBase_frei_Dis...!

Cool… yeah I was hoping it was something much less expensive. Smile

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DavidEF wrote:
BlueSwordM wrote:
Yeah you're right. The springs have become so advanced that they've become sentient Smile But seriously, with a silver plating and removing a coil from the large spring(which will increase the plastic deformation from 0,9mm to 1,3mm instead), we may be able to get even higher current from the dual spring array.
I'm hoping it makes a noticeable improvement in my BLF Q8 performance. I've made no other mods, but I'm using nice cells. I'm thinking about changing emitters to HI for a little bit more throw like the Sofirn Q8 but not sure of that yet.

 

I've read elsewhere that brass screws can be purchased for the Q8, and will also help get you a bit more brightness. I would definitely recommend XPL-HI or XP-L2 over the stock XP-L. 

 

 

Old Lumens Contest 2020 - Hand-made light category

ZL SC62(w) | Jaxman E2L XP-G2 5A | Purple S2+ XPL-HI U6-3A | D4 w/ Luxeon V | RRT-01 | Purple FW3A, 4000K SST20 | Baton S1
Boruit D10 w/ Quadrupel Fet+1/Anduril | EagTac D25C Ti | DQG Slim AA Ti | Jaxman E3 | UF-T1 by CRX | Olight S15 Ti | Nitecore EX11.2
L6 XHP70.2 P2 4000K FET+7135 | Jaxman M8 | MF02 | Jaxman Z1 CULNM1.TG | Blue S2+ w/ ML Special | Thrunite T10Tv2
Supfire M6 3xXHP50.2, Sofirn C8F, Unfinished: Sofirn SP70, IYP07/Tool AAA hot-rods, Jetbeam E3S
Others: Nitecore EC23 | Nebo Twyst | Streamlight ProTac 1AA | TerraLux LightStar 100

SKV89
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Oh man the DUV is very disappointing. I was hoping it will be -.008 DUV with bare LED so even with optics, it would still not be green.

BTW, I’ve been considering buy a spectrometer for a long while but haven’t yet because of the price. Maybe in the future I will. Why did you choose the Gossen Mavospec Base over Sekonic or any other brands? How does yours compare with Maukka’s spectrometer?

djozz wrote:
I received my “early” 3500K SST20 leds finally. The mail went wrong and they came back to Blue and he re-sent them.

I reflowed one on a 16mm DTP board and frankly, I’m not impressed. I measured tints at 350mA but other currents do not significantly improve things. The CRI is perfectly fine (over 95CRI in all measurements) but the tints are not below the BBL but in most builds will be clearly above it.

Bare led measured straight from above is ok:

Same led measured at 60 degrees to the side:

Same led with small OP reflector on top (from an S9), the hotspot was measured:

So there is nothing rosy to measure, also when inspecting the beam from the S9 reflector by eye, I see the all too common tint that hints towards yellow/green instead to rosy. And as usual it is a fine tint by itself but when compared next to a 3500K 92CRI Nichia 219C beam it loses out bigtime.

djozz
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I’m not sure how maukka’s measuring setup is done, it is not a handheld spectrometer like mine but works via a computer, and possibly an optical fiber is used to collect the light.

And I did not do an extensive search for the best, cheapest or most versatile spectrometer (the Sekonic C700 is cheaper and more versatile, not sure about quality and accuracy, should be ok too), the Gossen spectrometer was recommended and sold to me by a dutch lighting company that also very friendly helped me with calibrating my luxmeter last year. Call me lured into this one Facepalm

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