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

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.

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.

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. :smiley:

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

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

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

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:

Short summary to save people a click:

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.

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.

@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

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

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

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

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

No bueno.

Too expensive for the “small” quantities we have

Silver plated instead?

No, sorry.

No precious metal plating.

Only nickel/copper+nickel for higher conductivity.

I received your “letter” last Monday.

They are pieces of jewelry.

Thanks!!

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?

I’m aiming for 0,15$US for the lower performance springs.

Here’s the data for comparison:
1st gen nickel plated springs: 0,30$US
2nd gen silver plated springs: 0,39$US

3rd gen copper(50um)+silver: Slightly higher than 0,39$US
3rd gen copper(50um)+nickel: Lower than 0,39$US, but higher than 0,30$US

3rd gen budget phosphor bronze nickel plated spring: 0,15$US
3rd gen budget phosphor bronze spring copper(50um)+nickel: 0,19$US

4th gen large BeCu C17500 copper(60um)+Silver: Between 0,40$US and 0,50$US.

5th gen Ultimate spring(in the works): ???

measurements?