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

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?

Fingers crossed they arrive soon :slight_smile: Finally got the rest of my MF01 going, it’s spring time!

I’d be interested in buying some of the new batch of springs when they are available.

No problem.

@Oweban and others, I’m sorry again.
Being delayed by Canada Post for almost 3 weeks, and my own mistake of forgetting my bag full of packages for 2 weeks delayed the packages by more than a month…
I’ve just had so much work these days, and I’ll be free starting May 25th, so I’ll be up full force.

I made sure I shipped everything last Friday. I also included some extra goodies to excuse myself over my mistake.

On another note, here are the Rev 3 spring specs.

Large BeCu spring(Rev 3.0):
Material: Beryllium Copper C17530 38% IACS
Spring upper diameter: 6,25mm
Spring base diameter: 9mm
Spring thickness: 1,0mm
Spring height: 12mm
Total number of coils: 5
Plating: Copper(25 um)+ silver

Small BeCu spring(Rev 3.0):
Material: Beryllium Copper C17530 38% IACS
Spring upper diameter: 4,50mm
Spring base diameter: 5,75mm
Spring thickness: 0,8mm
Spring height: 10,5mm
Total number of coils: 5
Plating: Copper(20um) + silver

Ultimate conical spring(Rev 5.1)
Material: Beryllium Copper Titanium C17550 60% IACS

That last one actually comes from one of the R&D centers of the spring manufacturer.
It’s a prototype alloy, from what I understand, having slightly less beryllium and a touch of titanium.
But its conductivity crushes C17530 by a long shot while having similar mechanical properties.

If we can actually get this in our springs, that would make them the absolute best.
However, the price would easily double, or even triple, according to the manufacturer.
Will stay in the R&D phase for now. :slight_smile:

So yeah, good news for absolute overkillers.
Had to erase this. Don’t want people getting hyped up over nothing.

You can put me down for 20 small and 20 large! Thanks!

Excellent.

No probs mate, these things happen :slight_smile: Totally understand. Hope things are going okay with work though.