who wants beryllium springs

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djozz
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Old-Lumens wrote:

Thanks. Here's the specs.

Specification

Part Number

LBC 028A 01 AAA
Outside Diameter0.216 in
Hole Diameter 
Wire Diameter0.028 in
Load At Solid Length2.135 lb
Free Length0.355 in
Rate9.37 lb/in
Solid Length 
Rod Diameter 
Number of Coils 
Total Coils4.7
FinishPRE-COATED WITH SILVER
MaterialBECU

 

That equates to:

OD 5.5mm

Free Length 9.0mm

Wire Diameter 0.7mm

 

Appreciate the info. I will need to pass, too small for my needs.

Thanks

 

If this is the size of the spring in this group buy it is mostly interesting for small EDC type lights, while beryllium springs makes a real difference at many amps. I'm still in for a few though, but only about 10. If the springs are bigger, say diameter 10mm, length 12mm, I will want more.

FlashPilot
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… and wire diameter of .9 – 1.0mm

kronological
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I’ll take 10. Just let me know when this will happen.

No one, after lighting a lamp, puts it away in a cellar nor under a basket, but on the lampstand, so that those who enter may see the light.

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18sixfifty
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I’m in for 20.

I’m a junky, I mod lights so I can sell lights so I can buy more light to mod so I can sell lights to buy more lights to mod.

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Mattaus wrote:

If any other Aussies want in on this I’ll reship for us if needed.


Thanks. Generous offer.

 

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

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nitro
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Thanks Mattaus this will help me out a lot 

Hikelite
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What's the alloy used for these springs, there are several beryllium copper alloys.

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If they can do this, I'll take 20 for sure!

http://www.youtube.com/watch?v=BFyWPeou4Gc

djozz
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Sooo, I'm still desperate for springs that do not require copper braiding, what's up with this attempt?

Anyone else who is going to pick this up? Not me, I'm in Europe, someone in the US who has access to the few companies there that make them, or someone with chinese connections.

I found these on Amazon (again for the US-based; they do not ship to Europe anything else but books):

http://www.amazon.com/Silver-Coated-Beryllium-Copper-Compression-Spring/...

Not the exact type of springs that we want but they would fit some mods?

Rufusbduck
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These might be a better size if cut to length.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

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I might have a European lead on them. A small danish company specialises in springs for electrical breakers and such. They have ... similar to what we want but not quite.. It may take a single run of them. They do not list MOQ on their site but mentions that it is subject to order details. 

 

Edit: Missing letters and halfwit sentenses. I am tiired!

~ Ledsmoke ~

Dutch humor:

[quote=djozz]

 I do not think that the BLF-community ben

djozz
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Ledsmoke wrote:

I might have a European lead on them. A small danish company specialises in springs for electrical breakers and such. They have ... similar to what we want but not quite.. It may take a single run of them. They do not list MOQ on their site but mentions that it is subject to order details. 

 

Edit: Missing letters and halfwit sentenses. I am tiired!

Funny you're onto that, I asked for a quote from a dutch company also, two days ago. Haven't heard back from them yet, I fear for a steep price...

texaspyro
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There are a couple of sellers of BeCu springs on Ebay right now… they look about the right size for a lot of lights.

djozz
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texaspyro wrote:
There are a couple of sellers of BeCu springs on Ebay right now... they look about the right size for a lot of lights.

I tried to find them on ebay and could not find them. Link?

The quote I asked is for 10mm diameter base, 5mm top, 15mm hight 1mm wire thickness conical spring made of beryllium copper. No answer yet.

Rufusbduck
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There seem to be a number of companies that might do this. Here is one.

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

djozz
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Rufusbduck wrote:
There seem to be a number of companies that might do this. "Here is one. ":http://www.currancoilspring.com/pages/prodserv.htm[/quote]

I contacted one of these companies, but obviously I chose one in the Netherlands and Ledsmoke one in Denmark.

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Would also be interested in a bunch. Europe based would suite me just fine.

texaspyro
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djozz wrote:
I tried to find them on ebay and could not find them. Link?

http://www.ebay.com/itm/Compression-Springs-silver-plated-beryllium-copp...

http://www.ebay.com/itm/Lot-100-Beryllium-Copper-compression-springs-1-4...

First one looks expensive with shipping, ships to US only.

Second one is a lot of 100.

Rufusbduck
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To get an estimate we need an idea about size and volume (stay off this please, TP. Remember the forum rules). I’m guessing that a good choice for spring size could get us up over 1000 units without much trouble. Anyone get a response on MOQ yet?

Three Tanna leaves to give him life, nine to give him movement. But what if he eats the whole bag?

Scott

djozz
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My supplier now asks if I would like to settle for phosfor-bronze springs because they have to acquire the beryllium-copper, looks like a dead end.

BTW, intl-outdoor sells a Be-Cu spring for a good price now, 11mm diameter, 5mm height, so a very short one. I hope Hank will do longer ones as well in the future Smile

Hikelite
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djozz wrote:

My supplier now asks if I would like to settle for phosfor-bronze springs because they have to acquire the beryllium-copper, looks like a dead end.

BTW, intl-outdoor sells a Be-Cu spring for a good price now, 11mm diameter, 5mm height, so a very short one. I hope Hank will do longer ones as well in the future Smile

There are at least 3 phosphor bronze types as far as I know, rated around 15% which is very good compared to 2% ratings for various stainless steel materials I have seen on some of US spring manufacturer.  While some rate some stainless steel alloys up to 15% as a final material (with no mention of actual alloys or use), none of the alloys specifically used for springs according to US manufacturer are rated more than 2%.
All these alloys are not to be taken simple, it is like saying "aluminum" when in reality exact alloy and temper make the final features relevant, not "aluminum alloy" or other ambiguous terms, even "stainless steel" is an ambiguous term, much more than phosphor bronze is.

djozz
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I have got the quotes for a conical compression spring, base diameter 10mm, top diameter 4.5mm, height 15mm (I figured this is a good size for tail switch springs, and chopped down a bit it is good as driver spring as well):

-200 pieces phosfor-bronze springs: 163 euro (190 dollar), that is a dollar/spring

-200 pieces Be-Cu springs: 1125 euro (1400 dollar), that is 7 dollar/spring Surprised

He mentioned that making 2500 pieces is a lot cheaper so I asked for a quote of that as well:

-2500 pieces Be-Cu springs: 1380 euro (1600 dollar), that is 0.64 dollar/spring.

That is very affordable but of course there is no way I can sell 2500 springs to you guys, so that is out of the question for me.

I took some risk and ordered the 200 phosforbronze springs. I will test them for functionality and resistance, and if they are any good I will sell them to whoever wants them (dollar a piece, envelope plus some shipping will be ~3 dollar).

 

Anyone interested in 2500 Be-Cu springs Evil ?

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Get a quote for 5000 Be-Cu springs let’s see if we can get them down to 0.02 dollars/spring :bigsmile:

Old-Lumens wrote:
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