Springs!!

[hIKARInoob]

I know Beryllium from the aerospace application as well, due to stupid high specific E-modulus. Odd this is not mentioned in the osha link.

[BlueSwordM]

The problem is the quantity.

Do you think I should make an group buy interest page for the Beryllium Copper Springs in the same size as the Djozz springs? They can handle twice the current, so they could be a replacement for spring bypasses.

If I can have enough interest in enough springs(at least 500 springs to be sold) then I will consider making the order.

[djozz]

My springs had a base diameter of 10mm, that was just a bit too wide for a standard tailboard, I would suggest a 9mm base diameter.

I’d buy a few

[BlueSwordM]

You are lucky. Here are the measurements I gave to the Chinese companies:

- Material: C17530(Berrylium Copper) with IACS of 38%

- Spring upper diameter: 7mm

- Spring base diameter: 9mm

- Spring thickness: 1mm

- Spring height: 12mm

- Plating: Zinc plating/gold plating

- Total number of coils: 5

- Free length: 0 mm

UPDATE

I am going to make an interest list soon enough.

[Agro]

Maybe some retailers like MTN would be interested in getting large quantities?

[Tom_Tom]

@hIKARInoob

I know Beryllium from the aerospace application as well, due to stupid high specific E-modulus. Odd this is not mentioned in the osha link.

I’ve also used it in F1 brake calipers. Superb, but so expensive, as for the the protection we had to use machining them …

Now banned in F1, got to keep it real.

Ideal for springs though, nothing better.

[SKV89]

@BlueSwordM

Well, guys, we may have a problem.

Most of the Chinese companies got back to me, and they said that while they said Beryllium Copper 38% IACS is not much more expensive than phosphor bronze, they would have to order separetely the material, and for 200 pcs, it would probably exceed my original price point.

The only way I could get them at a reasonable price would be at onne of thr companies which sells 1000 pcs of them for 350$ everything included, since it is a custom order

Now, that would be a bit overkill. Even a group buy would be hard pressed to sell all of these units, and I do not have enough hobby money to afford all of that, and space.

So, unless someone, or many people, are willing to split the difference, I don’t think the group buy is going to be successful.

So it is a bit problematic.

Maybe you can talk to Richard at Mountain to see if he wants to buy a portion of it for his store.

[BlueSwordM]

Ahh that would be perfect. I did not think about Richard. He would perhaps like it. Especially now since he could sell many more springs since while the short springs are excellent, the problem is they are short.

[contactcr]

Can the 1,000 order minimum be between two sizes?

I think 9mm base diameter is still too wide to fit onto a small board with 7135’s loaded on the same side as spring. If you could make a skinny one and one as you describe to meet the minimum that might be better

[BlueSwordM]

I will try to make 500 of each. Let me just update my interest post, and I will ask the Chinese company.

[g_damian]

I’ll probably take at least 20. So for 10 lights only… I don’t think that 1000 is unrealistic number for group buy.

[BlueSwordM]

Of course. I will add you to the list in my other post.

BLF Interest list for Very High Current Beryllium Copper springs Pt1(ENDED)

Well hello again BLF, BlueSwordM here! So, as you might all know, we are a bunch of nice people who want the highest power possible out of our flashlights. Usually, we have to bypass springs, and that requires time, effort, and experience, and soldering a spring is much easier than doing a spring bypass. Especially in multi-cell lights like the Haikelite MT09R. And let’s face it: it does not look good too, and there is a chance of the bypass breaking We have solutions like phosphor bronze spr…

[BlueSwordM]

@djozz, how many springs are you interested in?