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

[Quote=BlueSwordM]…

Big spring vs Fasttech Carobronze measurements

Height: 12mm vs 10mm

Top diamater: 4mm vs 7mm

Bottom diameter: 7mm vs 9mm

Wire diameter: 0,8mm vs 1mm

… [/quote]

That looks a little bit messed, better replace with this:

Big spring vs small spring (FastTech Carobronze size) measurements:

Height: 12mm vs 10mm

Top diameter: 7mm vs 4mm

Bottom diameter: 9mm vs 7mm

Wire diameter: 1mm vs 0.8mm

Cheers ^:)

First off, thanks Barkuti!

Second, I may have a slight problem.

You see, the company which I was going to pay for the samples originally, boosted the price a… bit.

It went for 100$US+shipping, to 135$US+shipping, so quite a bit more expensive.

This is getting quite annoying, and expensive just for some spring samples.

I think I’ll just take the risk, and go with my original plan of just buying the 2000 springs from my original manufacturer, since while the prices are the same from both sellers using BeCu C17530, the one I was going to go with is being just absurd with the samples cost.

Since this is my hobby money, I’m willing to take a risk.

Edit: I’m just going to keep looking for a supplier that is willing to even get 1 spring sample.

And besides, I have Paypal to protect just in case something goes horribly wrong, like springs not being made of BeCu C17530, which is quite easy to test just by its electrical properties.

:person_facepalming:

IMPORTANT UPDATE

After careful considerations, I have decided to order the 2000 big springs first since they are the most popular, and I can validate their mechanical and electrical properties much more easily than with a small spring for good reason, and easier to prototype in a light.

Here are the final specs of the spring:

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

- Spring upper diameter: 7mm

- Spring base diameter: 9mm

- Spring thickness: 1mm

- Spring height (free height): 12mm

- Plating: Electroplated zinc

  • Total number of coils: 6

The small springs will be ordered afterwards if the big springs are excellent.

I just want to make sure if everybody is okay with this, and is okay with the amount of springs they ordered
_
I am going with a 7mm top diameter because I have calculated that the yield strength is stronger with a 7mm top diameter rather than a 6mm top diameter because of the small bottom diameter of the spring, so there is a lower chance of plastic deformation occurring wider diameter.

Here is the last updated spreadsheet:

So 1606 big springs and 1122 small springs.

Thanks to all of your for the support!

Sounds good BSM!! :+1: . I love it when a plan comes together…. :beer:
Well done sir……

@teacher, thank you for the support again.

I’m going to be paying for the springs real soon.

If we are lucky, we should have have in 2-3 weeks, 4 if we are unlucky.

Edit: Another thing.

Would you mind if I make the spring 1-1.5mm taller? Just for all types of cells to be accounted for, and small plastic deformation with aging just in case.

Sounds good.

If i have learned one thing from this forum you should never give estimates when it comes to these things :+1:

+1

It’s always better to test them out.

I do think these springs have a lot of potential though.

With sufficient traction, maybe, just maybe, we can get them in other lights, like the BLF Q8 V1.5 I posted a thread about, a new special light from someone you really like, etc.

So, all in all, I hope this GB goes very well.

I hate to ask it again, but would you like a slightly taller spring by 1mm just in case it to make it fit all cells, including protected?

Thank you again, and again.

I have had issues with springs not being tall enough but rarely had a problem with it being too tall.

So an extra 1mm height sounds good to me.

I wounder if dropping the top size to 6mm might be a good idea as well, that way you could flip it upside down for drivers that have very small spring pads (like the TA 17mm).

Ok for the spring being 1mm taller. No cost difference.

Hmm? Why would you flip the spring? Wouldn’t that be the reason to use the small spring instead?

And wouldn’t the bottom 9mm diameter be too wide, and risk a short?

True, I forgot about the small spring.

Okay then.

I’m going with the 7mm top diameter, and 9mm bottom diameter then.

Anyone against this for the springs?

I want to make the order quickly before sleeping.

That size sounds good as does a bit taller. :beer:

Order those puppies…… :wink:

Ok then.

I will place the payment with these final parameters:

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

- Spring upper diameter: 7mm

- Spring base diameter: 9mm

- Spring thickness: 1mm

- Spring height (free height): 13mm

- Plating: Electroplated zinc

  • Total number of coils: 6

Sounds good to me :+1: .

The payment has been sent.

Hope it goes well.

Excellent!! It probably will go fine…… :slight_smile:

But, should something go wrong at least you have PayPal on your side…. hopefully. :wink:

Now, the harder step will be Canadian customs.

But it should go well too. They’re only springs, and they didn’t react to an order of 350 Fasttech Springs, so it should go fine.

I’m going to be calling it a commercial sample, since technically, for springs, it is a small order :beer: :smiling_imp:

UPDATE 6

Payment sent, and order has been started. Let’s get this GB ball rolling.

1. 1mm wire BeCu C17530 38% IACS has been ordered.