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

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BlueSwordM
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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.

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

teacher
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Sounds good BSM!! Thumbs Up . I love it when a plan comes together…. Beer
Well done sir…..

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BlueSwordM
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@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.

contactcr
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Sounds good.

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

BlueSwordM
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+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.

BlueSwordM
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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.

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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).

BlueSwordM
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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?

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BlueSwordM wrote:
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.

BlueSwordM
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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.

teacher
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BlueSwordM wrote:
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 (9mm bottom – 7mm top) as does a bit taller. Beer

Order those puppies…… Wink

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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BlueSwordM
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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

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Sounds good to me Thumbs Up .

BlueSwordM
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The payment has been sent.

Hope it goes well.

teacher
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BlueSwordM wrote:
The payment has been sent.

Hope it goes well.

Excellent!! It probably will go fine….. Smile

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

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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BlueSwordM
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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 BeerEvil

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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.

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Can I get in on this?

I’d like 50 please.

Thanks!

BlueSwordM
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50 big or 50 small?

Anyway, I will go to sleep.

See you tomorrow!

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50 big AND 50 small

Thanks for making these available!!

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10 small, 10 large springs, thanks!

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Nice work BlueSwordM. Thumbs Up

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

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contactcr
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Protected batteries with high current springs? Sick

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contactcr wrote:
Protected batteries with high current springs? Sick

It’s not ideal, but there are protected cells with 15A and 20A circuits.

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

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Where Jason, links please…

Dale

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Acebeam’s high drain 18650 and 21700 batteries are protected and do more than 15A.

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DB Custom wrote:
Where Jason, links please…

I don’t have time to look them up right now, but I’ll try to remember where I saw them.

I think it was the 18650 from Imalent that did 15A which uses a 30Q.

Then the 20A was a 21700 5100mah from Acebeam.

Then I think there was a 26650 from Orbtronic that was 15A.

I think there were a few more and I know I wrote them in a thread, but I can’t remember where. I wish I could do a search for things I wrote across all the threads.

I’m not particularly into protected cells, but I’ll try and find the others later today if your interested.

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

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That’s a good lead, I’ll see if I can find them based on that. I don’t use protected either but if there are some really good ones out there I wouldn’t mind having some for testing and sharing purposes. While I don’t normally have someone else using my lights it would be nice to be able to have a cell that could run em as they’re built to run and yet not be killed by someone getting over zealous. Wink

Dale

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