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

Flashlight Modding and DIY Parts
214

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!

215

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

216

@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.

217

Sounds good.

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

218

+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.

219

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.

220

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).

221

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?

222

True, I forgot about the small spring.

223

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.

224

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

Order those puppies…… :wink:

225

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
226

Sounds good to me :+1: .

227

The payment has been sent.

Hope it goes well.

228

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

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

229

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:

230

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.

231

Can I get in on this?

I’d like 50 please.

Thanks!

232

50 big or 50 small?

Anyway, I will go to sleep.

See you tomorrow!

233

50 big AND 50 small

Thanks for making these available!!