Fireflies E07 preview

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BlueSwordM
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Well, you’re right.

The gold plating doesn’t oxidize. It’s just that the springs fails first Smile

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

Lexel
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BlueSwordM wrote:
That’s not the problem.

Trying to push 30A through springs is a very, very difficult task.

Honestly, I have to say Nitecore was both lazy, greedy, and impatient in this regard.

Why? While they are right in regards that the springs would oxidize, they didn’t tell why

Well, at 30A, any normal spring would melt pretty much instantly.

Here’s the thought process Nitecore probably had:

1. Let’s use gold plated steel springs. Oh no, they failed at 6A.
2. Let’s use gold plated dual steel springs. Oh no, they failed at 9A.
2. Let’s use dual phosphor bronze springs. Oh no again, they failed at 18A of continuous use.
4. Well, nothing on the market actually exists that can handle the load of a 100-120W light running off of a single cell.
Let’s put a 10A cell in a 30A flashlight and weld nickel plated copper strips instead.

If the engineers, or rather, Nitecore, actually put in effort into designing adequate contacts, they should’ve just looked at BLF and see what members cooked up in spring design.

They could’ve used dual gold plated BeCu C17500 springs, and they would’ve worked quite well if they had waited for a 25-30A cell.

Why do people always think conventional?
You just need not the spring to conduct the current!
just use the spring to push the contact against the battery, you could use the same sort of contact like for spotwelding just with a bit raised button

Lumintop did it here

aginthelaw
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But wasn’t there a bunch of lights that failed in that run? Wasn’t it the Odl20c?

never fear shadows…it means a light shines nearby

Agro
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Or use a springless contact. Like DQG.
In a constant-length light that doesn’t need daily cell swaps (like that Nitecore) one could use a contact screw.

BTW I haven’t seen that Lumintop contact. Looks like a professionally done spring bypass. Smile

ichoderso
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some pictures of my copper E07 in the german forum:

https://www.taschenlampen-forum.de/threads/fireflies-e07-copper-titanium...

Tally-ho
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It’s nice to have the thread back on track with your CuTi E07 pictures but without a TLF account we can only see thumbnails.

ichoderso
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Tally-ho wrote:
It’s nice to have the thread back on track with your CuTi E07 pictures but without a TLF account we can only see thumbnails.

ok, I will load the pictures in a cloud and will publish it direct in this forum…..Sorry

BlueSwordM
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@Lexel, I do know about leaf spring contacts.

I’m just saying Nitecore should’ve used a better solution than making an unreplaceable cell pack.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

ichoderso
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ichoderso
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Tom E
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I have zero interest in this Cu/Ti E07 after being totally disappointed in the D4 Cu/Ti. The D4 gets blaz'n hot in a couple seconds - pretty useless unless you got thermal protective gloves to operate the thing with. Sure, copper is great for thermal transfer, but there's gotta be a better way to use it, like wrapped in aluminum maybe, I dunno.... frown

Agro
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Tom E wrote:

I have zero interest in this Cu/Ti E07 after being totally disappointed in the D4 Cu/Ti. The D4 gets blaz’n hot in a couple seconds – pretty useless unless you got thermal protective gloves to operate the thing with. Sure, copper is great for thermal transfer, but there’s gotta be a better way to use it, like wrapped in aluminum maybe, I dunno…. frown


CRX has wrapped his triple in titanium. Which didn’t work well. Then he replaced that with carbon fibre and is happy with the result.
Nite Shadow
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ichoderso,

They are beautiful and great pics! Thank for going through the effort of posting them here!

Cheers! Beer Thumbs Up

contactcr
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@FireFlies, anything else in the pipeline you want to share? A refreshed E07? A new light?

Tally-ho
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Yes, thank you for taking the time Beer

Tom E
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Yes, luv the pics - great job!! (should have said so before... frown)

I do luv the look of copper, but an E07 with all that power is wut scares me - least alum the rest of the light maybe?

caplang
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It seems E07 Cu edition product page is up on their web
http://www.ff-light.com/index.php?route=product/product&product_id=57

twisted raven
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Great deal at $0.00. May have to get one.
Firelight2
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twisted raven wrote:
Great deal at $0.00. May have to get one.
Yeah I was looking at that too. The price is right!!!

But somehow I don’t think Fireflies actually means to give these away for free. Ughh

Ekstasis
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caplang wrote:
It seems E07 Cu edition product page is up on their web http://www.ff-light.com/index.php?route=product/product&product_id=57

I am not a big fan of the Clear-Anodize aluminum, a flashlight should not look too bling bling it should look cool also..for me as a security guard this would look to bling bling being on duty.
However black with copper head would look better, better contrast also…

I guess we will have to wait and see if this is aluminum or titanium. Anyway… I am waiting for the astrolux competitor.

mattadores
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Ekstasis wrote:
caplang wrote:
It seems E07 Cu edition product page is up on their web http://www.ff-light.com/index.php?route=product/product&product_id=57

I am not a big fan of the Clear-Anodize aluminum, a flashlight should not look too bling bling it should look cool also..for me as a security guard this would look to bling bling being on duty.
However black with copper head would look better, better contrast also…

I guess we will have to wait and see if this is aluminum or titanium. Anyway… I am waiting for the astrolux competitor.

It’s copper main body with TI batt tube and bezel. The other issue besides baller bling is that the TI conducts heat extremely well and makes the entire light, your hand and the cell get extremely hot extremely fast. My raw alu E07 just on stock top of ramp still reaches 50C in like 2-3 mins. Holding a light that’s batt tube is 40+ degrees after a minute wouldn’t be worth the baller bling imo

twisted raven
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TI doesn’t conduct anywhere near as well as aluminum yet alone copper.

Tally-ho
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mattadores wrote:
My raw alu E07 just on stock top of ramp still reaches 50C in like 2-3 mins.

You should be cautious not using turbo too often and for too long if you didn’t correct the LEDs MCPCB because it is not sitting properly on the head’s shelf and the heat isn’t evacuated properly to the flashlight’s body. Particularly if yours is the Nichia which heats up very quickly.
Tally-ho
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The little sister, FireFlies E01

“15mm thick integrated shelf” Shocked

amars7
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Just saw that and came here looking for answers. Doesn't look like there are any yet.

 

That optic though... That's sexy.

BOMBAY
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it looks like the black version had a slightly different optics

SKV89
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Wonder if they can give us a direct front shot of the optic and a disassembled pic to see how the mcpcb looks like.

Lux-Perpetua
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Nice idea but one has to be careful with the SST40. koef3 discovered that the bonding wires already burn with about 9A and more than 7.4A are not reasonable. However, maybe the N5 flux bin is less sensitive to overcurrent than N4 tested by koef3.

http://budgetlightforum.com/node/58900

Tally-ho
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@SKV89, what do you have in mind ?
Personnally with a “big” TIR, i’m immediately thinking to Clemence’s VR21SP4 MCPCB with the hope to find a frosted compatible TIR.

SKV89
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Tally Ho, that is exactly what I have in mind.

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