Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

kerneldrop

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I'd have to ask @speckacuda on how the QTC material would react, but you can mount an SBT90.2 on a 16mm board.

There's a lot of super lumen LEDs that are available.
SFT40 would be nice

@speckacuda - How much current can you pump thru the QTC material? SFT40 would be super nice. SBT90.2 is kinda pushing on that too much side, but SFT40 is an excellent all around super-lumen LED.
 

kerneldrop

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SFT40 and 519a about to be ready to go in the Nugget

SFT40 will hit 2600 lumens at 10 amps, 2,000 lumens at 5 amps.

But with lumens comes heat and heat kills the LED eventually.

I prefer nice tint and balanced output like what the 519a can do, but I have these to try

3FD6DDA1-A3F8-43F7-90EB-DCD717CD0F53.jpeg
 
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kerneldrop

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I have them all except 519a 4000k. I can’t find them. I have all of the 219b, which is still a fantastic LED.

Here are all of the R9080 offerings:
1659618831186.png


And you can dedome the 519a to change the tint, too.
A 4500k dedomed is around 3500k. A 5700k dedomed is around 4200k.
5000k dedomed is perfection. @PoliceScannerMan can tell us what tint that is…I don’t remember off hand.

@Berserker26 - I make these. Some I get made because it’s cheaper, but any Nichia I do myself.
 
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TentativeMeteorite

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Hopefully it’s ok to ask here, but I’ve got a QT-L on the way and I was wondering which of these emitters would work without frying. Thanks everyone!

E17A 1850k
SST-20 Deep Red
Nichia 219b
Nichia 519a dedomed
Edit: it appears from recent comments the 519a works
 

kerneldrop

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Hopefully it’s ok to ask here, but I’ve got a QT-L on the way and I was wondering which of these emitters would work without frying. Thanks everyone!

E17A 1850k
SST-20 Deep Red
Nichia 219b
Nichia 519a dedomed
Edit: it appears from recent comments the 519a works

E17A is max 700mA
SST-20 Deep Red is max 2000mA. S
real-world use tends to be higher, but the hotter it gets the shorter the life is. There are no exceptions to that. Heat kills LEDs.

I'm assuming the QTC current is only limited by what the battery drain is...I'm not sure the technology. I'd email them.
I don't think the light has a driver.
 

TentativeMeteorite

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E17A is max 700mA
SST-20 Deep Red is max 2000mA. S
real-world use tends to be higher, but the hotter it gets the shorter the life is. There are no exceptions to that. Heat kills LEDs.

I'm assuming the QTC current is only limited by what the battery drain is...I'm not sure the technology. I'd email them.
I don't think the light has a driver.
Thank you, much appreciated. I’ve been a fan of flashlights for a good while, but I’m just finally figuring out how some of the stuff works. Embarrassingly, I didn’t think about using the battery to limit power. Oops!
 

TentativeMeteorite

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My tracking says Friday. I just ordered a few dedomed 519a in different CCTs to try out. 5700, 4500, 2700. Hank said their 16mm board isn’t compatible with the E17A so I’m hoping the DD 2700k fills the void.

Edit: does anyone have battery recommendations that are safe for the QT-L with 519a? I’ve got Samsung 30Q and Sanyo NCR18650GA here.
 

wolfstyle

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My tracking says Friday. I just ordered a few dedomed 519a in different CCTs to try out. 5700, 4500, 2700. Hank said their 16mm board isn’t compatible with the E17A so I’m hoping the DD 2700k fills the void.

Edit: does anyone have battery recommendations that are safe for the QT-L with 519a? I’ve got Samsung 30Q and Sanyo NCR18650GA here.
May I ask where you bought the dedomed 519A?
 

TentativeMeteorite

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May I ask where you bought the dedomed 519A?
From Hank Wang at Emissar/Noctigon. I emailed him and he asked me to order whatever number of this linked item I wanted and then email him my order number with what emitters I wanted and he would “ship according,” as always. Great service from Hank! He has domed and dedomed, but not sure if he has 4K or 5k. He sometimes has stuff that isn’t listed, but I didn’t ask this time. These are red boards, I would think white boards might be a bit better for tint, but I’m familiar with Hank so that’s where I went. I’d really like to learn to solder my own, but I’m just starting to learn how all this stuff works.

Item link
 
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