Recent content by ecmp

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

    Left would be a Fraz QT 18650 and right would be Fraz Lumenite 2. Difference seems to be 16mm vs 20mm MCPCB, 26.5mm vs 35mm optic (emitter could both be Samsung 351). Could there be other reasons for the difference in output?
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Which flashlight fanatics group?
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    @Mgizler QT-SS 18650 is still available in both matte and stainless as I type this post. https://frazlabs.com/product/qt-ss-18650/
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Poked around with a DMM (new to these), got the following values: Fraz QT-SS 18650 Ohm / resistance reading Head only w/o QTC: 2.27 Head only w/ QTC: none Head w/ body w/o QTC: 2.26
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Some info on a QTC, would still need to be verified if it is the same one on QT-SS, hope it can help. There are posts on driving the LED without QTC. As these LEDs have a lower forward voltage and amperage rating than the cells used, there could be some resistance built in the Fraz. ————————...
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Then set the ideal mix into a single LED…
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Searched for Quartz optic the same size as Carclo 10048 used in Fraz QTSS but none found. Not enough interest in the market yet. Allows the use of UV LEDS!
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Hi @vand3537, October drop likely got delayed. “New drop coming soon!” posted on Fraz’ IG around Nov 1. Good luck!
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Interesting to know, thank you! Could be perfect for dialing in domed / de-domed LEDS!
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Amazing runtime! Keeppower has 6000 mAh 10A protected cells…
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Got mine! Love the simplicity of operation, heft, and build quality! Have that artifact as well at certain lower brightness levels and about 1-1/2 inches away from the object. Disappears at longer distances or higher brightness settings. Intentionally looked for it to compare to yours. Would...
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Thank you for the inputs everyone! Much appreciated! Opted Fraz for having the widest range of options available. There is an internal resistance that allows a higher voltage and amperage rated battery to run a LED with lower forward voltage and amperage on direct drive. Personal objective in...
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Thank you for sharing @geisto! Congratulations on snagging a QTSS! What is the max ampere rating of the battery?
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Thank you! Suppose the minimum forward voltage of a LED is 3V and the capacity of the battery is currently at 3V as well. Can a LED draw beyond it’s minimum forward voltage? ie., Would leaving the flashlight in the ‘on’ position overnight allow the LED to drain the battery beyond 2.5V?
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    Fraz Labs Mechanical Flashlights (formerly QTC Non-Battery Crush)

    Thank you! For unprotected batteries, what is the worst that can happen? Would going below the minimum battery voltage only ruin the battery or will it result to catastrophic battery failure?
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