Sofirn Q8 group buy (gb closed, but try PM to Sofirn for discount)

BTW: BLF/Sofirn Q8 looks like the consequently further development of Roche F12: https://www.fasttech.com/products/1601/10002855/1309304

I put some pics up here

I donā€™t see any similarity to the F12.

The Q8 is supposed to be an updated and improved Sky Ray King.

The Q8 IS an update to the venerable SRK, BLF members redesigned it for optimization. Interesting that Ifowner states that it looks like an F12 which is a small tube light, the M170 is what his link goes to, which is still a lot different light as a triple and with XM-L outdated emitters and a high price tag. Neat looking light though, might have some potential were it not for that price pointā€¦

Ups. Of course Iā€™ve meant M170.

Lot to keep up with here on BLF these days, perfectly understandable! :wink:

BLF and Sofirn Q8 have the same driver version now?

Yes

Thanks
would be better Sofirn Q8 Warm option

On my Sofirn Q8 I found a fault. After setting the step down temperature, then turn it on with a long press for ramping itā€™ll start at max then quickly drop to moonlight and ramp up. Itā€™ll remain like this until I disable thermal step down or change it to timed step down. The temperature setting is causing this

Since it took one year to get a CW option, maybe we will get a WW option in late 2019. Lol

I think this is a known bug that shows up on a few lights. One of my custom drivers has this. Itā€™s best to do one click to turn on, then ramp up. Or cover the end of the light with your hand temporarily if you have to start at moonlight.

I donā€™t think is that difficult do it
they also will incease sales Lol :smiley:

[/quote]

I donā€™t think is that difficult made that
they also will increase sales Lol :smiley:
[/quote]

You could just learn how to add the LEDā€™s yourself or buy the BLF Q8

The difficulty for the company is that they have to invest in the leds up front. They have to buy them in a reel. If sales of the WW version are not good, they are stuck with all these leds and they loose money.

Doing it yourself is definitely the quickest way. Another option might be taking the blf version and slicing the domes off. That would probably make the color a bit warmer, plus give more throw distance.

thanks for your suggestion,
but for me this requires time and skill plus extra money.

If i remember correctly, when i tested my UCL glass lenses on the lux meter (which is broken now after a few good years of non-usage, i think the electronics inside corroded, my place environment sucks! :smiley: ), they are around 98.x% transmittance. So it depends on how much the original lens is letting through, if itā€™s a 91-93% thick glass then the gains are going to be relative more vs good original glass.

Itā€™s all in percentages, if you have a 30k lumens light then of course the gain in absolute lumens would be quite a bit more than a 3k lumens light. Also if the original glass sucks (thick + non-AR etc), then the gain would also be more.

Technicalities aside, just get the Sofirn Q8 (even if you already have the BLF Q8). Itā€™s very difficult to get another light for this performance/runtime/etc etc at just 40usd, or maybe around 50 now. Itā€™s also a relatively low cost light, but itā€™s also very practical in real life + decent built (it survived a 1.5m drop from around my face level). Other that that itā€™s all down to personal preferences like preferring a 2S long thrower vs soda can format.

For the record, I didnā€™t see a gain when changing the MOSFET to a Vishay version so I went with an Infineon FET from another light. Wasnā€™t much difference but hey, you stack the gains ya know? The single biggest difference was swapping to the XP-L2 emitters,

Stock, out of the box, 5775.3 lumens Using Samsung 30Q cells
Added brass screws 5909.85, +134.55
Swapped Blue springs 6020.25, + 110.4 (soldered a copper disc between the 4 springs as an aid, gotta play with copper somewhere!)
Spring bypass 20ga 6330.75, +310.5

Total gain at this point 555.45 lumens

Swapped to an Infineon MOSFET removed from the BLF GT mini for 6379.05, a 48.3 lumen gain (I THINK the Infineon came from the GT miniā€¦)

XP-L2 emitters, 8659.5 lumens, a 2280.45 lumen gain (2884 over the stock out of box performance)
Samsung 25S cells, 9453 lumens, another 793.5 lumens gain
UCLp lens, 9936 lumens, yet another 483 lumens gain

Total mod gains went from 5775.3 lumens to 9936 lumensā€¦.4160.7 lumens gained over the stock light.

Iā€™m obviously pulling quite a bit more power as well, so the extension tube with a second carrier would help in this instance for prolonged run times or usage overall (not necessarily ā€œrun timeā€ as heat is a factor, but how long it can be used in a session)

I may just have to get another light for my next mod plan, leave this work alone and have a light to compare to the upcoming event. :smiley:

Only these points will increase current and battery drain or not?