(BLF) Sofirn Q8 V1.5: The XPL HI monster, DIY parts + Extended 8x18650 tubes GB Interest List

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djozz
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Flashy Mike wrote:
. Are XHP50.2 suitable at all for a FET driver? I guess I have read somewhere they have a lower forward voltage than XHP50.

Any recommendation from the LED guru(s)?


This is a good question but not because of the voltage. I have a XHP50.2 running fine without driver on 2 high drain 18650 batteries so at least some XHP50.2 leds can handle that. But I had one dying at much lower current in a light with 3A boost driver from KD. Something with a sensitivity for unseen voltage spikes?, I don’t know. At least the Q8 will not use a boost driver but a simple direct FET driver, could be advantageous for the XHP50.2
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Great news for several reasons.   Thanks for the heads up BSM.

JasonWW
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I’ve been patiently waiting 9 months for a simple CW version to be offered for sale.

Is 5700K to 6000K too much to ask for?

KSGER STM32 2.1S Soldering Station Videos - Review Soon

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

djozz
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JasonWW wrote:
I’ve been patiently waiting 9 months for a simple CW version to be offered for sale.

Is 5700K to 6000K too much to ask for?

We (the Q8 team) had a flashlight made with one very well thought-over led choice for simplicity of the process. We never intended to proceed the Q8 project after that with extra versions, so just waiting for a cool white version to spontaneously happen was not a very favorable approach.

But now that Sofirn is involved that may be different, they tend to listen to what is popular on BLF. So ask them for a cool white version and convince them that it will sell.

contactcr
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JasonWW wrote:
I’ve been patiently waiting 9 months for a simple CW version to be offered for sale.

Is 5700K to 6000K too much to ask for?

Reflow these and enjoy:

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SPHW...

JasonWW
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contactcr wrote:
JasonWW wrote:
I’ve been patiently waiting 9 months for a simple CW version to be offered for sale.

Is 5700K to 6000K too much to ask for?

Reflow these and enjoy:

https://www.digikey.com/product-detail/en/samsung-semiconductor-inc/SPHW...


I can’t reflow stuff. To send the mcpcb off to be reflowed costs way too much.

KSGER STM32 2.1S Soldering Station Videos - Review Soon

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

BlueSwordM
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Don’t you have an electric skillet?It work wonderfully with reflowing MCPCBs.

Buy yourself a 10$ one like I did, and you will be off to cool white land.

Along with some solder paste of course.

contactcr
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I use an even worse setup and it works every time.

I have an induction cooktop and use a super old rusty one of these with knife marks on it. I dont recommend it because when it gets hot and cools off the center has a tendency to “pop” in and out with temp changes.

JasonWW
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djozz wrote:
JasonWW wrote:
I’ve been patiently waiting 9 months for a simple CW version to be offered for sale.

Is 5700K to 6000K too much to ask for?

We (the Q8 team) had a flashlight made with one very well thought-over led choice for simplicity of the process. We never intended to proceed the Q8 project after that with extra versions, so just waiting for a cool white version to spontaneously happen was not a very favorable approach.

But now that Sofirn is involved that may be different, they tend to listen to what is popular on BLF. So ask them for a cool white version and convince them that it will sell.


I spent so much time on this project that I feel like a Q8 Team Member. Big Smile

Remember back when it was said that once the group buy was over Thorfire would take over and possible rename the light and do whatever they wanted? I was really hoping they would add a CW option. It seemed like a no brainer as the majority of flashlight buyers in the world (excluding BLF and CPF) prefer CW.

At this point in time I have no idea if a CW version would sell. I may be the only person in the world that wants this, but I’m not willing to pay double the price to modify it. I don’t need it that badly. I’ll just wait and see what Sofirn does.

KSGER STM32 2.1S Soldering Station Videos - Review Soon

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

contactcr
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Being a novice to all of this stuff I find soldering e-switch wires (or anything for that matter) 1000x harder to do than reflowing. If you practice once or twice with the right solder paste and an old MCPCB I have no doubt u can figure it out.

BlueSwordM
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Thorfire taking the design and doing whatever they wanted with, and they did not do anything

Looking at how Thorfire refuses to sell any replacement parts, it does not surprise me that they did not do this. I think it is because the BLF Q8 is a constant stream of revenue for them, and any departure from the original design would disrupt that revenue flow, so they are not willing to take any risk to change the design or do what they want with the Q8.

TLDR: The original BLF Q8 is good enough for Thorfire not to take any R&D risks.

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djozz wrote:
This is a good question but not because of the voltage. I have a XHP50.2 running fine without driver on 2 high drain 18650 batteries so at least some XHP50.2 leds can handle that. But I had one dying at much lower current in a light with 3A boost driver from KD. Something with a sensitivity for unseen voltage spikes?, I don’t know. At least the Q8 will not use a boost driver but a simple direct FET driver, could be advantageous for the XHP50.2
Strange. Both LEDs from the same batch? Was the dead LED soldered properly or could it have been too much heat (don’t know in which light this LED has been used)?
iosala
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JasonWW wrote:
It seemed like a no brainer as the majority of flashlight buyers in the world (excluding BLF and CPF) prefer CW.

At this point in time I have no idea if a CW version would sell. I may be the only person in the world that wants this.

I want one as well!!!

Hopefully they will offer the CW option!!!

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There was brief talk of the haikelite mt07s tubes being made available which lego with the Q8. You just need to line up the tube once then the tailcap just works to support cells in series. That still may be easier than redesigning carriers.

contactcr
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Jtm94 wrote:
There was brief talk of the haikelite mt07s tubes being made available which lego with the Q8. You just need to line up the tube once then the tailcap just works to support cells in series. That still may be easier than redesigning carriers.

Except for the fact that it’s Haikelite Sick and they already said they dont want to sell just tubes

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Jtm94 wrote:
I’d hardly call my Q8 scorching after a minute of turbo with spring bypasses and Luxeon Vs. Stock it never got hot at all even after several minutes just warm to the touch and I clocked mine in around 4500. All temp regulation off. After bypasses it gets warm a lot faster, but still nothin like the Emisar D4.

Have you removed the stock thermal regulation? If you remove it in the settings for q8 will get scorching hot on turbo. Not in 1 minute but it does.

2/9 Fox Co (2009-2015) Semper Fi 0311/0331 Rifleman/Machine Gunner
Blf has changed a lot since I've been here. Lots of snow flakes and easily offended over nothing. When the forum use to be great and people joked around and could take a joke. It's a forum it's not that serious. Let's make BLF great again!

Speed4goal
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BlueSwordM wrote:
Thorfire taking the design and doing whatever they wanted with, and they did not do anything

Looking at how Thorfire refuses to sell any replacement parts, it does not surprise me that they did not do this. I think it is because the BLF Q8 is a constant stream of revenue for them, and any departure from the original design would disrupt that revenue flow, so they are not willing to take any risk to change the design or do what they want with the Q8.

TLDR: The original BLF Q8 is good enough for Thorfire not to take any R&D risks.

This is really disappointing in my opinion from thorfire. The q8 was designed so people could easily MOD it. Spare parts should be readily available. Like I need an new battery tube. Mine is damaged. So thank you for the link.

And thank you Sofirn for people up the slack from thorfire. Really disappointed in thorfire

2/9 Fox Co (2009-2015) Semper Fi 0311/0331 Rifleman/Machine Gunner
Blf has changed a lot since I've been here. Lots of snow flakes and easily offended over nothing. When the forum use to be great and people joked around and could take a joke. It's a forum it's not that serious. Let's make BLF great again!

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JOYDAN wrote:

Why don’t I have a rope to hang on such a long thing, so heavy and heavy? I have to carry 8 18650 batteries with me. I think this design is a failure

I use lanyards on my lights whenever possible. This makes it possible with the Q8.

https://www.amazon.com/gp/product/B01KF2TWAQ/

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

leaftye
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This light should be popular among those that want to carry a flashlight as a self defense weapon. Add a several battery tubes and you have yourself a nice bat.

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

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leaftye wrote:
I use lanyards on my lights whenever possible. This makes it possible with the Q8.

https://www.amazon.com/gp/product/B01KF2TWAQ/

Ummm, almost 200bux for a 4pak? Pass… Big Smile

I got these for a buk each.

09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0

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It was $7 for me. 2 day Prime delivery.

The low mode should be lower.

Reviews: Efan IMR18350 700mAh 10.5A, <a href="http://

Speed4goal
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I’m going to get one, some people might not care for it. But I have use for the extended run time without having to change batteries. When your covered in paint overspray having to clean up some to change batteries gets aggravating. At the park it’s not as big of a deal. But I use my light for work. I would also like the q8 with a little more throw. Should be easy enough to MOD for those that want to do 6v emitters. But I feel it’s kinda over kill. All the monster can lights with 6v emitters all overheat in a minute or so. Ya we will get 12000 lumens for 1 minute with that set up. I’d rather 5000 lumens for a couple hours for my use.

2/9 Fox Co (2009-2015) Semper Fi 0311/0331 Rifleman/Machine Gunner
Blf has changed a lot since I've been here. Lots of snow flakes and easily offended over nothing. When the forum use to be great and people joked around and could take a joke. It's a forum it's not that serious. Let's make BLF great again!

JasonWW
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Speed4goal wrote:
I’d rather 5000 lumens for a couple hours for my use.

I think that is a bit too ambitious. 5000 lumen is stock and it heats up quick to the thermal limit. 2500 to 3000 lumen might be sustainable.

KSGER STM32 2.1S Soldering Station Videos - Review Soon

Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch, SMO reflector.

Supfire L5-S thread with XHP70.2, Texas Avenger FET driver, NarsilM v1.0 ramping firmware, 2 x 26350 cells, lighted side switch. My mini L6! 

Thorfire S70S with MTN FET driver, RampingIOS (D4) and custom lighted side switch.

10 NarsilM user videos for BLF Q8, GT, GT70, GT Mini, Astrolux S43 and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices - Headlight List with prices, specs and features

Jaxmnve M1 Stainless 10180 Keychain light Review  - Lumintop ODF30 Review - Sofirn C8F 21700 Teardown and Review, Sofirn SP33 v2 XHP50.2 Review - My Sofirn Q8 Results - Astrolux S43S 219C Test Results - Lumintop GT Mini Test Results

severide
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Any news on this?

BlueSwordM
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Not really.

contactcr
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Bump. Sofirn taking on too many projects

BlueSwordM
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Yep. It is quite problematic. I hope one of them doesn’t go south because of this.

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contactcr wrote:
Bump. Sofirn taking on too many projects

They are taking on the BLF Lantern project too, & were awaiting for updates from them.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

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DBSAR wrote:
contactcr wrote:
Bump. Sofirn taking on too many projects

They are taking on the BLF Lantern project too, & were awaiting fro updates from them.


I think and hope that they are building expertise as well atm (not only from BLF, they are eager to learn stuff and have some new people), and this hopefully results in better flashlights. But the process may be slower than we would like.
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djozz wrote:
But the process may be slower than we would like.

I prefer to wait and get a good product than buy quickly made crappy light.

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