Q8, PMS SEND TO THOSE WITH ISSUES BLF soda can light

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Flintrock
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As has been discussed a couple of times before (not complaining, these discussion threads are long) conduction through the threads is not the primary ground route and is easy to stop.  Conduction through the threads requires conduction from the driver to the head case, which means through the screws.  Simply removing the screws or replacing them with a dab of glue or adding plastic washers to them fixes that.  The main thing that unscrewing the tube does is not disconnecting the the tube from the head, it's disconnecting the tube from the driver itself.  The screws really aren't needed at all actually.  They just keep the driver from flopping around a little when the tube is off. Do use a properly fitting screw driver and preferable a rubber band to remove the screws.  Don't let the screwdriver turn without turning the screw.

Flintrock
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 I kind of wonder if people with more bump trouble than average are using non-sufficiently button-top-ish cells.  There are some flat top cells that will barely work, but the guard ring is about even with the positive terminal.  Some pressure compresses the guard ring and gets a connection, but that could require some pressure and be less reliable during moments when pressure is reduced.

gamezawy
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I just got my Q8 toke ages to come but finally got it and i am happy, i almost buy any BLF special made light even if i have similar

I will make the spring bypass mod, Another thing should i change the wires from the Driver to the led bored with a thicker one for better current or the stock wires is good enough ? i am hoping for 6A per led

JasonWW
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You can prevent a bump from breaking contact by lengthening the battery. If you add a magnet to the negative side it causes the spring to compress more creating more tension. No more bump turn off.

Zulumoose
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I was running my v1 Q8 with one flat top 30Q until my button top set arrived. With the flat top the wrap got a little scratched and it was too easy to reset, just a medium bump against the heel of my hand. With 4 button tops I would have to hurt myself or hit a solid object quite hard, very acceptable spring tension.

perhaps a solution for those who have insufficient tension is to insert a silicone blob inside the cone of one or more springs?

Beam me up!

WalkIntoTheLight
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gamezawy wrote:
I just got my Q8 toke ages to come but finally got it and i am happy, i almost buy any BLF special made light even if i have similar

Yes, I’ve bought a few different BLF lights, and they’re all amazing. Okay, there’s always a minor nitpick here and there, but overall they’re way better than most production lights. Especially when you consider the leading features and attention to details like the user interface, tint, and heatsinks.

Most production lights are designed for mass market appeal. BLF lights are designed for the user.

samnavy
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Recently got to stretch the legs of my Q8’s on hunting trip to Texas. While the weight of these is just too much to justify carrying over long distances, I used them with great success in and around the ranch, and always had one in the 4-wheeler just in case an excuse came up to use them. The ability to effectively light up several acres at once was great for critter-searching on the quick.

Now a couple of my buddies want one. I told them I only paid $40, but I see BG and AliEx have them for $60… is this the going rate now that the group buy is over?

-Sam

joechina
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samnavy
look here
Cupon from M4DM4X
https://m4dm4x.com/blf-q8-arrived/

JasonWW
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joechina wrote:
samnavy
look here
Cupon from M4DM4X
https://m4dm4x.com/blf-q8-arrived/

I guess you would still be looking at $70 to $80 once you buy batteries and a charger.
cabfrank
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More than that. A decent charger such as the Lii-500 and four decent cells will be $50ish all combined. It’s very much worth it though.

Zulumoose
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From what I have seen recently:-

Q8 $45-$50 with discount
Lii500 $18-$23
4×30Q $16-$22

All together $79-$95 depending on what discounts you manage to grab, Black Friday is just around the corner.
Biggest potential saving on that ($10) would be opting for a +-$7 on discount Lii non-LCD 4 bay charger (I got one for $5 recently), half speed and no analysis. If you are lucky with discounts you would come in just under $70.
Worth the extra for a Lii500 though.

Beam me up!

cabfrank
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I agree, worth the extra.

shirnask
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I got an email from ThorFire:

Dear Customer,

Great News! ! BLF Q8 flashlight will be available on amazon USA soon. If you would like to order more, we have limited quantity promo codes(49% off)and the price would be the same as Group Buy: $40.

And If it is convenient for you, could you please spare a few minutes and help to share an honest review of BLF Q8 light on amazon? Here is the product link.
BLF Q8: https://www.amazon.com/dp/B0773Q46D3

If any question, please feel free to contact.
Best Regards
ThorFire

DavidEF
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shirnask wrote:
I got an email from ThorFire:

Dear Customer,

Great News! ! BLF Q8 flashlight will be available on amazon USA soon. If you would like to order more, we have limited quantity promo codes(49% off)and the price would be the same as Group Buy: $40.

And If it is convenient for you, could you please spare a few minutes and help to share an honest review of BLF Q8 light on amazon? Here is the product link.
BLF Q8: https://www.amazon.com/dp/B0773Q46D3

If any question, please feel free to contact.
Best Regards
ThorFire

Crown Thumbs Up

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

The Miller
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Oh boy, phone issues and real things needed doing, to beat at night, and it all looked so peaceful (phone not getting emails, only some “update” marked things, so I did get some mails, and thought it was really not busy and was glad with that, have to do things before the real frost sets.
BUT seeing a lot of activity here, heck a new topic 312+ post about GT logo, and 416+ new posts in the GT topic, oh oh.
Here it seems better.
One things that popped out

fixvid wrote:
Hi guys,
Did a nasty mistake and i fried my Q8’s springs. I put one battery in reverse and it completly toasted my springs. Now they are mushy and batteries don’t even make contact with the brass ring. Do you know where i could find a replacement back pcb with springs?
Thx in advance.

!http://oi65.tinypic.com/2mnkepw.jpg!

Ouch, hope you are OK?
And this brings us to:

hank wrote:
> springs … PCB … Thorfire

Miller, would you point out to Thorfire that it’s traditional in most countries to sell replacement parts for products* that may blow parts up, like fuses?

Yes good point , will do!

The Miller
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DavidEF wrote:
shirnask wrote:
I got an email from ThorFire:

Dear Customer,

Great News! ! BLF Q8 flashlight will be available on amazon USA soon. If you would like to order more, we have limited quantity promo codes(49% off)and the price would be the same as Group Buy: $40.

And If it is convenient for you, could you please spare a few minutes and help to share an honest review of BLF Q8 light on amazon? Here is the product link.
BLF Q8: https://www.amazon.com/dp/B0773Q46D3

If any question, please feel free to contact.
Best Regards
ThorFire

Crown Thumbs Up

NICE!

PBWilson
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The Miller wrote:
Oh boy, phone issues and real things needed doing, to beat at night, and it all looked so peaceful (phone not getting emails, only some “update” marked things, so I did get some mails, and thought it was really not busy and was glad with that, have to do things before the real frost sets.
BUT seeing a lot of activity here, heck a new topic 312+ post about GT logo, and 416+ new posts in the GT topic, oh oh.
Here it seems better.
One things that popped out

fixvid wrote:
Hi guys,
Did a nasty mistake and i fried my Q8’s springs. I put one battery in reverse and it completly toasted my springs. Now they are mushy and batteries don’t even make contact with the brass ring. Do you know where i could find a replacement back pcb with springs?
Thx in advance.

!http://oi65.tinypic.com/2mnkepw.jpg!

Ouch, hope you are OK?
And this brings us to:

hank wrote:
> springs … PCB … Thorfire

Miller, would you point out to Thorfire that it’s traditional in most countries to sell replacement parts for products* that may blow parts up, like fuses?

Yes good point , will do!

This says a great deal about how dedicated you have been, The Miller. It’s impressive and very worthy of praise. You have gone the extra mile and continue to do so. Really. It’s rare in this day and age to see someone dedicated and helpful like you are. Your karma bank must be pretty dang full! So many people try to get by with the bare minimum but that’s not you at all. Thank you.

MRsDNF
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Its terrific to see you back and ok Miller. Happy catching up. Smile

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

alternety
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Has anyone found a heat conducting material that also lubricates for the threads between the head and cylinder? It could get a bit more heat out of the hot part.

I thought of heat sink transfer goo. But nothing that says it won’t dry out or turn liquid. Drying out could be a bad thing. Liquid metal bad on the not drying out side.

whitecitadel
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alternety wrote:
Has anyone found a heat conducting material that also lubricates for the threads between the head and cylinder? It could get a bit more heat out of the hot part.

I thought of heat sink transfer goo. But nothing that says it won’t dry out or turn liquid. Drying out could be a bad thing. Liquid metal bad on the not drying out side.

Copper Grease/Copper Ease/Copper Slip would have good thermal conduction I would expect, not sure of its viscosity at high temperatures but its commonly used on the back of brake pads to dampen vibration and does not seem to melt and run out, so expect it to be OK at Q8 head temps?

RapidLux
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The Miller wrote:

hank wrote:
> springs … PCB … Thorfire

Miller, would you point out to Thorfire that it’s traditional in most countries to sell replacement parts for products* that may blow parts up, like fuses?

Yes good point , will do!

Try to get the best possible springs for the spare tail mcpcb, to let us get extra 1000 lm. And maybe a kit with 4 brass screws.

Flintrock
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And a tail cover with lanyard holes Wink  TF might make double on these if they play it right.

Flintrock
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I think all the same arguments that applied to the pages of electrical grease discussion pretty much apply to thermal grease but even more (more because for thin layers thermal connection is affected far less than electrical), and the conclusion then was, just get a good thin grease. 

Lazy-R-us
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Flintrock wrote:

And a tail cover with lanyard holes Wink  TF might make double on these if they play it right.


If we are looking for an aftermarket tail cover, I’d like to see one with enough room inside for a charging board. I’m fine with taking the tail cover off to plug in a USB cable. Some minor mods to the tail PCB and a TP4056 board and we would be well on our way to onboard charging.

Lazy-R-us

RapidLux
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Better make a tail cover that supports magnetic charging instead, that would make charging much easier since there will be no need to unscrew the cover to plug it in.

Paul321
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Flintrock wrote:

And a tail cover with lanyard holes Wink  TF might make double on these if they play it right.

Thumbs Up

Paul-

Lazy-R-us
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RapidLux wrote:
Better make a tail cover that supports magnetic charging instead, that would make charging much easier since there will be no need to unscrew the cover to plug it in.

My first thought was that this is a genius idea. Around the house and even in the car it would be a quick way to charge it up and would definitely be quicker and cause less wear. My second thought was that battery banks have USB, but not inductive ports. Which means that you would need to carry a wireless charger as well if you were taking this camping for instance. My third thought is that the obvious answer to this is a product that I have not seen – a USB battery pack with a built in inductive charge pad.

Which I think has now become my next project.

Qi charge pad (currently out of stock).
USB Power bank
switch, batteries and a housing…

[edit]annnnd like most of my ‘brilliant’ ideas someone else has already had it, done it, and posted a video on how to do it. Still going to work on it.[/edit]

Lazy-R-us

justanotherguy
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I apologize.. The thread is long, my memory poor..
I impulsively purchased 8 30Q batteries on eBay… Didn’t pay attention, and they are flat top…..I was a bit mad at myself, but this morning I popped them in..and the light worked ,ramped right up to Max output…
But is there something I should worry about, am I forgetting something . The battery discussion was so long ago….
Thanks
Tony

anyone in NE ILLinois into get togethers?

Lazy-R-us
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justanotherguy wrote:
I apologize.. The thread is long, my memory poor..
I impulsively purchased 8 30Q batteries on eBay… Didn’t pay attention, and they are flat top…..I was a bit mad at myself, but this morning I popped them in..and the light worked ,ramped right up to Max output…
But is there something I should worry about, am I forgetting something . The battery discussion was so long ago….
Thanks
Tony

There is a possibility that the wrap may get torn while screwing the tube on. It is also not certain that all four batteries are making contact. which means that your run time will suffer and your cells would get mismatched. Do you solder? IIRC test results indicate that the best performance is from flat top cells that have been modified with a solder boob – a small mound of solder on the positive terminal. A quick search of BLF for either “solder boob” or “solder blob” should get plenty of how to’s.
[edit] I just found a nice vid thread Barkuti did using ‘Roses metal’, but the technique is the same regardless.[/edit]

Lazy-R-us

DavidEF
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justanotherguy wrote:
I apologize.. The thread is long, my memory poor..
I impulsively purchased 8 30Q batteries on eBay… Didn’t pay attention, and they are flat top…..I was a bit mad at myself, but this morning I popped them in..and the light worked ,ramped right up to Max output…
But is there something I should worry about, am I forgetting something . The battery discussion was so long ago….
Thanks
Tony

If you can, you should put a drop of solder on the top of each of them. They’ll make better contact that way. As it is, you have no way of knowing whether ALL of the cells are contacting completely all the time. You might end up with unbalanced cells.

EDIT: Lazy-R-us beat me to it! Silly

The Cycle of Goodness: “No one prospers without rendering benefit to others”
- The YKK Philosophy

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