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.
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
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.
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?
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.
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
I guess you would still be looking at $70 to $80 once you buy batteries and a charger.
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.
From what I have seen recently:-
Q8 $45-$50 with discount
Lii500 $18-$23
4x30Q $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.
I agree, worth the extra.
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: Amazon.com
If any question, please feel free to contact.
Best Regards
ThorFire
:+1:
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
Ouch, hope you are OK?
And this brings us to:
Yes good point , will do!
NICE!
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.
Its terrific to see you back and ok Miller. Happy catching up. 
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?
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.