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

Sofirn · 2018-09-25T03:49:28.000Z

Guess you guys don’t know how amazon warehouse works. After FBA inventory received, the units in boxes are reserved, then amazon staffs make them available unit by unit. If they are not that busy, they can make it in hours, but it seems they are very busy these days, it takes days or a week to make all the units available in listing.

Some orders were taken out of the box and ship directly that’s why it’s fast. Some orders need to wait for all units are available that’s why it takes several days to ship.

I never went to FBA warehouse, but it’s my experience. Hope I’m helping.

deleted-200707 · 2018-09-25T03:54:21.000Z

Sofirn…
It is listed as “Prime” which means 2 day delivery… That isn’t happening!
I’m not saying it is your responsibility…. butt I’m paying a good deal of money for quick shipping.

FritzHID · 2018-09-25T04:00:04.000Z

ordered and paid for 5 lights, all will be here Wed in N. WI.

deleted-200707 · 2018-09-25T04:02:28.000Z

FritzHID:

ordered and paid for 5 lights, all will be here Wed in N. WI.

contactcr · 2018-09-25T04:15:03.000Z

I’m no cool white expert but the tint is fairly even across most of the beam and not much blue or green. I didn’t plan on keeping them but they arent so bad it turns out.

Will probably keep them until the longer tube is released. Wish more of Cree’s stuff was like the XP-L HI

JasonWW · 2018-09-25T04:21:17.000Z

Sofirn:

tm07:

receive my sofirn q8 from Amazon today prime member. On my test fully charge button top 30Q got
4,927 lumen and 120,000cd, I am surprised how far it throw compared to my GT mini.

Sofirn Q8 120,000cd 692M 30q bt 4,927 lumen -
Lumintop GT mini 123,000cd 702M 30q 1,243 lumen. thank you djozz and sofirn!

Really? 692M distance? According to our test, it’s about 550 meters on average.

Is there any good way to test the max distance except using machine?

I got 120kcd as well. The easiest way for me is to measure out 10 meters exactly (plus an inch for the lux meter) against a wall. Then I mark the point where the led goes (10 meters plus one inch). I set the lights led at this mark and turn on turbo. I walk to the wall and move my lux meter up and down to find the brightest spot, then left and right to again find the brightest spot. Then double check that area just to make sure that’s the brightest. This usually takes 30 seconds which is about the right time to take the measurement.

You can turn the light on at a lower level and find the general brightest section of the beam before going to turbo. This way you know the general area to look at.

On my light, I used button top 30Q from Banggood. Cleaned the contacts with a paper towel.
Texas_Ace Lumen Tube calibrated with Maukka’s S2+.

Turn on = 4600lm
20s = 4400lm
30s = 4330lm

Candela = 120kcd = 692 meters

Parasitic drain = 127 micro amps
switch light off = 22 micro amps

I may go to the local hardware store tomorrow and see if they have brass screws the right size. They have a nice selection.

I checked the bump resistance by slamming the base of the light as hard as I could into my palm. No effect.

I could have sworn I saw a driver picture with an extra capacitor added somewhere on it. I took a close look at my driver and I don’t see anything unusual except for a double stack of capacitors on C2.

According to FlashyMike an extra cap here can help, but he added one a lot larger than on the factory Sofirn driver. Maybe this smaller cap is sufficient?

Flashy Mike:

Proposal to avoid power off on bumps

An additional 100 uF ceramic cap over C2 appears to be sufficient in my light. No power hickup on hardest bumps, even scratched the tailcap during tests.

JasonWW · 2018-09-25T04:25:11.000Z

contactcr:

Wish more of Cree’s stuff was like the XP-L HI

You mean the old stuff, before the XP-L2, 50.2, 70.2, etc…?

This newer generation doesn’t look as nice, but it performs a lot nicer. Higher current handling, high output, lower forward voltage, etc…

So it’s all a tradeoff.

toddcshoe · 2018-09-25T04:36:09.000Z

chinooker:

Sofirn…
It is listed as “Prime” which means 2 day delivery… That isn’t happening!
I’m not saying it is your responsibility…. butt I’m paying a good deal of money for quick shipping.

Not all items are available for 2 day shipping. What amazon does is not guarantee 2 day delivery, but 2 day shipping. So once it actually ships then it will be 2 days to get to you.

https://www.amazon.com/gp/help/customer/display.html?nodeId=201118070

That might help a little. It helps me a lot. A bunch of my orders sometimes don’t make it to the $25 to qualify for free shipping. Plus I watch a lot of Prime Video.

contactcr · 2018-09-25T04:39:20.000Z

I will never use xpl2 or xpg2/3 again. Lh351 and luxeon v serve a flood role way better. Sst20/40 over xpg anything too. 50.2 is just OK. 70.2 is in a league of its own depending on the host. Im sure I’ll like xhp35 but wont use it till a better boost comes out.

contactcr · 2018-09-25T04:43:09.000Z

Amazon will easily credit you a month of Prime if they miss their guarantee (just do an online chat). However, what toddcshoe said still applies. The lights were posted for sale but not ready to ship yet and it said as much on the sale page.

trailhunter · 2018-09-25T05:25:00.000Z

I have Samsung MJ1 batteries, 10A max draw, will these suffice for the Q8?

eas · 2018-09-25T05:40:06.000Z

Yeah, so Sofirn sent me a code anyway, and I couldn’t resist. It’ll be here Thursday, though I could have picked it up at an Amazon locker on Wednesday, if I’d wanted to, but not any of the ones closest to my house…

JasonWW · 2018-09-25T05:46:06.000Z

trailhunter:

I have Samsung MJ1 batteries, 10A max draw, will these suffice for the Q8?

MJ1 can do way more than 10A.

Do you mean they are protected and rated at 10A max?

Or do you mean 10A continous?

They will work fine. They won’t give max output like a high drain, but still work fine. You might get 500 less lumen compared to button top 30Q, but to your eye it will be hard to see a difference.

Brainsick67 · 2018-09-25T12:51:10.000Z

FritzHID:

ordered and paid for 5 lights, all will be here Wed in N. WI.

You would…lol put those Samsung emmiters in there.

deleted-200707 · 2018-09-25T14:09:38.000Z

contactcr:

Amazon will easily credit you a month of Prime if they miss their guarantee (just do an online chat). However, what toddcshoe said still applies. The lights were posted for sale but not ready to ship yet and it said as much on the sale page.

No it did not say that!! and it still says mine has not shipped!!

Free Shipping for Prime Members
FREE Delivery by Thursday
If you order within 2 hrs 40 mins

My delivery date still shows Friday

contactcr · 2018-09-25T14:13:34.000Z

I assure you it did say that when I ordered on Friday. Clearly something is delaying your order but they were not immediately available to ship when the first orders came in so take that however you want. Just open up a chat like I said: https://www.amazon.com/gp/help/customer/contact-us/

Look at their C8F listing to see what I mean:

https://www.amazon.com/Powerful-Tactical-Flashlight-Rechargeable-Excluded/dp/B07GS2F948/
“In stock on October 5, 2018.
Order it now.”

deleted-200707 · 2018-09-25T14:26:27.000Z

contactcr:

I assure you it did say that when I ordered on Friday. Clearly something is delaying your order but they were not immediately available to ship when the first orders came in so take that however you want. Just open up a chat like I said: https://www.amazon.com/gp/help/customer/contact-us/

Look at their C8F listing to see what I mean:

Amazon.com
“In stock on October 5, 2018.
Order it now.”

you don’t even know what I’m talking about
The Q8 does not say that

never mind, I cancelled the order

contactcr · 2018-09-25T14:46:25.000Z

Sorry didn’t know you just wanted us to listen to you complain. I would have grabbed a beer and a chair instead of trying to be helpful.

deleted-200707 · 2018-09-25T15:38:50.000Z

I chatted w/AZ and they just repeated that my Q8 would arrive on Friday
No explanation, no reason for others ordering days later and having already received the light
Thanks for listening. I feel better now.

VictorB · 2018-09-25T15:17:04.000Z

mine has arrived today. Quite fast compared to other Aliexpress orders. Everything seems to work correctly in the flashlight. very happy to have bought it.