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

1270 posts / 0 new
Last post
nokoff
nokoff's picture
Offline
Last seen: 3 months 6 days ago
Joined: 12/12/2013 - 20:26
Posts: 344
Location: East Coast USA

Interested. Amazn US. Thanks

Nokoff..still Made in China 山寨主義

joker145
joker145's picture
Offline
Last seen: 5 months 1 week ago
Joined: 10/21/2017 - 13:52
Posts: 188
Location: United States, Bay Area

any benefits to switching to brass screws?

The Best Revenge Is Massive Success

Newlumen
Newlumen's picture
Offline
Last seen: 1 month 3 weeks ago
Joined: 05/27/2017 - 00:19
Posts: 2092
Location: United states
joker145 wrote:
any benefits to switching to brass screws?

No clue.. I think rubber switch is pretty responsive..

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

nokoff wrote:
Interested. Amazn US. Thanks

Welcome to forum. The Group Buy is over. The price is now $50.

https://www.amazon.com/gp/aw/d/B07GR2HM2Y/ref=sxts_1?ie=UTF8&qid=1537793...

I think there are 6 left, but I’m not sure.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

joker145 wrote:
any benefits to switching to brass screws?

I think a couple hundred lumen. Maybe just 100 lumen. Something like that.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

joker145
joker145's picture
Offline
Last seen: 5 months 1 week ago
Joined: 10/21/2017 - 13:52
Posts: 188
Location: United States, Bay Area

Nice, Goin to switch them out now. I can’t wait.

The Best Revenge Is Massive Success

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

joker145 wrote:
Nice, Goin to switch them out now. I can’t wait.

It’s the 4 tail screws that give a benefit. They are button head M2.5 × 5mm.

Bypassing the springs give the most benefit, maybe 300 more lumen. It will be drawing about 20A on good high drain cells.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 19 min ago
Joined: 11/29/2017 - 12:34
Posts: 5524
Location: Canada

Actually, just replacing brass screws can yield an increase of 400 lumens on XPL-HDs.

Bypassing springs, or replacing them with copper alloy ones can yield up to a 1200 lumen boost.

However, on an XPL-HI Q8, the lumen output boost will not be as great because of the higher FV of the XPL-HIs.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

klrman
klrman's picture
Offline
Last seen: 1 hour 32 min ago
Joined: 11/07/2016 - 22:44
Posts: 2613
Location: Canada

JasonWW wrote:
joker145 wrote:
Nice, Goin to switch them out now. I can't wait.
It's the 4 tail screws that give a benefit. They are button head M2.5 x 5mm. Bypassing the springs give the most benefit, maybe 300 more lumen. It will be drawing about 20A on good high drain cells.

 

Where would you buy those screws?  Can't find button head brass on Ali.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

BlueSwordM wrote:
Actually, just replacing brass screws can yield an increase of 400 lumens on XPL-HDs.

Bypassing springs, or replacing them with copper alloy ones can yield up to a 1200 lumen boost.

However, on an XPL-HI Q8, the lumen output boost will not be as great because of the higher FV of the XPL-HIs.


Really? I didn’t think the increases where that high. I am tempering my expectations. Lol

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

klrman wrote:

JasonWW wrote:
joker145 wrote:
Nice, Goin to switch them out now. I can’t wait.
It’s the 4 tail screws that give a benefit. They are button head M2.5 × 5mm. Bypassing the springs give the most benefit, maybe 300 more lumen. It will be drawing about 20A on good high drain cells.

 


Where would you buy those screws?  Can’t find button head brass on Ali.


Local hardware store?

I think people were buying them on ebay. This was a year ago when the Q8 first came out so my memory is fuzzy. You might check the Q8 modding thread.

http://budgetlightforum.com/node/57613

http://budgetlightforum.com/node/55026

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

contactcr
Offline
Last seen: 6 hours 9 min ago
Joined: 05/19/2017 - 18:52
Posts: 2948
Location: US
klrman
klrman's picture
Offline
Last seen: 1 hour 32 min ago
Joined: 11/07/2016 - 22:44
Posts: 2613
Location: Canada

JasonWW wrote:
klrman wrote:

JasonWW wrote:
joker145 wrote:
Nice, Goin to switch them out now. I can't wait.
It's the 4 tail screws that give a benefit. They are button head M2.5 x 5mm. Bypassing the springs give the most benefit, maybe 300 more lumen. It will be drawing about 20A on good high drain cells.

 

Where would you buy those screws?  Can't find button head brass on Ali.

Local hardware store? I think people were buying them on ebay. This was a year ago when the Q8 first came out so my memory is fuzzy. You might check the Q8 modding thread. http://budgetlightforum.com/node/57613 http://budgetlightforum.com/node/55026[/quote]

 

 Nothing like that at our local hardware store!  Will do some looking around those threads thanks.  Just unscrewed my BLF Q8 cap and those screws are countersunk, not button or pan heads.

klrman
klrman's picture
Offline
Last seen: 1 hour 32 min ago
Joined: 11/07/2016 - 22:44
Posts: 2613
Location: Canada
JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

klrman wrote:
JasonWW wrote:
klrman wrote:

 


Where would you buy those screws?  Can’t find button head brass on Ali.


Local hardware store?

I think people were buying them on ebay. This was a year ago when the Q8 first came out so my memory is fuzzy. You might check the Q8 modding thread.

http://budgetlightforum.com/node/57613

http://budgetlightforum.com/node/55026

Nothing like that at our local hardware store! Will do some looking around those threads thanks. Just unscrewed my BLF Q8 cap and those screws are countersunk, not button or pan heads.


I thought you were buying them for your Sofirn Q8?

Only the first batch of the original Q8 used countersunk screws. On all later batches they switched to button head/pan head. The countersunk screws kinda suck.

Do you have an Ace Canada store near you?

In the US we have Ace Hardware and my local store has a huge selection of nuts and bolts and specialty fasteners. Plus there’s another hardware store that is privately owned which also has lots of nuts and bolts. Have you been to all the hardware stores near you? Or do you maybe live in a small city that doesn’t have a lot of hardware stores?

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

klrman
klrman's picture
Offline
Last seen: 1 hour 32 min ago
Joined: 11/07/2016 - 22:44
Posts: 2613
Location: Canada

Yes for Sofirn but I thought it would be the same as the BLF Q8.  I purchased my BLF Q8 way later than the first batch am surprised I got the first run with the countersunk screws.  So much for Banggoods honesty!  Just checked and I purchased it on Feb of this year.  

 

No Ace Hardware up here and the other hardware stores don't carry something like that around here either.  Yeah, live in a small town but have three large hardware stores, all chain stores.  Those button head or pan head brass screws will be fine to use on my BLF Q8 too won't they?  

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

klrman wrote:
Those button head or pan head brass screws will be fine to use on my BLF Q8 too won’t they?

Use the button/pan head style. I think your driver has the countersunk screws as well. You can switch that also, but it has no effect on performance. Just make sure your driver screws are below the ring height so your batteries don’t touch it.

Or just leave the drivers screws stock.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

klrman
klrman's picture
Offline
Last seen: 1 hour 32 min ago
Joined: 11/07/2016 - 22:44
Posts: 2613
Location: Canada

JasonWW wrote:
klrman wrote:
Those button head or pan head brass screws will be fine to use on my BLF Q8 too won't they?
Use the button/pan head style. I think your driver has the countersunk screws as well. You can switch that also, but it has no effect on performance. Just make sure your driver screws are below the ring height so your batteries don't touch it. Or just leave the drivers screws stock.

 

Just ordered some from that ebay link thanks.  

Henk4U2
Henk4U2's picture
Offline
Last seen: 6 hours 26 min ago
Joined: 02/13/2014 - 17:52
Posts: 3357
Location: The heart of the Netherlands (GMT+1)

Tried to order on AE. First with request to adjust price in message field in my cart.
Later same question to Sofirn in the message center in “my” AE.
Same response: none whatsoever. Well: two can sing that song. Consider me out of this buy

Maybe I just got stuck between two bits in their answering bot. IDK, but I’m done with Sofirn.

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

Nachtfeuerzeug
Nachtfeuerzeug's picture
Offline
Last seen: 3 weeks 5 days ago
Joined: 08/31/2013 - 16:10
Posts: 498

This is my first soda can light and wow, in catching up, the discussions are many! 

Well, I got lucky and was able to work at home, which somehow(?) coincided with delivery day ;)!

It occurred to me that I don't have 4 same brand/model button tops so tonight,  I loaded it with 2x 35Es, 1x blue 25R and a Nitenumen 3400 protected (Nu 188). I was a little concerned for the 25R, being it was 'higher drain capable' than the others.  To my surprise, they all only dropped to 3.92V.

This Q8 is heavy and I didn't want to secure it with just my hand so I used an old, heavy duty  rechargeable drill lanyard and attached it to the 1/4" mounting hole with a socket head screw. It got back to the house without incident although my high torque labrador jerked me everywhere till he wore out. We found all the jackrabbits in the nonbuilt-out neighborhood phases with no lack of light or throw! Can't wait to explore Lost Maples SNA, Hill Country SNA, Kickapoo Caverns...!

 

EDC

FW3A, SST20 4000K || S21A, Crescendo MTNdd 20mm, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, LH351D 4000K | L2 w/6A 20mm SST40 driver, XP-L HI | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | SK Zoomie Nichia 5000k, C2 driver | EagleTac clip | Ultrafire C2 w/5A 17mm & XM-L2 | Nichia 219C 2700K with gray S6 |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3)

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

Henk4U2 wrote:
Tried to order on AE. First with request to adjust price in message field in my cart.
Later same question to Sofirn in the message center in “my” AE.
Same response: none whatsoever. Well: two can sing that song. Consider me out of this buy

Maybe I just got stuck between two bits in their answering bot. IDK, but I’m done with Sofirn.


So you ordered from AE back when the group buy was still active, but they never adjusted the price for you?

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

Henk4U2
Henk4U2's picture
Offline
Last seen: 6 hours 26 min ago
Joined: 02/13/2014 - 17:52
Posts: 3357
Location: The heart of the Netherlands (GMT+1)

JasonWW wrote:
Henk4U2 wrote:
Tried to order on AE. First with request to adjust price in message field in my cart.
Later same question to Sofirn in the message center in “my” AE.
Same response: none whatsoever. Well: two can sing that song. Consider me out of this buy

Maybe I just got stuck between two bits in their answering bot. IDK, but I’m done with Sofirn.


So you ordered from AE back when the group buy was still active, but they never adjusted the price for you?

They didn’t. But never mind. I will find myself another light for my four spare 30Q batteries.
Already un-subscribed the thread.

You are a flashaholic if you are forced to come out of the closet, to make room for more flashlights.

ToyKeeper
ToyKeeper's picture
Online
Last seen: 14 min 10 sec ago
Joined: 01/12/2013 - 14:40
Posts: 10291
Location: (469219) 2016 HO3
BROODMASTER wrote:
This is my first soda can light … I don’t have 4 same brand/model button tops so tonight,  I loaded it with 2× 35Es, 1x blue 25R and a Nitenumen 3400 protected (Nu 188).

Mixing cells is dangerous. Putting four different cells in, especially at different voltages, can easily cause problems. They will equalize their charge as quickly as the cells can manage, with some cells basically charging others at a rate far higher than they are intended to be charged. This can melt the springs or damage the batteries or make it overheat.

Get four identical cells and treat them as a set, like they’re a single unit. Married, basically. They charge together and discharge together and always go in the same light at the same time.

Nachtfeuerzeug
Nachtfeuerzeug's picture
Offline
Last seen: 3 weeks 5 days ago
Joined: 08/31/2013 - 16:10
Posts: 498

ToyKeeper wrote:
BROODMASTER wrote:
This is my first soda can light ... I don't have 4 same brand/model button tops so tonight,  I loaded it with 2x 35Es, 1x blue 25R and a Nitenumen 3400 protected (Nu 188).
Mixing cells is dangerous. Putting four different cells in, especially at different voltages, can easily cause problems. They will equalize their charge as quickly as the cells can manage, with some cells basically charging others at a rate far higher than they are intended to be charged. This can melt the springs or damage the batteries or make it overheat. Get four identical cells and treat them as a set, like they're a single unit. Married, basically. They charge together and discharge together and always go in the same light at the same time.

 

Hi TK... we are up late!  They were all at 4.2V when I started but I'll definitely have a matched set, soon. I should be putting in an order with Mountain Electronics soon! Thank you!

EDC

FW3A, SST20 4000K || S21A, Crescendo MTNdd 20mm, LH351D 4000K || SP32A, SST40 5000K

Recent/ongoing Mods:

S2+, TexAven 17mm, LH351D | S21A, Crescendo 20mm, LH351D 4000K | L2 w/6A 20mm SST40 driver, XP-L HI | C8+ OP, DD XHP-50

SP32A w/SST40 5000K | SK Zoomie Nichia 5000k, C2 driver | EagleTac clip | Ultrafire C2 w/5A 17mm & XM-L2 | Nichia 219C 2700K with gray S6 |

Reviews:

Sofirn SP31 v2.0 Tactical Flashlight (Cree XPL HI) || Sofirn SD05 Scuba Diving Flashlight || Sofirn SC31 USB Rechargeable (XP-G3)

contactcr
Offline
Last seen: 6 hours 9 min ago
Joined: 05/19/2017 - 18:52
Posts: 2948
Location: US
BROODMASTER wrote:
Hi TK… we are up late!  They were all at 4.2V when I started but I’ll definitely have a matched set, soon. I should be putting in an order with Mountain Electronics soon! Thank you!

She doesn’t mean just the voltage. The cells have different characteristics and resistance so while you run the light the “worst” cell will be over stressed trying to balance out to the rest of them. In the meantime, just run the 2× 35E’s (and leave 2 slots open) and you shouldn’t even notice an output difference.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

Actually, running different cells in parallel is pretty safe (if all start at the same voltage). If you run a strong battery like a 30Q and an old laptop pull 2000mah, they will work together. Under load the 30Q will draw more power to compensate for the weaker battery, but their voltages will always be the same. There is no chance of one battery voltage getting too low.

It’s when the batteries are in series that you need a matched and married set.

Still, it is a good idea to run 4 of the same batteries.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

teacher
teacher's picture
Offline
Last seen: 9 months 2 weeks ago
Joined: 02/23/2016 - 19:04
Posts: 9596
Location: NE & SW Alabama
ToyKeeper wrote:
BROODMASTER wrote:
This is my first soda can light … I don’t have 4 same brand/model button tops so tonight,  I loaded it with 2× 35Es, 1x blue 25R and a Nitenumen 3400 protected (Nu 188).

Mixing cells is dangerous. Putting four different cells in, especially at different voltages, can easily cause problems. They will equalize their charge as quickly as the cells can manage, with some cells basically charging others at a rate far higher than they are intended to be charged. This can melt the springs or damage the batteries or make it overheat.

Get four identical cells and treat them as a set, like they’re a single unit. Married, basically. They charge together and discharge together and always go in the same light at the same time.

contactcr wrote:
BROODMASTER wrote:
Hi TK… we are up late!  They were all at 4.2V when I started but I’ll definitely have a matched set, soon. I should be putting in an order with Mountain Electronics soon! Thank you!

She doesn’t mean just the voltage. The cells have different characteristics and resistance so while you run the light the “worst” cell will be over stressed trying to balance out to the rest of them. In the meantime, just run the 2× 35E’s (and leave 2 slots open) and you shouldn’t even notice an output difference.

+1 …. BROODMASTER….. Great advice from TK & contactcr, I hope you heed it. Thumbs Up

Your ‘playing with fire’ doing it how you mentioned you were. Shocked

You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant 

 .................................. "Slow is Smooth, Smooth is Fast" ...................................

       Texas Lumens Flashlights / M4D M4X Deals : sign up - save $$$$  

         Rudeness Level _ mΩ _ {width:70%} _ LightWiki _ LED Tint Chart  

      Xlamp size chart _ BatteryU _ Flashaholic? Need Professional Help???            TheOriginal _ TAB _ LightSearch _ BatterySearch _ 14500's _ DiCal 

 

                                             

BlueSwordM
BlueSwordM's picture
Offline
Last seen: 4 hours 19 min ago
Joined: 11/29/2017 - 12:34
Posts: 5524
Location: Canada

TLDR: If you want to put in cells in parallel, always check their voltages/SOC.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

teacher wrote:

Your ‘playing with fire’ doing it how you mentioned you were. Shocked

No, it was fine. They were all fully charged and at 4.2 volt.

People mix all different battery sizes in parallel setups.

It’s in series that you need all them to be identical.

Like with the BLF GT. You can put 4 identical 3500mah in one carrier and 4 identical 2000mah in the other carrier. This will work fine as the carriers are in parallel.

The 4 battaries in each carrier are in series, so those 4 need to be identical and matched up.

When batteries are in series the voltages can vary and the low voltage protection only sees the total voltage. So you could have 3 cells at 3.2v and one at 2.4v and the lvp would see 3v total and think it’s fine, but really one battery has gone much too low. This can ruin that battery and make it dangerous to continue using.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

JasonWW
JasonWW's picture
Offline
Last seen: 3 hours 7 min ago
Joined: 10/22/2016 - 11:41
Posts: 12463
Location: Houston Texas

contactcr wrote:

The cells have different characteristics and resistance so while you run the light the “worst” cell will be over stressed trying to balance out to the rest of them.

Nope, the strongest cell will be stressed the most, not the weakest.

Texas Ace Lumen Tube and JoshK Sphere calibrated with Maukka lights

Click this to go to signature links. I'm still around, just not reading many new threads.

Pages