UniqueFire UF-S7 Cree XM-L U2 7-LED Flashlight with the Kaidomain Driver

14 posts / 0 new
Last post
LumensBandit
Offline
Last seen: 9 years 4 months ago
Joined: 06/04/2012 - 23:07
Posts: 4
Location: Adelaide, South Australia
UniqueFire UF-S7 Cree XM-L U2 7-LED Flashlight with the Kaidomain Driver

G’day from Australia,

I have the Keygos ’8500 Lumens’ (cough) torch which has been handy for hiking at night but I’m selling it at full price and upgrading. I’m currently engaged in a lumens arms race.

I’ve got a UniqueFire UF-S7 Cree XM-L U2 7-LED 5-Mode Flashlight coming in the mail soon:
http://www.manafont.com/product_info.php/uniquefire-ufs7-cree-xml-u2-7led-5mode-flashlight-black-aluminum-alloy-finish-2318650-p-9990

I plan to mod it with the 7 LED Series 3-Mode Low Voltage Protection for Two li-ion Battery Circuit Board which I have alreay received:
http://kaidomain.com/product/details.S020166

I’ve got some 26650 batteries coming soon:
http://www.manafont.com/product_info.php/trustfire-protected-tf-26650-37v-5000mah-rechargeable-liion-battery-1pcset-p-9538
http://www.manafont.com/product_info.php/marsfire-protected-26650-37v-5000mah-rechargeable-liion-battery-1pcset-p-9729

So i’m looking for modding/driver installation tips, additional mod tips and cooling tips.

My regular weekly hike/run is 2 hours duration so I’m hoping that using a lower setting on the final modded torch will give me 2 hours lifespan and then I can use the brighter setting to blaze people/possums/roos, show off and generally be a twat.

Any tips greatly appreciated, I’m keen to set up additional heatsinking and liquid/paste thermal transfer.

My neighbour is an eccentric electronic engineer and one of my good mates is an electronic engineer also so don’t hold back on suggestions.

I plan upon documenting the build and reviewing the final result.
I might also review the unmodified UniqueFire UF-S7 and compare it to the Keygos ’8500 Lumens’.

dthrckt
dthrckt's picture
Offline
Last seen: 12 hours 25 min ago
Joined: 11/08/2011 - 10:11
Posts: 4614
Location: Upstate NY

I suggest measuring the input and output voltage/current of the driver, so that you can calculate efficiency (and therefore, how much heat it makes).

Unless it is exceptionally efficient, you’ll probably need to pot the driver.

I’ve already thought it through because I have the 9x version of the driver sitting here…

My approach would be to find a plastic container that is slightly smaller than the driver cavity (ex. a pill bottle w/ the top/shoulder cut off), and pot the driver in that. Then, cut/peel that off.

You could then use copper or aluminum foil to take up the gap between the potted driver and flashlight body

Or…fill recesses/cover any screws in the cavity (I use play-doh), apply release agent to the cavity (light but complete coat of cooking spray) and then epoxy the potted driver into the light. If you do it right, it will still be removeable Wink

I think the temp spec KD lists for thermal protection is a little lower than it should be…but I guess staying on the safe side is good. You’ll soon find out for us!

Good luck Smile

raccoon city
raccoon city's picture
Offline
Last seen: 16 min 41 sec ago
Joined: 10/06/2010 - 02:35
Posts: 17075
Location: रॅकून सिटी Palm Desert CA USA

G’day, LumensBandit!  Welcome aboard.

Best0270

bandit

Ledsmoke
Ledsmoke's picture
Offline
Last seen: 1 year 3 months ago
Joined: 08/08/2011 - 16:05
Posts: 1995
Location: Denmark

I hope your project turns out just the way you want it Smile

~ Ledsmoke ~

Dutch humor:

[quote=djozz]

 I do not think that the BLF-community ben

LumensBandit
Offline
Last seen: 9 years 4 months ago
Joined: 06/04/2012 - 23:07
Posts: 4
Location: Adelaide, South Australia

Got the Uniquefire 7 LED XM-L U2 flashlight today.
It is just noticably less bright than the Keygos 7 LED XM-L T6 which is a little disappointing to be honest.

Not a big problem though, it could just be a difference in the drivers.

kramer5150
kramer5150's picture
Offline
Last seen: 3 months 4 days ago
Joined: 05/19/2010 - 13:43
Posts: 2331
Location: Palo Alto CA

Some threads that might interest you… I started the TR-J12 thread, contemplating switching drivers to the 55W, 5-XML beast on KD.

http://budgetlightforum.com/node/10517

Not my thread, but a good read too…
http://budgetlightforum.com/node/8041

At any rate, the specs and numbers listed on KD appear to be spot-on.

Richie086
Richie086's picture
Offline
Last seen: 2 hours 56 min ago
Joined: 01/06/2012 - 08:43
Posts: 1660
Location: Long Island, New York
LumensBandit wrote:
Got the Uniquefire 7 LED XM-L U2 flashlight today. It is just noticably less bright than the Keygos 7 LED XM-L T6 which is a little disappointing to be honest.

Hey LumensBandit, do those Trustfire protected 26650 5000mAh batteries have any problems fitting in the Uniquefire? Thanks.

Richie

LumensBandit
Offline
Last seen: 9 years 4 months ago
Joined: 06/04/2012 - 23:07
Posts: 4
Location: Adelaide, South Australia

the TrustFires fit like a charm, so do the MarsFire 26650 3.7V 5000mAH and the orange cells that came with the Keygos ’8500 lumens’

2100
Offline
Last seen: 2 years 11 months ago
Joined: 05/28/2011 - 10:28
Posts: 4512
Location: SINGAPORE

Hi,

For the others looking for such a better driven 7 T6 light, look into the Monster X100 thread. The trustfire X100 is better driven (and bigger) and is about 4amps at the tail with 3 cells (quite a lot of voltage sag) and 2.4A with 4 cells (less voltage sag). So don’t do it like 3 × 4A = 12A and 4 × 2.4A = 9.6A…hey it doesn’t tally man. Big Smile

Expected to be about 3200 lumens OTF.

Your Uniquefire S7 shd be about low 3 amps region with 2 cells decent cells (TF flames 2400, XTAR 2600s) that are fully charged. That’d be a big diff.

sa11 of thaicpf shd have more results soon from his testing (Pok is monitoring).

$82usd shipped for my country from powerwholesale (same folks as Bestinone.net, the generic IMRs that most of us use and the ones that Shaofutzer is selling in CPFM).

MomentumExchange
MomentumExchange's picture
Offline
Last seen: 8 years 3 months ago
Joined: 06/30/2012 - 11:22
Posts: 35
Location: United Kingdom

Let me know how this goes LumensBandit! I did the Tr-J12 mod with the 5 led driver and it’s awesome. I’m keen to see how this turns out.

Rusty Joe
Rusty Joe's picture
Offline
Last seen: 2 hours 9 min ago
Joined: 07/24/2011 - 00:22
Posts: 3577
Location: Houston, TX

Welcome, LumensBandit.

pretzy
pretzy's picture
Offline
Last seen: 3 years 10 months ago
Joined: 04/26/2012 - 06:45
Posts: 1003
Location: Albury Australia

Hi LumensBandit, welcome to the forum.

How do you rate the Keygos 26650’s? I have some but no way to test capacity. There is a deal going on them on ebay and some of the guys were asking for specs on them other than the ones the sellers provide. Cheers, hope the build goes well.

The light shines in the darkness, and the darkness has not overcome it.

MomentumExchange
MomentumExchange's picture
Offline
Last seen: 8 years 3 months ago
Joined: 06/30/2012 - 11:22
Posts: 35
Location: United Kingdom

dthrckt wrote:
I suggest measuring the input and output voltage/current of the driver, so that you can calculate efficiency (and therefore, how much heat it makes).

Unless it is exceptionally efficient, you’ll probably need to pot the driver.

I’ve already thought it through because I have the 9x version of the driver sitting here…

My approach would be to find a plastic container that is slightly smaller than the driver cavity (ex. a pill bottle w/ the top/shoulder cut off), and pot the driver in that. Then, cut/peel that off.

You could then use copper or aluminum foil to take up the gap between the potted driver and flashlight body

Or…fill recesses/cover any screws in the cavity (I use play-doh), apply release agent to the cavity (light but complete coat of cooking spray) and then epoxy the potted driver into the light. If you do it right, it will still be removeable Wink

I think the temp spec KD lists for thermal protection is a little lower than it should be…but I guess staying on the safe side is good. You’ll soon find out for us!

Good luck Smile


What is the best way to pot this driver would you say?
toysareforboys
toysareforboys's picture
Offline
Last seen: 2 years 2 weeks ago
Joined: 01/15/2012 - 02:03
Posts: 511
Location: Whitby, ON

LumensBandit wrote:
I’ve got some 26650 batteries coming soon: trustfire-protected-tf-26650
To get the most output and the least voltage sag try some KingKong ICR 4000’s. The TF 5000’s aren’t 5000 in case you didn’t already know Wink

http://www.aliexpress.com/product-fm/562869981-2012-Excellent-KING-KONG-ICR-4000mAh-3-7v-26650-Rechargeable-Li-lon-battery-For-T6-flashlight-wholesalers.html

-Jamie M.