(prototype) the GT Mini

1310 posts / 0 new
Last post
JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas

Mikeadoo wrote:
Thanks Jason! So how does this group buy thing work? I know I got to put my name on some list but IDK how to do that Sad

The sign-up list is over here.
http://budgetlightforum.com/node/60983

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

Mikeadoo
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/12/2017 - 22:27
Posts: 344
Location: Chesterfield, Michigan

Delta_V wrote:
cd = candela. kcd = kilocandela = 1000 candela.

Candela is a measure of light intensity. The two basic characteristics we measure for an LED are output (in lumens) and intensity (in candela). The lumens measure how much total light is being emitted, while the intensity measures how intense the light is in single spot. So you can have high lumens, but if they are spread over a large area, the intensity will be low. Or you can have low total output, but really focus it in a tight beam and still get high intensity.

Once you know the intensity at the front of the light, you can calsv9the maximum effective distance, since intensity decreases predictably with distance. The ANSI standard says you need at least 0.25 cd to illuminate an object. So to find the distance at which the intensity drops below this level, the equation works out to be SQRT(cd/0.25)


Got it thanks Delta Smile

I like flashlights!!

DB Custom
DB Custom's picture
Offline
Last seen: 9 hours 11 min ago
Joined: 01/13/2013 - 22:28
Posts: 18231
Location: Heart of Texas

FWIW, I got the SN6X-2X back in the group buy (several years ago) and with a simple lens change to an UCLp it gained 27Kcd. So while we want to think in terms of linear application, emitter/reflector dia/ lumens… the shape of the reflector and the quality of the lens can play a huge role and both are something we very rarely quantify. Wink

Dale

AntmanQ
Offline
Last seen: 3 months 2 weeks ago
Joined: 06/25/2018 - 08:36
Posts: 3

The picture you and your daughter holding the Mini GT is so cute. The flashlight just fits well and is right for her little hand. Now I want one!!! I like the design and style and I even think it’s better than the D1s.

JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas

DB Custom wrote:
FWIW, I got the SN6X-2X back in the group buy (several years ago) and with a simple lens change to an UCLp it gained 27Kcd. So while we want to think in terms of linear application, emitter/reflector dia/ lumens… the shape of the reflector and the quality of the lens can play a huge role and both are something we very rarely quantify. Wink

When I’m doing quick calculations/comparisons I do tend to give the manufacturers the benefit of the doubt as far as using high quality lenses and reflectors, etc… Competition can be fierce so they know they need to use good parts and try to be honest about the specs because the guys on this forum and CPF will test and verify these things.

For sure there is always the chance that a bad part can be used by mistake that really hurts performance and my guesses become wrong.

For Mikeadoo, I know he just wants a general comparison. Are they gonna look the same or will the GT Mini throw noticable further? Should he get it or just stick with his C8s?

I think it’s gonna be a nice boost in distance. Not double, but 39% assuming Lumintops numbers are accurate.

Edit:
Here is a review I found on the C8s.
http://budgetlightforum.com/node/40861
Flashlion measured 2.15A output instead of 2.8A which means it’s not 900 lumen. More like 600 to 650. He also only measured 35kcd. This is only 374 meters.

If Mikeadoo’s C8s is like this, then the GT Mini really will shine twice as far. It’s a huge difference.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

Mikeadoo
Offline
Last seen: 3 weeks 2 days ago
Joined: 02/12/2017 - 22:27
Posts: 344
Location: Chesterfield, Michigan

JasonWW wrote:
DB Custom wrote:
FWIW, I got the SN6X-2X back in the group buy (several years ago) and with a simple lens change to an UCLp it gained 27Kcd. So while we want to think in terms of linear application, emitter/reflector dia/ lumens… the shape of the reflector and the quality of the lens can play a huge role and both are something we very rarely quantify. Wink

When I’m doing quick calculations/comparisons I do tend to give the manufacturers the benefit of the doubt as far as using high quality lenses and reflectors, etc… Competition can be fierce so they know they need to use good parts and try to be honest about the specs because the guys on this forum and CPF will test and verify these things.

For sure there is always the chance that a bad part can be used by mistake that really hurts performance and my guesses become wrong.

For Mikeadoo, I know he just wants a general comparison. Are they gonna look the same or will the GT Mini throw noticable further? Should he get it or just stick with his C8s?

I think it’s gonna be a nice boost in distance. Not double, but 39% assuming Lumintops numbers are accurate.

Edit:
Here is a review I found on the C8s.
http://budgetlightforum.com/node/40861
Flashlion measured 2.15A output instead of 2.8A which means it’s not 900 lumen. More like 600 to 650. He also only measured 35kcd. This is only 374 meters.

If Mikeadoo’s C8s is like this, then the GT Mini really will shine twice as far. It’s a huge difference.


Thanks Jason! I don’t have the tools to do the measurements to see if my C8s is like that one, but I still want this mini GT.
Looks cool and I gifted a couple of my stock C8s to my family and neighbors.

I like flashlights!!

JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas

If you want to measure throw distances, all you need is a tape measure and a lux meter.

HS1010A or LX1330B are both good and cost from $10 to $30.

Here is a video on how to do it. It’s easy.

You can measure amp draws with a clamp meter like the UT210E for about $33. There might even be a coupon to get it a bit cheaper.

These are cheap, basic tools for measuring flashlights.

You can go one step higher with a Texas_Ace Lumen Tube for about $135. Then you can measure lumens. Not too many folks want to spend that much money, though.

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

mortuus
mortuus's picture
Offline
Last seen: 1 hour 30 min ago
Joined: 12/16/2014 - 09:33
Posts: 1042
Location: Sweden

JasonWW wrote:
Delta_V wrote:
Small correction – it will be about 1.4x the throw of a C8. The intensity is doubled, but there is a square root in the equation for throw, so you increase the throw by SQRT(2), or about 1.4.

If you want double the C8’s throw, you’ll need about 280,000 cd.


Mortuus meant twice the candela, not twice the throw.

i meant both Wink

...where Frugal meets with Flashlight!

DB Custom
DB Custom's picture
Offline
Last seen: 9 hours 11 min ago
Joined: 01/13/2013 - 22:28
Posts: 18231
Location: Heart of Texas

…want to have your cake and eat it too, yes? Wink

Dale

Jtm94
Offline
Last seen: 40 min 14 sec ago
Joined: 02/22/2017 - 05:08
Posts: 370
Location: Pennsylvania

Curious in how this goes. Can’t wait for numbers.

djozz
djozz's picture
Online
Last seen: 5 min 52 sec ago
Joined: 09/07/2012 - 17:04
Posts: 13268
Location: Amsterdam

Jtm94 wrote:
Curious in how this goes. Can’t wait for numbers.

If the light is well done (I expect a good reflector and focussing from Lumintop), the numbers are kind of predictable given the reflector size and led: 1200-1400 lm output, 120-140kcd throw.

link to djozz tests 

“I used to think that top environmental problems were biodiversity loss, ecosystem collapse and climate change. I thought that thirty years of good science could address these problems. I was wrong. The top environmental problems are selfishness, greed and apathy, and to deal with these we need a cultural and spiritual transformation. And we scientists don’t know how to do that.”   (Gus Speth)

Essexman
Offline
Last seen: 3 days 21 hours ago
Joined: 01/30/2011 - 18:18
Posts: 635
Location: UK
AntmanQ wrote:
The picture you and your daughter holding the Mini GT is so cute. The flashlight just fits well and is right for her little hand. Now I want one!!! I like the design and style and I even think it’s better than the D1s.

Due to EU regulations M4D M4X is not allowed to sell his daughter, you’ll have to manufacture your own.

Smile
DBSS
Offline
Last seen: 2 hours 19 min ago
Joined: 11/04/2014 - 23:20
Posts: 202
Location: Toronto

Count me in for 1, maybe 2.

MRsDNF
MRsDNF's picture
Offline
Last seen: 3 hours 57 min ago
Joined: 12/22/2011 - 21:18
Posts: 12376
Location: A light beam away from the missus in the land of Aus.
Essexman wrote:
AntmanQ wrote:
The picture you and your daughter holding the Mini GT is so cute. The flashlight just fits well and is right for her little hand. Now I want one!!! I like the design and style and I even think it’s better than the D1s.

Due to EU regulations M4D M4X is not allowed to sell his daughter, you’ll have to manufacture your own.

Smile
What, no black market there?

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

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

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.

 

JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas
DBSS wrote:
Count me in for 1, maybe 2.
This thread is for talking about the prototype.
JasonWW wrote:
The sign-up list is over here. http://budgetlightforum.com/node/60983

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

mortuus
mortuus's picture
Offline
Last seen: 1 hour 30 min ago
Joined: 12/16/2014 - 09:33
Posts: 1042
Location: Sweden
DB Custom wrote:
…want to have your cake and eat it too, yes? Wink

of course sir Smile

...where Frugal meets with Flashlight!

wstrachan
Offline
Last seen: 2 days 11 hours ago
Joined: 02/19/2016 - 02:30
Posts: 367

In for one CW

light addict....yeah I've got the bug.

Haikelite MT07S
Imalent DT70
Klarus XT12GT
Olight javelin mx3x
thrunite tn32 ut
acebeam k60
many, many others...

Man Without Shadow
Man Without Shadow's picture
Offline
Last seen: 6 hours 8 min ago
Joined: 02/20/2017 - 18:17
Posts: 293
Location: Wisconsin

I’m in!

When I'm spending money foolishly, I like to do it wisely...

I have all the flashlights I need, but not as many as I want...

 

MRsDNF
MRsDNF's picture
Offline
Last seen: 3 hours 57 min ago
Joined: 12/22/2011 - 21:18
Posts: 12376
Location: A light beam away from the missus in the land of Aus.

The sign up thread for this light is here.

http://budgetlightforum.com/node/60983

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

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

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.

 

ToyKeeper
ToyKeeper's picture
Offline
Last seen: 18 min 21 sec ago
Joined: 01/12/2013 - 14:40
Posts: 7858
Location: (469219) 2016 HO3
DB Custom wrote:
Um, well, um, Rey’s brass pineapple and at the moment a Nitecore TM16 are both sitting here in stock form. I don’t tend to modify a Sinner. If that helps. My S1A Baton in copper as well as my Jet-II Pro in copper are unmodified. And my Godmes T01. The Sunwayman F10R is still stock too. And my Dad’s Thrunite Titanium, the little twisty, it’s stock. As is my Titanium Olight S1 Baton with my name on it, from the X6/X5 group buy. And my number 62 X6/X5 set are still in the box, put away. Wink And of 200 lights that’s probably about it. Silly

That’s more than I’d expect. That’s about 5%. But I doubt there are many around here who can claim more than a 95% mod rate. Big Smile

I haven’t modded (but would like to):

  • Meteor (swap driver and optics)
  • Okluma DC2 Cu (swap driver and optic)
  • Rey brass pineapple (could use V2 driver and V2 reflector)
  • BLF-348 (should be ~8 lm instead of ~50 lm)

… and I don’t intend to mod:

  • SWM V11R
  • JB RRT01
  • L3 L10-219b
  • Zebralight H52Fw + SC52
  • Olight S-Mini Ti + S1-Mini Ti
  • Cooyoo Quantum SS
  • DQG Tiny AAA IV

I’m not counting anything I helped make, like the A6 or D4, or anything sitting in a box of old stuff I never use.

But I’d definitely mod the GT Mini, because if it can run Narsil it should be able to run Anduril. Same thing I did with the original GT. I doubt it needs any physical changes… just a new personality.

JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas
Mikeadoo wrote:
Interested!! Looks cool. How does it compare to a C8s though? Just curious Throw wise
Madmax compared them.
M4D M4X wrote:
JasonWW wrote:
M4D M4X wrote:
run to the hills….

How would you describe the GT Mini compared to a Thorfire C8s or Convoy C8? Surely the Mini must be much brighter, yes?


much more thrower due to the intense  spot


also more Lumens and bigger reflector


I’d say it’s C8++ class Big Smile

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

DB Custom
DB Custom's picture
Offline
Last seen: 9 hours 11 min ago
Joined: 01/13/2013 - 22:28
Posts: 18231
Location: Heart of Texas

The thing that makes that funny TK is the immense number of lights I have modified for a few friends. Big Smile The count is probably close to 300 of my own what with the ones I’ve sold or given away and nearing that many more for a few friends of mine. lol

It’s an obsession, now. VERY difficult to leave one stock. Like, I just got my D1s Titanium and the copper is so gorgeous, still in it’s bag and box, I WANT to play with it, but I kinda don’t want to mod it and playing with it will mean it’ll need Anduril and and and …

Dale

M4D M4X
M4D M4X's picture
Online
Last seen: 13 min 43 sec ago
Joined: 03/19/2014 - 05:17
Posts: 6428
Location: Austria (GMT + 1)

a bit comparison GT Mini vs. C8s

https://photos.app.goo.gl/53Mx2XtGKdgwgpTz9

find all available items in this list

i launched my new blog - all deals for members without MAP B$ Wink

find a short description about my idea here

 

if you want to buy a flashlight or battery for a better price: just send a mail - i will try to save you money!

Delta_V
Offline
Last seen: 7 hours 30 min ago
Joined: 09/21/2017 - 15:25
Posts: 207

Nice, that’s an intense hotspot.

Any chance of a comparison with a modern Convoy C8 w/ XP-L HI? The Thorfire is a nice enough light, hut it’s a little outdated as far as throwers go.

mortuus
mortuus's picture
Offline
Last seen: 1 hour 30 min ago
Joined: 12/16/2014 - 09:33
Posts: 1042
Location: Sweden

its clear that the gt mini has insane tight hotspot so it will beat any c8 or similar light in that size easy. not even an c8 with xpl hi emitter stand a chance.

...where Frugal meets with Flashlight!

Delta_V
Offline
Last seen: 7 hours 30 min ago
Joined: 09/21/2017 - 15:25
Posts: 207

Oh, I know it’ll beat it. It’s just a matter of how much, and how dramatic the visual difference is. A comparison with the D1S would probably be the best, but I’m not sure if M4DM4X has access to one.

DB Custom
DB Custom's picture
Offline
Last seen: 9 hours 11 min ago
Joined: 01/13/2013 - 22:28
Posts: 18231
Location: Heart of Texas

The difference in those pictures is easily the difference between XM-L2 and XP-L HI, given the same emitters and same or similar power levels there won’t be a lot of difference between the C8 and Mini GT in beam profile or throw, I’m thinking.

But the Mini GT is actually a shorter, more compact, light, albeit slightly larger in diameter, and the side switch set’s them apart quite nicely. It becomes more of a matter of style choice, the 3-legged dog that is the C8 or a nice neat style reference to the Throwmaster in the Mini GT’s big brother.

Is today a leather loafer day or a hiking boot day? Teva sandals or all out running shoes? Wink

Dale

M4D M4X
M4D M4X's picture
Online
Last seen: 13 min 43 sec ago
Joined: 03/19/2014 - 05:17
Posts: 6428
Location: Austria (GMT + 1)

unfortunaely i neither own a C8 with a HI LED nor a D1S


find all available items in this list

i launched my new blog - all deals for members without MAP B$ Wink

find a short description about my idea here

 

if you want to buy a flashlight or battery for a better price: just send a mail - i will try to save you money!

JasonWW
JasonWW's picture
Online
Last seen: 45 sec ago
Joined: 10/22/2016 - 11:41
Posts: 8282
Location: Houston Texas

M4D M4X wrote:

a bit comparison GT Mini vs. Thorfire C8s

https://photos.app.goo.gl/53Mx2XtGKdgwgpTz9


Nice, that is exactly what I was thinking given the GT Mini has twice the lumens, no dome and a slightly bigger reflector.

I have zero use for C8 style lights (small throwers) and did not sign up for the mini. Now I think I will. Let me head over to the sign up page.

If I found a host C8 with side switch and xpl-hi plus bought a driver from Lexel to get NarsilM I would be at $40+ I’m sure, then I would have to actually build the thing and it still wouldn’t look as cool as the GT Mini. Lol

My Convoy L6 thread with XHP70.2, Texas Avenger FET driver, Narsil v1.2 ramping firmware (old), lighted side switch and cut down SMO reflector. Lots of amp draws on stock driver as well. 

My Supfire L5-S thread with XHP70.2, 26350 cells (4,100 lumen!), Texas Avenger FET driver, NarsilM v1.0 ramping firmware and lighted side switch. My mini L6! 

9 NarsilM user videos for BLF Q8, GT, GT Mini and ROT66

Texas_Ace BLF Calibrated Lumen tube

Maukka Calibration Lights for DIY Lumen Measuring Devices 

Review Jaxmnve M1 Stainless 10180 Keychain light

Wieselflinkpro
Offline
Last seen: 1 hour 20 min ago
Joined: 05/21/2015 - 04:34
Posts: 717
Location: Germany - TLF

Can you make a comparison with a well driven C8? With BLF A6 driver or similar?

Pages