[PART 1] Official BLF GT Group Buy thread. Group buy officially closed! Lights shipping.

19107 posts / 0 new
Last post
mdeni
mdeni's picture
Offline
Last seen: 4 days 17 hours ago
Joined: 08/06/2016 - 05:17
Posts: 271
Location: Europe

DB Custom wrote:
I know there’s a lot of talk going on about cell tube length and number of cells utilized, it might be prudent to again point out that the XHP-35 is a 12V emitter, as such, running a Buck driver from 4 cells is a lot cheaper than a Boost driver from 2 cells. Direct drive from an FET is really not much of an option as the XHP-35 has a max current of about 3A, which is really pushing it, best is around 2.5A or so or even less.

Essentially it’s going to take 4 cells in series, can run longer on a parallel set of 4 (8 total) of course. The very nature of the 12V emitter disallows substituting a lot of other emitters, it’s going to take a driver swap most likely to use a different emitter. It’s just really difficult and cost prohibitive to design a light to do all things, this one began as an extreme distance thrower, that’s the objective, and tweaking it with other component options will probably get expensive. (as usual)

While the look of a single 4 cell tube (1 cell in length) might be cool to some, it’s impractical in use. The TM36 Lite was like this, big head, only enough tube to grab onto. Had to put a handle on it to make it worthy of a 600 yd walk. So if the single cell length tube is really in demand, possibly an add on handle to enable carrying? Possibly have the tube sized to accept the Nitecore handle that fits the TM series? Just a thought… (by the way, this handle alone is a $36 accessory)


It gets ESPECIALLY cheap for 4 cells because the amperes drained will be very low. That means that laptop pulls, or other low quality cells will provide the same output performance as the most expensive Sony/Samsung. That is very important with this kind of battery guzzlers. That brings the price of the light right down, and brings the battery cost down close to 0$. Which is a good thing.
Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas
mdeni wrote:
It gets ESPECIALLY cheap for 4 cells because the amperes drained will be very low. That means that laptop pulls, or other low quality cells will provide the same output performance as the most expensive Sony/Samsung. That is very important with this kind of battery guzzlers. That brings the price of the light right down, and brings the battery cost down close to 0$. Which is a good thing.

Correct, with all 8 cells each cell would only need to prove about 1.5A max, so basically any cell will handle it just fine. Although obviously runtime will not be as good.

teacher
teacher's picture
Offline
Last seen: 2 years 1 month ago
Joined: 02/23/2016 - 19:04
Posts: 9596
Location: NE & SW Alabama

I have been watching this one from the outset and like what I see.

The OP says this:
A new project
Aim:
BIG thrower that surpasses the latest super throwers like the TN42

I say IF that is what the intent was and still is… then let’s make it a good one. Wink

Don’t worry about “bells & whistles”. Use whatever ‘parts’ (driver, LED, Reflector) are needed to make it exactly what the stated aim is.
BIG thrower that surpasses the latest super throwers like the TN42”

Most likely that will narrow the choices drastically of what LED & Driver to use.

In other words, ‘form’ should follow ‘function’ on this one.

My .o2, ymmv. Thumbs Up
Smile

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 

 

                                             

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas

Sadly it is not always so simple lol. For example with the LED, the XP-L Will technically throw further but be less useful everywhere else.

With the battery tube, going with fixed cells like the Q8 would work but drastically limit modding ability due to not being able to use 3V LED’s, which would throw further for those that wanted to do that. Although honestly with the cell setup, besides the ability to run 3V LED’s it is really more about cosmetics and flexibility.

Going with a solid tube with no carriers would save a little cost, it really depends on how close the pricing is on weather the savings is worth it.

mdeni
mdeni's picture
Offline
Last seen: 4 days 17 hours ago
Joined: 08/06/2016 - 05:17
Posts: 271
Location: Europe

Teacher you forget the price. It can’t be astronomical like the TN42 which is the main problem of that flashlight.

G0OSE
G0OSE's picture
Offline
Last seen: 9 hours 2 min ago
Joined: 09/03/2014 - 12:34
Posts: 2278
Location: UK SW

Texas_Ace wrote:
If people wanted to give up the ability to run XP-L or XP-G2’s we could give up the battery carriers as well. The only way to use those LED’s without battery carriers is with a buck driver, which would cost 40% of the total light cost.

I think we are over complicating this light. Mostly with exactly what you have just said – using 2 types of led (being able to). I for one don’t and won’t.
Ok, a quick look at the results of the poll so far, it would seem to me that virtually no one wants ‘One particular LED’ anyway, in fact it’s such a small percentage that it surely cannot even warrant ANY say in the manufacture of this light – the extra machining, time, planning, etc etc of being able to fit a different led that –
1. no one seems to want anyway
2. that many of the buyers will never fit
seems to be a big waste of funds and time.
Basically from what I can see, it’s causing over complication of the whole thing for no real valid reason, other that a few of the buyers may change the led to the other type (but likely it will go back to the other anyway) – that is if the poll is to be believed.
My personal opinion would be to concentrate on the chosen emitter (when voting ends) and design the light soley around that. No moving head parts/locks etc.
The old adage – ‘Jack of all trades, master of none’

I’m sure people have their own opinions – but this is mine, sorry if it upsets anyone in advance Thumbs Up

The Miller
The Miller's picture
Offline
Last seen: 1 year 9 months ago
Joined: 12/14/2015 - 12:08
Posts: 9908
Location: Charente France

carriers offer security, one sees the cell placed correctly and then puts the whole carrier in the tube.
Also when using 4 cells, all the cell weight can be put away from head.
that a carrier could be modded is nice but not the main reason i think

sb56637
sb56637's picture
Offline
Last seen: 14 hours 25 min ago
Joined: 01/08/2010 - 09:29
Posts: 7066
Location: The Light

Alright, alright, those renderings convinced me. Cool Sign me up Scotty!

Budget Light Forum ...where Frugal meets with Flashlight!

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas

No one upset here. It is a legitimate opinion.

I guess it is easier to convert down to 1S then up to 2S. All they would need is 4 dummy cells to convert. They would not be able to run 8 cells with an XP-L.

The conversion would actually not be as bad as I was thinking (used to the SRK that is a pain to convert to 2s or 4s).

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas
sb56637 wrote:
Alright, alright, those renderings convinced me. Cool Sign me up Scotty!

Yay, we hooked the big man himself, we must be doing something right! lol.

sb56637
sb56637's picture
Offline
Last seen: 14 hours 25 min ago
Joined: 01/08/2010 - 09:29
Posts: 7066
Location: The Light
Texas_Ace wrote:
sb56637 wrote:
Alright, alright, those renderings convinced me. Cool Sign me up Scotty!

Yay, we hooked the big man himself, we must be doing something right! lol.

Never mistake my silence for indifference! Big Smile I’ve been lurking on this thread since day 1.

Budget Light Forum ...where Frugal meets with Flashlight!

Caleb
Caleb's picture
Offline
Last seen: 13 hours 21 min ago
Joined: 03/13/2016 - 01:28
Posts: 736

Is there a way to design in some kind of safety mechanism to reduce the risk?

The Miller
The Miller's picture
Offline
Last seen: 1 year 9 months ago
Joined: 12/14/2015 - 12:08
Posts: 9908
Location: Charente France
sb56637 wrote:
Texas_Ace wrote:
sb56637 wrote:
Alright, alright, those renderings convinced me. Cool Sign me up Scotty!

Yay, we hooked the big man himself, we must be doing something right! lol.

Never mistake my silence for indifference! Big Smile I’ve been lurking on this thread since day 1.


Big Smile Thumbs Up
Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas
Caleb wrote:
Is there a way to design in some kind of safety mechanism to reduce the risk?

Risk of what exactly? risk of someone being stupid?

Sadly Stupidity is an incurable disease that plages millions around the planet ever since natural selection’s cycle was interrupted in the last hundred years or so. It is destined to get worse.

Anyone here ever seen that documentary “idiocracy?

In all seriousness, it should not be an issue but the PCB’s we will have in the carriers would have the ability to use fuses if it was deemed necessary.

NikolaS
NikolaS's picture
Offline
Last seen: 5 months 2 weeks ago
Joined: 02/07/2014 - 13:26
Posts: 1272
Location: intersection of all roads
Quote:
I’ve been lurking on this thread since day 1

Me too, sign me up !

CheapThrills
CheapThrills's picture
Offline
Last seen: 10 hours 13 min ago
Joined: 07/02/2011 - 10:45
Posts: 3650
Location: Suomi

Sign me in for this! Steve

TheOnlyDocc
TheOnlyDocc's picture
Offline
Last seen: 10 months 1 week ago
Joined: 06/26/2015 - 05:17
Posts: 949
Location: Mönchengladbach /Germany

I am interested in one depending on the final specs and price.
Really appreciate the effort to beat a TN42 for ~100$. But i have a few concerns.
First the modability (thermal design). The actual design should be capable of running a 20W LED on 100% for quite some time without getting to hot.
But without improving the thermal design (E.g. additional smaller and longer fins to increase the surface area at the base) switching to a more powerfull LED (in the future) will be a problem!
And i think because we are here at BLF, modding the light is not something that only 1 or 2 people will do! Imagine a year from now there might be a LED on the market that puts out 2500-3000 lumen with a die size of an XP-L. I know what i would want to do then. Or maybe there is a high power LED like the XHP70 with 6000lumen but it is one die Like a SBT-70 or MTG-2.
I am definitly interested in this light! But if future modding is not possible or only possible if you put a disproportionate amount of money and work into it to make it work i might better keep searching for a different light.
And it is the same with the cell setup. If modding the setup is not possible or only with a excessive amount of work (near a rebuild) i keep searching for something else.
Still hope that the final product is capable of handling at least 50W+ (it does not have to be like a TM36 even if this would definitely solve any heat problem) and is mod friendly.

New WildTrail (former LuckySun) D80v2 Sale has Started http://budgetlightforum.com/node/66255

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas

The head of this light would weigh over 1.5lb, needless to say it can absorb and dissipate a LOT of heat.

the issue with adding more fins is it would add even more weight.

Enderman
Enderman's picture
Offline
Last seen: 53 min ago
Joined: 11/03/2016 - 22:42
Posts: 4278
Location: Vancouver, Canada

You need a CPU heatsink and an active cooling fan if you plan to run an XHP70 at 6000lm, unless you’re comfortable with your LED going over 85 or 100C and having reduced output.

johny723
Offline
Last seen: 9 hours 32 min ago
Joined: 06/08/2014 - 08:48
Posts: 391
Location: slovakia

Yes, a user-friendly design is crucial. I have another question. Will there be enough room in the driver cavity for an optional driver change? I dont need much, just hope it will not be designed like the Palight Boss1 with 9mm of vertical space in the driver cavity.

Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas
johny723 wrote:
Yes, a user-friendly design is crucial. I have another question. Will there be enough room in the driver cavity for an optional driver change? I dont need much, just hope it will not be designed like the Palight Boss1 with 9mm of vertical space in the driver cavity.

It will have some extra space, I think I asked for 15mm for the first render, it will be adjusted before production I am sure though.

Enderman
Enderman's picture
Offline
Last seen: 53 min ago
Joined: 11/03/2016 - 22:42
Posts: 4278
Location: Vancouver, Canada

Texas_Ace wrote:

It will have some extra space, I think I asked for 15mm for the first render, it will be adjusted before production I am sure though.

Just give it an extra 100 or 200mm in there so we can store a sandwich and drink too!
Texas_Ace
Texas_Ace's picture
Offline
Last seen: 7 hours 35 min ago
Joined: 03/24/2016 - 07:44
Posts: 9353
Location: Everything is brighter in Texas
Enderman wrote:
Texas_Ace wrote:
It will have some extra space, I think I asked for 15mm for the first render, it will be adjusted before production I am sure though.
Just give it an extra 100 or 200mm in there so we can store a sandwich and drink too!

Could do that and basically create a modern maglight so cops everywhere can carry a big stick and not get sued lol.

Enderman
Enderman's picture
Offline
Last seen: 53 min ago
Joined: 11/03/2016 - 22:42
Posts: 4278
Location: Vancouver, Canada

Haha I still have a 4D maglite sitting around somewhere from back when I thought those were “high power” flashlights….
Because 4D must be brighter than 3D cells, right? xD

Abqjohnny
Offline
Last seen: 2 years 4 months ago
Joined: 08/29/2013 - 23:06
Posts: 313
Location: Fruitland, USA

Sign me up also depending on final price

mrheosuper
Offline
Last seen: 2 months 2 weeks ago
Joined: 09/30/2016 - 12:44
Posts: 1515
Location: Ho Chi Minh City, Vietnam

why we keep using 18650 at this size?, 4s 26550 would be better in my opinion

Forgot my pen

Enderman
Enderman's picture
Offline
Last seen: 53 min ago
Joined: 11/03/2016 - 22:42
Posts: 4278
Location: Vancouver, Canada

mrheosuper wrote:
why we keep using 18650 at this size?, 4s 26550 would be better in my opinion

It was mentioned earlier, people want to be able to hold the thing.
26650s would require a handle to hold it, and at that point they may as well do the box design they originally had in the vote.
More people voted for this style of light, so that’s what they’re going with.
Also, more people own 18650s.
J-Dub74
J-Dub74's picture
Offline
Last seen: 4 months 3 weeks ago
Joined: 03/14/2015 - 17:17
Posts: 2231
Location: Michigan

Enderman wrote:
mrheosuper wrote:
why we keep using 18650 at this size?, 4s 26550 would be better in my opinion

It was mentioned earlier, people want to be able to hold the thing.
26650s would require a handle to hold it, and at that point they may as well do the box design they originally had in the vote.
More people voted for this style of light, so that’s what they’re going with.
Also, more people own 18650s.

I was the one that brought that up earlier. I meant to jump back in and clarify that I meant 4 26650 inline like the L6 but nearly double the length, not a 4-26650 side-by-side box. The box design doesn’t appeal to me either but if the 4 cells were in a nice straight line it would be about the length of a 4 cell Mag but WAAAY cooler.
Enderman
Enderman's picture
Offline
Last seen: 53 min ago
Joined: 11/03/2016 - 22:42
Posts: 4278
Location: Vancouver, Canada

Interesting idea.
Tube would be much thinner and runtime would be shorter tho.

JockRobbins
JockRobbins's picture
Offline
Last seen: 4 years 9 months ago
Joined: 11/05/2016 - 22:10
Posts: 246
Location: The slightly cooler end of a high powered torch

There is a solution to use 26650s, but that would mean 4 in series, in a bored-out thick long battery tube, and from what I understand that’s not wanted by the development team, and really that’s who’s calling the shots in the end. So like I’ve mentioned before this light +will not suit everyone + . If you don’t think it is for you look elsewhere. There is literally no one single light to suit the 100th percentile of users, this one is not that magic bullet either.
It will be a specialised long throw beast. Not your EDC that Jim, Jill and John will want for late-night fridge raids.
Members new and old in a sense insulting some aspects of this light should be thankful they’ve been allowed to view it’s progression in the R&D stages. And also have their opinions on it heard.

Today’s 2cents.

Edit – that first sentence or 2 was being typed the same time as other members. Sorry for repeating your words (-:

Pages

Topic locked