BLF GT Proto. Review. Work in progress. update 6.8.17. Post 69. Run time test added.

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Texas_Ace
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Rusty Joe wrote:
No regulation? I’m out. No longer interested. So sick of these hotrods with no stamina. If it’s not step-downs, it is no-regulation in the name of “wow” lumens for five minutes. I’m done. Sick of it. I have no lights I can buy anymore because of this lumen craze. I’m really done.

Where did you hear there is no regulation? It has a nice buck driver that regulates great. The only issue is voltage sag in the springs is causing it to drop out of regulation earlier then planned.

If you bypass the springs it will fix the problem and it will regulate down to around ~15V. Lower modes will regulate much longer.

It should still be able to regulate for around 40mins+ in the final version.

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johny723
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I am sure Lumintop will do something about the carriers. It is just too early to be put off by rather high voltage losses the prototypes have shown.

The Miller
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Rusty Joe wrote:
No regulation? I’m out. No longer interested. So sick of these hotrods with no stamina. If it’s not step-downs, it is no-regulation in the name of “wow” lumens for five minutes. I’m done. Sick of it. I have no lights I can buy anymore because of this lumen craze. I’m really done.

Argh this is not the GT thread, but given your strong sentiment I’ll treat this as if you had posted it there Wink
Rusty Joe
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The Miller wrote:
Rusty Joe wrote:
No regulation? I’m out. No longer interested. So sick of these hotrods with no stamina. If it’s not step-downs, it is no-regulation in the name of “wow” lumens for five minutes. I’m done. Sick of it. I have no lights I can buy anymore because of this lumen craze. I’m really done.

Yes you can see it needs improvements for longer regulated modes. At 2A already of is pretty nice.
I don’t think a long time on 2A is to be compared to 25K lumens lights stepping down to 1200lumens after a minute though Wink
The GT is not a hotrod going for max lumens in burst. The turbo of 2,5A gives max throw at the cost of losing regulation earlier (still we expect it to be longer after voltage losses are smaller and maybe a better bin led with little lower vf) but it has tons of throw on 2A with longer regulation.
Anyhow, will update the list later of course Wink

The difference is the same; each mode should do without crazy difficulty what it is claimed to do. I’ve already purchased the Brontelight BT31 instead.

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Rusty Joe
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The Miller wrote:
Rusty Joe wrote:
No regulation? I’m out. No longer interested. So sick of these hotrods with no stamina. If it’s not step-downs, it is no-regulation in the name of “wow” lumens for five minutes. I’m done. Sick of it. I have no lights I can buy anymore because of this lumen craze. I’m really done.
Argh this is not the GT thread, but given your strong sentiment I’ll treat this as if you had posted it there Wink

I actually couldn’t find that thread. Sorry.

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DavidEF
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Why create such drama about simply changing your mind? Why try to trash an excellent light? Just so that you don’t feel guilty for dropping out? Just simply drop out. Others will buy the light you didn’t want. No hard feelings needed. Wink

Reason is not automatic. Those who deny it cannot be conquered by it. Do not count on them. Leave them alone.
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Tom E
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The BT31 I avoided after considering it. No meaningful reviews, high cost, mediocre specs for what it is, only 1 BLFer posted they actually bought it, etc. Not sure why anyone would buy it over a TN42, but neither light is in the same class as the GT, not even close.

 

Jerommel
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What’s the point in a 2.5 Amperes Turbo mode when high is already 2 Amperes ?
The 25% increase from 2.0 to 2.5 Amperes will be visible on a lux meter, but hardly / not to the naked eye.

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Texas_Ace
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Jerommel wrote:
What’s the point in a 2.5 Amperes Turbo mode when high is already 2 Amperes ? The 25% increase from 2.0 to 2.5 Amperes will be visible on a lux meter, but hardly / not to the naked eye.

Which is why the ramp ends at 2A but turbo will be available at 2.5 for those that want it.

If guns cause crime, then pencils cause misspelled words.

In general, the art of government consists of taking as much money as possible from one party of the citizens to give to the other. -- Voltaire (1764)

Texas Avenger Driver Series

My LED Test series - XP-L2 V5  - Nichia 219C 90+ CRILatticebright "XM-L"XHP35 & PWM efficiency - XHP50 - XP-L V5 - XM-L2 U2 - XP-G3 S5  - XP-L HI V2 - Oslon Square & direct comparison to Djozz tests - Nichia 319A - Nichia 219B 9080 CRI - Nichia 219C D320 - Nichia 229AT

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MRsDNF
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This is a run time chart with the BLF GT proto Narsil running two amps at the end of ramping.
This particular GT also has spring bypasses on the battery carrier.
The runs were stopped when the low voltage kicked in for the first time.

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".

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MRsDNF
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This chart is a comparison running the BLF GT on high, the original Narsil at 2.5 amps and the proto Narsil at 2 amps. Both runs were with 30Q batteries.

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.

 

djozz
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Nice graphs, looks regulated to me for 40 minutes, so with the 8x carrier double that.

It is not clear to me what the difference is between ‘original Narsil’ and ‘proto Narsil’. Narsil is the user interface so are they different user interfaces?

MRsDNF
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The main difference was the original Narsil ramped to the maximum current output of the driver which was 2.5 amps at the LED. Prot Narsil used here ramps to 2 amps which is where this run time test was carried out. Double click takes you to 2.5 amps.
The surprise to me was the little difference there was running at 2.5 amps against 2 amps in light output and throw.

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.

 

The Miller
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Pretty neat, 30Qs do not have the highest mAh and it is with four where eight can be used too in the production lights.
I can’t see the runtime graph in the sole BT31 review but the text say it keeps the output above 50% indicating a decreasing output over time.

sb56637
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Lexel wrote:
Facepalm and they forgot the pocket clip

I want a keychain ring!

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JaredM
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sb56637 wrote:
I want a keychain ring!

+1. And how about a diffuser? Big Smile

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Huge kudos to all the folks here that are designing and testing these BLF creations. It’s so cool to see BLF being used as the medium to make these lights happen. The GT is looking absolutely formidable. And I’m also seriously impressed by Steve’s shots where the Q8 beer can floody light holds its own against some serious throwers simply by virtue of its sheer output. Incredible! Thumbs Up

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The Miller
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Heheh yeah SB, agree!

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Or a deep carry pocket clip Big Smile

nodoubt
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wish u had a tn42 to compare it to
then i would start loosing sleep Silly
hard to believe it will out throw this
cant wait to get this in my hand!

Mr.Scott
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nodoubt wrote:
wish u had a tn42 to compare it to then i would start loosing sleep Silly hard to believe it will out throw this cant wait to get this in my hand!

I like this photo!

R10500
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the more beamshots i see the more impatient i get about production date! haha when oh when…

The Miller
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Talking last changes
And a method of payment is agreed upon (for the PayPal users)
Each on the 555 first list gets a PM with Neal included.
Reply with email address
Lumintop will send invoice of $14 stating “BLF GT parts”
Pay within 5 days
no response to PM or payment made and we work our way further down the list

At a future moment a second invoice is send for $97 “flashlight parts” (or more if somebody wants cells)
no payment in five days, the $14 is given back minus the PayPal fees and we work our way down the list

People after the 555 get the same PM, and two invoices at a little later moment.

Based on actual payments LT knows exactly how many are needed for the groupbuy.

MortyDuck
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Do you know when can we expect this pm?

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The Miller
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Not yet
Dang I had opened this topic to read not post info belonging in the main thread, will copy paste it later Wink

MRsDNF
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The Miller wrote:
Not yet
Dang I had opened this topic to read not post info belonging in the main thread, will copy paste it later Wink

For those that dont know I’m in The Millers bad books. Silly

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.

 

The Miller
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MRsDNF wrote:
The Miller wrote:
Not yet
Dang I had opened this topic to read not post info belonging in the main thread, will copy paste it later Wink

For those that dont know I’m in The Millers bad books. Silly

Heheh aux contraire, mon ami Wink
MortyDuck
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heheheh Big Smile

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Franz
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The Miller wrote:
Talking last changes
And a method of payment is agreed upon (for the PayPal users)
Each on the 555 first list gets a PM with Neal included.
Reply with email address
Lumintop will send invoice of $14 stating “BLF GT parts”
Pay within 5 days
no response to PM or payment made and we work our way further down the list

At a future moment a second invoice is send for $97 “flashlight parts” (or more if somebody wants cells)
no payment in five days, the $14 is given back minus the PayPal fees and we work our way down the list

People after the 555 get the same PM, and two invoices at a little later moment.

Based on actual payments LT knows exactly how many are needed for the groupbuy.

So, the GT comes before than Q8? Shocked

Newlumen
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Yay. I am on #548… 548 to 555 are mostly from the CPF. We are lucky.

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