Thrunite TN31 drops from 1147 lumens to 809 under its temperature controller and do not use CR123s in TN30 & TN31.

[Sparkymarky1954]

@scaru

Yep, the same reason I came here. :)

Do you know why DX and Dino get bad comments?

It seems many CPFers are becoming BLFers!

[scaru]

The problem with DX and Dino is slow shipping and unreliable customer service. An example of this is one time a member here received a lip phone instead of a flashlight. I have had a DX order take 5 months.

[Sparkymarky1954]

@scaru

The problem with DX and Dino is slow shipping and unreliable customer service. An example of this is one time a member here received a lip phone instead of a flashlight. I have had a DX order take 5 months.

Thanks for the tip.

I usually use Amazon.com or Ebay or Light Junction or one of the bigger vendors.

Amazon just sent me a new order after the shipping company lost my parcel in transit for free as a replacement and then my original order turned up at my house a few days later, so I had two of what I originally ordered. Good customer service!! And Amazon said I could keep both!!

[kramer5150]

@Sparkymarky1954

@Pok

" Output on Level 6 stabilizes at the 15-minute mark (809 lumens) and maintains around 86% (695 lumens) for most the run time. "

???

This TN31 running at 695 lumens seems rather low when this light is advertised as being an 1147 lumen flashlight.

Isn't level 6 the top output level?

I won't buy it now I have seen these figures.

Thermal dimming is nothing new, high current LED lights have been doing this since day-1. How much each light dims varies widely, and there really is no set rule. Its also not uncommon for manufacturers to advertise their brightest lumen output... IE best case scenario.

FWIW I won't be adding this light to my collection either... its just too big for all practical purposes, and IMHO it costs too much for what it does.

A drop from 1147 to 690 is pretty huge though. Factoring in reflector and lens losses, that XML needs to be pushing ~1300 bulb lumens upon initial turn on. Theyre definitely driving it!

[Rusty_Joe]

Welcome, Sparky...

So I guess this answers the question for me (which I asked a few weeks ago and got no answer to)--as to why the 800 lumen M31 Triton with SST-50 is supposed to have a 700 meter throwing distance while the TN31 has the same figure with 1100+ lumens. Doesn't make sense--unless output drops drastically as the article states.

I have said before that I think integrity and reliably with estimations on performance stats have a long way to go for so many companies (with budget and name-brand lights and among their fans).

[rikr]

@Sparkymarky1954

@Pok

" Output on Level 6 stabilizes at the 15-minute mark (809 lumens) and maintains around 86% (695 lumens) for most the run time. "

???

This TN31 running at 695 lumens seems rather low when this light is advertised as being an 1147 lumen flashlight.

Isn't level 6 the top output level?

I won't buy it now I have seen these figures.

I sure am glad this came out before I pulled the trigger. Thank you!!!

[luvlites]

@Pok

" Output on Level 6 stabilizes at the 15-minute mark (809 lumens) and maintains around 86% (695 lumens) for most the run time. "

???

There's either something wrong with his light or his testing because two comments down from that he said the max he ever got from it is 809 lumens. I have one of these and mine is at least 1100 lumens. And it kicks the crap out of everything else I have -- no contest.

Ultrafire HD2010 vs Thrunite TN31

I've always wanted a compact thrower and really like my Ultrafire HD2010. So when the Thrunite TN31 came out my first reaction was, how much better can it be for 6X the price? Sure, it has a larger and deeper reflector and uses an XM-L U2 emitter instead of an XM-L T6. But how much more throw will that give it? What if I spend all that money and it's not much better than my $35 HD2010? That was my thinking and initially decided against it... until I saw HKJ's beam shots. Bought mine from…

[Tecmo]

We need more beamshots!

[kramer5150]

So if it gets 73400Lux from 809 Lumens, then by the time it drops to 695 Lumens the corresponding Lux will have dropped to 63,056Lux (Assuming its a linear correlation).

Thats not that much brighter than an STL-V2, Fandy-V6 or modded HD2010... which all can push the 45-50K range, at a fraction of the price and ~half the size size.

[fishinfool]

Aloha and welcome to BLF Sparkymarky1954!

[luvlites]

@kramer5150

So if it gets 73400Lux from 809 Lumens, then by the time it drops to 695 Lumens the corresponding Lux will have dropped to 63,056Lux (Assuming its a linear correlation).

Thats not that much brighter than an STL-V2, Fandy-V6 or modded HD2010... which all can push the 45-50K range, at a fraction of the price and ~half the size size.

It's definitely not 809 lumens. His light is defective or his testing is wrong. Trust me, I own one of these. BTW it puts out 3X the lux of an HD2010 which I also have and have tested it against.

@kramer5150

A drop from 1147 to 690 is pretty huge though. Factoring in reflector and lens losses, that XML needs to be pushing ~1300 bulb lumens upon initial turn on. Theyre definitely driving it!

The reviewer claims he never got more than 809 lumens to begin with.

[turboBB]

@OP - selfbuilt has addressed this on your original thread over on the other forum. No huge dip even without a fan.

I believe that potentially the reviewer may have received a poor unit or one with high vF. In which case, anecdotal evidences suggest that differences in vF can cause a 40% differences in output with all else being equal.

I don't have time to conduct a run now as I'm wrapping something else up but will post my results in the future.

Cheers,
Tim

[my9221]

@Sparkymarky1954

I have seen warnings on CPF about DX and Dino, but what is the main bad points that BLFers have found?

Welcome to BLF. Please do some home works for DX & DD on BLF. You'll find plenty of interesting forums regarding these Chinese supplies!

[luvlites]

@Tecmo

We need more beamshots!

Selfbuilt's got some decent beamshots in his TN31 review on "the other site" and compares it to beamshots of the TN30, Catapult V3, Crelant 7G5V2 and Olight SR90.

I'll do some longer distance shots than his when I have time and will compare to the HD2010, Ultrafire Uf-T70, etc.

[antonkochubey]

As I can see by the purple line, there's only 1 step-down at 2-3 minute mark, after all it's basically a straight line.

[Rusty_Joe]

@luvlites

@kramer5150

So if it gets 73400Lux from 809 Lumens, then by the time it drops to 695 Lumens the corresponding Lux will have dropped to 63,056Lux (Assuming its a linear correlation).

Thats not that much brighter than an STL-V2, Fandy-V6 or modded HD2010... which all can push the 45-50K range, at a fraction of the price and ~half the size size.

It's definitely not 809 lumens. His light is defective or his testing is wrong. Trust me, I own one of these. BTW it puts out 3X the lux of an HD2010 which I also have and have tested it against.

Holy crap! That's all I gotta say!

[Hikelite]

If you look at HKJ's review you can see two step downs. Bu it looks like the second drop is only down by 14% of the initial output, keeping constant approx 986 lumens, considering that HKJ estimates the same brightness as the manufacturer.

[kramer5150]

@luvlites

@kramer5150

So if it gets 73400Lux from 809 Lumens, then by the time it drops to 695 Lumens the corresponding Lux will have dropped to 63,056Lux (Assuming its a linear correlation).

Thats not that much brighter than an STL-V2, Fandy-V6 or modded HD2010... which all can push the 45-50K range, at a fraction of the price and ~half the size size.

It's definitely not 809 lumens. His light is defective or his testing is wrong. Trust me, I own one of these. BTW it puts out 3X the lux of an HD2010 which I also have and have tested it against.

Yeah thats more along the lines of what I was expecting for a reflector that big.

[Woody]

So probably best not to bid for this specific light on eBay (all the lights sent to Light-Review seem to end up on there). Not that cheap either.

[raccoon]

Welcome to the best damn light forum period, Sparkymarky1954!