Wattage for the xhp35-HI might be double your 13W. So 26W sounds about right.
I calculated about 270-300 watts total.
I think we’re both in the same ballpark. If outside on a 70°F day with some wind it might be able to go continous full power without stepping down.
That’s not quite right, you can either parallel the fans for more flow or have them in series for more pressure, but not both. Great explanation otherwise :+1:
Based on the orientation of the three fans, I assumed the heat sink fins would be divided into 3 sections with one fan for each.
Imalent is shit
says stable 15k, so i wouldnt asume the 53000 is a very long runtime… i think the host must be alot bigger and beefy its just a rushed light to beat x70 on paper imo… and reading imalents past i would never buy a light from them for 600$ crazy… i prefer less lumens but a light built like a horse and good quality. time will tell.
Hold your horses my friend,are you sure about it? I,for example have one DX80 and it is 100% reliable after all.So calm down.
I don’t think so!
I agreed, been using almost everyday and never ever have any issue!
It cost around $650.00 the acebeam x70
It’s around 700$
$685.00
Welcome to BLF. 
I would rather have this for $600 and take my girlfriend out to lunch with the remaining $50!
That is just over 1Million CD @ turn on and .988Million Cd[988Kcd] @30 seconds. It is also very easy to carry when walking my Husky,no need to hire a Sherpa and pack of Huskies!
That is a completely different type of light. It’s low powered, long range and only lasts for 2, maybe 3 minutes. No one interested in the X70 would consider the TN42vn as an alternative. Sorry.
Your right,It is completely different. Your wrong that it[TN42vn 90] only lasts for 2 or 3 minutes! It maintains awesome out put for more than 30 minutes!
It is more like the Flood monsters can last only 2 or 3 minutes,I do not care what kind of fan you use.How long are you going to maintain 40K lumens? 30 seconds?
That TN42VN can run turbo 30 minutes and not overheat? Wow, I don’t think it could.
The X70 could possibly maintain its 40k lumen for 30+ minutes. It depends on the effectiveness of the cooling system.
If not 40k lumen, then 25k to 30k lumen continous is definitely a possibility.
It loses output though because of direct drive. So the power and heat are also reduced continously.
I should have been more descriptive.
I can run it for 15 straight minutes in 75F/23.8C to 80F/26.6C outdoor temps. then I put on Low for 2 or 3 minutes, then bump it back up. Once the fall and winter comes I will be able to use it 30M straight w/ no problem.The light has 3 modes. L-M-H. Low is equivalent to the U21vn[~1600L/260Kcd],that is by eye!
V54 said the driver he and Richard used has thermal step down and is set very high and is located inside the head of the light. I do not know how all this electronic stuff works. I can tell you, from a visual stand point I can not tell any difference from turn on to putting on Low after 15 minutes. I also can not notice any reduction in output once the light has accumulated 25 or 30 minutes of max output. 
It is very costly. I sold my TK75vn Quad to my Buddy and now I am selling my TK61vn V4[Not many made] to my same buddy. For people who love throw[I know this is not the thread] and very impressive lumens, this light w/ the CFT-90 is unbelievable.
Finally, I compared my TK61vn V4[1800L/750Kcd] with it on the trail last night for about 5 seconds. That is when I decided to sell V4! The TN42 blew it away, as it should.TN42vn 90 has 3X the lumens and ~540Y/493M more throw and at least double the size hot spot!
The only advantage V4 has it a little more run time and it NEVER gets hot,I have run it 45 minutes on turbo in the summer!
I didn’t think the TN42VN used direct drive. Does it? I though Richard built a special buck driver for it.
It’s not direct driven
TN42vn90 with RMM driver… http://www.candlepowerforums.com/vb/showthread.php?442055-TN42vn90
Richard’s RMM Buck Boost driver http://www.candlepowerforums.com/vb/showthread.php?449728-BLF-GTvn-V2-2Mcd-Throw-King-(August-2018)