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:
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.
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?
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 am most certain that my driver/light is improved and tweaked from that first link you provided. That was 9 months ago and was for the Prototype, not the ones that he sold.
The second link is obviously for the BLF-GTvn and NOT my light.