Thrunite TN 42 ,a new record in Throw

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teacher
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seery wrote:
teacher wrote:

EDIT: Oh yeah.. what makes the UI better in the K70??? Please, educate me with some facts.

The ability to choose the desired output level BEFORE the light is turned on.


Thank you… that gives (would give) me something to make a decision about. Thumbs Up

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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Sledgestone
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Nah, I’m just sick and tired of people bashing stuff because of being biased.

teacher
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Sledgestone wrote:
Nah, I’m just sick and tired of people bashing stuff because of being biased.
+1
I agree……… Thumbs Up
And I would add to that, using vague innuendo mirroring personal opinions or preferences and not facts.

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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DB Custom
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I’ve discussed with friends here for some time how it’d be cool to actually go downrange and try to read something by the output of the flashlight at X range. Like, as I’ve posed, if a girl wrote her phone number on the inside of a matchbook cover could you read it with me shining the light from that range? So last night I had the wife assist me, we were on the phone with each other and organized the details between cars and such, and she could actually read by the light produced by the TN42 from a mile away. I turned it off and she was cast into darkness. Very noticeable difference in having the light on or off, she said. I had the light clamped onto my tripod, camera on top of the tripod, so it was stable and the target aim was repeatable.

But the situation there on our country road was not amicable toward me getting the shot with my camera. So, I scouted the area on Google Earth and found a new location. We went this afternoon and scouted the two sites in real time to make sure it was feasible. We’ll be shooting from across the lake, a mile between shores with zip between us. Tonight it might be raining, but this week for sure… new moon on Friday so each night from here out all week will be darker and darker. Last night was perfect because heavy storm clouds had all stars and moon blocked off. But it was very humid as well as other issues. I’m hoping that when this system moves out the air will be nice and clear and we’ll get the shots.

We plan to have 2 tripods, she’ll have my little Canon G1X with her to get a shot of the paper with text, as lit by the TN42 a mile away across the lake. I’ll have my Canon 7DMkII and EF 70-200mm f/2.8 L IS with the IS turned off for a more stable shot on the tripod. If all goes well, we’ll have the shot from both ends and definitively show a discernible text lit by an LED flashlight a mile away.

Wish us luck! Smile

Dale

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That sounds great…… good luck!!!!! Wink

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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DB Custom
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Hmmm, what if I could pull it off to have my wife shine a green laser at me across the lake, lining up the TN42 directly into that laser for spot-on accuracy? Smile

I need a guy to help me, my wife doesn’t care enough to get it this right…

Dale

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Wish I were somewhere even semi-close… I would be glad to volunteer for this mission………… Smile

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

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EasyB
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Cool, I think we all appreciate the work that goes into a beamshot like that.

I estimate that the TN42 hotspot is about 45 meters wide at 1 mile. Pretty amazing how narrow these thrower beams are.

DB Custom
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Astonishing to me that an LED can throw so far, especially a factory made light without modification. Someone has been paying attention, for sure!

I’m not sure there’s a “hot spot” left out at the mile mark. Remember that throw is calculated at having 1/4 lux at the maximum distance, or essentially the point where the lights output is equivalent to a full moon in brightness. So while it might indeed throw very far, it’s not like it’s still bright at that distance.

What I really like is how bright it is at 500-600 yards, or less. Sure, there are lights than put light out to 300-400 yds, even 500 or 600. But can you actually see the difference between a dog and a coyote under those beams? With this TN42, the sheer amount of power it still has at 500-600 yards makes it easy to identify cows in the herd, calves as compared to dogs or coyotes, or even if it’s a spotted skunk or one with two striped compared to one stripe. (we have 3 main kinds of skunks here.)

I can’t see a mile, but having this much power at half that far is very helpful! Smile

Dale

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Remember what rdrfronty and manxbuggy1 did? Big banner, then zoomed in, but they weren't that far apart, but they had a nice range with markers at different distances in one shot. here: http://budgetlightforum.com/node/25932#node-25932 and here: http://budgetlightforum.com/node/29808. I keep those bookmarked.

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I thought about calling them in on this. They’ve been planning on coming over for a while now, both have some new guns to shoot and I have a lot of new lights since the last time we hooked up. Smile Not sure if rdrfronty is still interested in the lights, but he’d be happy to help…. after he got his hands all beat up with the cannon’s he prefer’s these days! lol

Dale

will34
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Not sure about the amp draw on the TN42 but my K70 draws 2.6A from 4× 18650 in series, and the LED is being driven so hard there is noticeable tint shift in turbo vs high, about ~700k cooler and it gets hot quicker than the nitecore TM16GT with 4 emitters. I don’t expect that XHP35 to last very long like this…

Judging by the beamshots I would say the K70 has more lumens and brighter spill but less throw, although the 150kcd difference is hardly noticeable in the unzoomed pictures.

DB Custom
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I bypassed the springs in the carrier with 20ga Turnigy wires. It didn’t impact output any at all but should be making life a little easier on the cells… run time should be a bit longer. Still seing 702.5Kcd on the meter.

Question… I don’t want to spend a lot of time lining up the light for the one mile beamshot and have it start ramping down or anything (not sure how all that works on this light yet anyway) so what I’m thinking is to use the accessory clamp I have on my tripod to clamp the green laser, this will let me line up and true the stance of the tripod such that the clamp is pointing straight at our downrange target without even turning on the TN42. Removing the laser from the clamp and replacing it with the TN42 should still see direct linear output downrange. Does this make sense? Mind you, the green laser hot spot will be significant at one mile as well, most likely some 10’ in diameter at that range. I’ll be on the phone with my wife so she can help me line it up centered.

Here’s the clamp on my secondary tripod. This tripod will be downrange, I’ll be using a carbon fiber model capable of over 60 lbs weight attachment.

The clamp is an Impact (Impact is the name brand, Adorama.com) Double SuperClamp, model CC128, make to attach lighting and accessories to poles in photography. The set-up in this pic is how I normally take beamshots, Canon G1X at ISO1600 f/5.6 1/2 sec exposure with a 2 second timer and all manual focus settings.

Dale

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Only in the name of scientific research do we get to point lasers at our wives. Silly

(she’ll be wearing eye protection, of course, even at a mile away.)

Dale

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Good idea with the laser

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I’ve cleared it with the local police, plan to get this tonight. Y’all know how it is though, a guy can lay out all kinds of intricate plans and cover every base, but then the wife has a part to play and in the end it’ll be her getting the pictures that prove you can read by the light at one mile. My odds of getting the shot I want, even with both camera’s set up by me to begin with, are probably not as good as I would like them to be. She’ll have to remember to set up certain things on the camera that reset when the camera is turned off, so, I’ll be relying largely on her and she’s not as disposed in either camera’s or flashlights as I am to get it right. Lord help me… lol

Dale

Far Thrower
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How can you have a 1/2 second shutter speed and a 2 second timer at the same time?

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Dale,

At least you have a wife who is willing to help you with this experiment. Look at it the other way around, would you help decide which shoes she has to pick out 100 favorites. You also will be not very interested Smile

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Of course I’m interested in helping with her shoes. If I pick the ones she’s comfy in, we’re good at the end of the day. If she picks the one’s that hurt her feet but look good, the end of the day is a BEAR! Smile

The timer is a delay for the shutter to activate. Setting a delay allows vibrations to stop through the tripod chain to help ensure a clear exposure.

Dale

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Sorry, no the tripod doesn’t have a chain on it. The parts of the tripod, the legs, joints, ball head, all the components of the tripod that carry vibrations from a touch or movement, such as activating the shutter and then letting go of the camera. Wink

Dale

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Ok, tell me what y’all think… I used the Thrunite website and re-created their TN42 information pages to fit one sheet of typing paper, I’ll print this out and it will act as the target to be illuminated from one mile away….

Do y’all agree that this will suffice?

Dale

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Looks good. Thumbs Up

teacher
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DB Custom wrote:
Ok, tell me what y’all think… I used the Thrunite website and re-created their TN42 information pages to fit one sheet of typing paper, I’ll print this out and it will act as the target to be illuminated from one mile away….

Do y’all agree that this will suffice?


I like it!! Good idea and good luck.
You have a good ‘wifey’ if she is willing to help you in these matters and you don’t have to wear ear plugs. Thumbs UpBig Smile

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

       Texas Lumens Flashlights  <>   M4D M4X Deals : sign up - save $$$$    ||||   Confucius say -- Baaa-haaaaaa......   tongue-out

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blueb8llz
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This is very cool. While ur at it, why don’t you bring one or two more of your best throwers just so we can see if it’s possible to read with those lights?

DB Custom
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My L6 de-domed XP-G2 does 439Kcd (1325M throw), simply won’t reach a mile. The L2 with XHP-35 makes 332Kcd (1152M throw) , again, just not putting anything out there at a mile to see by.

Light travels in an exponential manner, it takes 4 times the light to travel twice the distance. Numbers get thrown around a lot in the forums, but achieving in excess of 600Kcd is just not easy. Wouldn’t surprise me if my 3 watt blue laser would’t reach a mile. Yet my 200mW green one easily does twice that, virtually all about the spectrum and the power it takes to push it.

Giving a quarter lux at a given distance, or the equivalent of a full moon, is difficult to read anything unless it’s in your hand. Looking back at a light source one can see the source from much further out than said source can lay down visible light. A reflector will light up far beyond where you can tell there’s light being made, for example, which is why people should remember to dim their high beams when driving… while the light being made doesn’t seem to reach far, it can cause the oncoming driver to lose night vision and quite possibly run into the one that failed to dim… just sayin. Everyone’s eyes are different of course, and while 90% of the folks here might call BS on what I just said, my daughter’s eyes are hypersensitive at night and she can be night blinded from quite a distance away. Many women suffer this phenomenon. My daughter says an oncoming cars lights pierce her eyes like needles, causing physical pain and making her look away. Obviously potentially dangerous.

My point here is this… tonight if my wife looks at the TN42 at a mile off her eyes won’t be able to see the paper illuminated as well as if she refuses to look at the light directly. At a mere 1/4 lux, the sheet of paper won’t be lit up brightly and will be difficult enough to get a good picture of. I’m planning on using my normal beamshot settings of ISO 1600 , f/5.6, 1/2 sec shutter. I haven’t done anything like this before so I’m not exactly sure what settings to use. I know if it were me on the target end with my main Canon camera I could use settings to make it look like daylight, but of course that’s not the point is it? Imitating what the eye is seeing, that’s the objective. So I’m fairly certain the first attempt will be bogus, would almost bet money my wife will somehow get the camera settings wrong. To that end, I’m debating switching ends with her, let her turn the flashlight on and point it at me, but that brings a whole new set of alignment issues into play.

This just isn’t as easy as it might would seem.

Granted, we are “only” a mile apart, across the lake. But the marina my wife will be at is in a small community, it’ll take some 10-15 minutes to drive between the two spots. The place I will be stationed is a pretty much abandoned loading ramp and dock, trashy, difficult to access, and with a less than desirable public that uses it more for drinking and what not than fishing or boat launching. So it’s got to be me at this site, my wife at the nicer marina. But there are some parking lot lights at the marina, she’ll have to traverse some rocky lakeshore area to get away from the lights, it’s gonna be somewhat tricky. All’s we can do is try, right? Wink (while watching out for critturs, both creepy crawly kind and vertical ones)

Dale

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Stepped it up, have 3 tripods now, one to hold the printed target sheet, one to hold the camera taking a picture of the sheet, and one to hold the light and my camera. I printed the sheet on 300gsm Museo Rag photo paper, it’s like cardboard. Wink

New moon on Friday, so tonight should just have a sliver of moon visible, we have almost zero wind, a storm system just cleared out yesterday so the air is clear, should be perfect conditions, the lake will be glassy smooth, gettting excited! Big Smile

I will go to her site first with her, set up the double tripods, explain what I’ll need her to check and maybe adjust on the little camera, then travel to the other side of the lake and begin the sequence.

Also, I have a honking big “20 Million Candela” spotlight, 12” lens, big 12V sealed lead acid battery, charging at the moment. I’ll give it a go, see if the Automotive H4 bulb can do a mile in that big reflector. I think I have a Phillips Silver Eagle or something like that bulb in it, supposed to be the more pure white higher output car headlight replacement bulb. (It’ll be pathetic, I know) Supposed to be 55W on high beam, it’s got low and high beam, just like in a car.

Now, if only my wife is up to it… fingers crossed, hunting for a rabbit to borrow a foot. Silly

Dale

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Got my fingers & toes crossed…… good luck! Thumbs Up

      You never know how a horse will pull until you hook him up to a heavy load. / Paul "Bear" Bryant ~/~\~ "Slow is Smooth, Smooth is Fast"

       Texas Lumens Flashlights  <>   M4D M4X Deals : sign up - save $$$$    ||||   Confucius say -- Baaa-haaaaaa......   tongue-out

         Rudeness Level /\ mΩ /\ {width:70%} /\ LightWiki /\ LED Tint Chart /\ LED Tint Picture /\ Xlamp size chart /\ BatteryU                   Flashaholic? Need Professional Help???   wink   /\ TheOriginal /\ TAB /\ LightSearch /\ BatterySearch /\ 14500's /\ DiCal                                                       

DB Custom
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(Thinking I might just have to take the 3 watt blue laser to shine across the lake and get a photo of that plasma looking beam over the water. Wink )

Dale

will34
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Looking forward to your test Dale, it’s crazy how stock lights are now surpassing modded lights.

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When we start hacking the status quo, engineers are forced to pick up their game. Wink

Dale

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