Sky Lumen        
Page 2 of 3 FirstFirst 123 LastLast
Results 31 to 60 of 67

Thread: New and upgraded Fraz Mechanical Smart Materials flashlights

  1. #31
    usdiver's Avatar
    Join Date
    Feb 2004
    Location
    In the Sticks
    Posts
    1,793

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by borealis View Post
    Sooo... with no chips is this the only variable output flashlight that could survive an EMP?
    I do know of one other that will survive an emp attack
    Donít Tread On Me

  2. #32
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by borealis View Post
    Sooo... with no chips is this the only variable output flashlight that could survive an EMP?
    Quote Originally Posted by usdiver View Post
    I do know of one other that will survive an emp attack
    This is one test I've always wanted to try. In theory it should as the body should act as a Faraday cage and the light has no PCB to fry. Where it could get interesting for any light including the hardened ones is if it were unlucky enough to take a shot from an EMP or huge sun flare with the lens facing the source. I'd like to know how the actual LED would hold up. But yes, I would think it would hold up in 99% of cases as long as you don't go around with the emitter facing the sky all the time.

    -Fraz

  3. #33
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Well guys, I have the Lumenite in hand; this is a pretty nifty little light Fraz has built for us! I didnít realize that I had the first one out in the wild, as I thought there might have been a few other Prototypes floating around. But I think you guys will be very pleased. I like the natural/clearcoat type anodizing very much. The machined flutes on the body are clean and simple but effective. I think that the finish is very good for the fact that these were more or less finished by hand in the shop. I have had the opportunity to use one of the older black 26650 lights that my buddy has. I liked that one, but this one is even better. I definitely think that the improved light engine allows for a much cleaner and more predictable ramping sequence than what was possible with the previous design, especially at low outputs. Iíd be keen to grab one of the 18350 models when theyíre available. It sounds like Fraz is building some more lights, but in the meantime while you guys wait if you have any specific questions from a user perspective I will do my best to answer.

  4. #34
    Flashaholic* Glenn7's Avatar
    Join Date
    Jul 2006
    Location
    Tasmania, Australia (the butt end of oz)
    Posts
    1,546

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    It seems that standard 26350 batteries don't have protection, that could be a problem running down the battery too low and killing it - I see Imalent do a protected 26350, it's a bit longer tho I wonder if they fit, also with 18650/18350 batteries in the other models.
    But seems funny that you put electronics back into a non electronics light.

  5. #35
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by Glenn7 View Post
    It seems that standard 26350 batteries don't have protection, that could be a problem running down the battery too low and killing it - I see Imalent do a protected 26350, it's a bit longer tho I wonder if they fit, also with 18650/18350 batteries in the other models.
    But seems funny that you put electronics back into a non electronics light.
    That is correct, there is no overdischarge protection in the light itself - and also correct that I avoided it to keep any extra electronics out of the design. So I do recommend using a protected cell or a cell with chemistry that allows safe low discharge levels (like the green 26650 used in my last light). A lot of the newer cells can handle voltages as low as 2v.

    That being said, I've discharged all my li-ion cells (for the various sized lights) down to where the lights stop functioning. The battery usually stops draining at the 2.3-2.6v point which hasn't damaged any of the cells I've used.

    -Fraz

  6. #36
    Flashaholic* KITROBASKIN's Avatar
    Join Date
    Mar 2013
    Location
    New Mexico, USA
    Posts
    3,040

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by usdiver View Post
    I do know of one other that will survive an emp attack
    Is that a demonstrated claim or forum talk? Are the first three letters of the flashlight brand HDS?

  7. #37
    peter yetman's Avatar
    Join Date
    Mar 2014
    Location
    North Norfolk UK
    Posts
    4,276

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Hi Kit.
    If it is an HDS that Steve's on about, Henry himself said it will survive.
    But if it happens, I think we may have more to worry about....
    P
    Peter's shopping list:- HDS / Oveready 170N Exec/LE and an Oveready V4 Nichia Drop In. Otherwise I'm content. Want want want, that's me.

  8. #38
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by peter yetman View Post
    Hi Kit.
    If it is an HDS that Steve's on about, Henry himself said it will survive.
    But if it happens, I think we may have more to worry about....
    P
    Very much concur

  9. #39
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by nbp View Post
    Well guys, I have the Lumenite in hand; this is a pretty nifty little light Fraz has built for us! I didnít realize that I had the first one out in the wild, as I thought there might have been a few other Prototypes floating around. But I think you guys will be very pleased. I like the natural/clearcoat type anodizing very much. The machined flutes on the body are clean and simple but effective. I think that the finish is very good for the fact that these were more or less finished by hand in the shop. I have had the opportunity to use one of the older black 26650 lights that my buddy has. I liked that one, but this one is even better. I definitely think that the improved light engine allows for a much cleaner and more predictable ramping sequence than what was possible with the previous design, especially at low outputs. Iíd be keen to grab one of the 18350 models when theyíre available. It sounds like Fraz is building some more lights, but in the meantime while you guys wait if you have any specific questions from a user perspective I will do my best to answer.
    Glad you got the light! Please let me know any comments you may have about the design, likes/dislikes etc. I'll be going back in next week to machine some more of these and I try to change the design a bit for the better every time I go in.

    Thanks,
    Fraz

  10. #40
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Is there an o-ring seal under the front window on this light? I canít quite tell by looking.

  11. #41
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by nbp View Post
    Is there an o-ring seal under the front window on this light? I canít quite tell by looking.
    Yes, and one of the trickier parts is getting the right seals on the various optics. That is why currently I don't recommend going below bathtub level or so submersion until I can test them in a lake. Although all these early lights will certainly be fine dropping them in a creek or in a heavy storm or whatever. My ultimate goal is 50 feet.

    The o-ring seal under that top optic is a seal type I've never tried before in order to make the light as small as possible. The seal is actually created on the sidewall and bottom press-fit seat of the optic instead of the top lip. This also allows the optic to perform better by having a larger topside diameter.

    -Fraz

  12. #42
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Ok awesome, thanks. I think I can picture what you mean; I have seen some seals like that before where it sits on a shelf and kind of cups the edge of the optic or lens. I can see where itís more compact than the ďsandwichĒ style.

  13. #43
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    So far the only thing I noticed that some of us nerds might fuss over is the kinda weird square beam pattern from this optic. HOWEVER, it seems to only be noticeable when wall hunting. At any distance the beam is diffused enough that it dissipates and isnít really seen. Also, just a question: is it possible to tighten the head enough to do damage to the light engine or will the threads bottom out before you smush something? With most twisties, you stop twisting when the light turns on. With this light you keep twisting to get more light. I went until it seemed like it was getting hard to turn and wasnít getting much brighter but didnít want to over torque it.

  14. #44
    *Flashaholic* gunga's Avatar
    Join Date
    Nov 2006
    Location
    Vancouver, BC, Canada
    Posts
    7,943

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Heya. How stable are the low output, moonlight levels? Do they drift a lot?

  15. #45
    Flashaholic* id30209's Avatar
    Join Date
    Mar 2008
    Location
    Europe
    Posts
    1,702

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by gunga View Post
    Heya. How stable are the low output, moonlight levels? Do they drift a lot?
    I have old Fraz, 26650 tank and low levels are rock solid. I believe new engine is even better

  16. #46
    *Flashaholic* gunga's Avatar
    Join Date
    Nov 2006
    Location
    Vancouver, BC, Canada
    Posts
    7,943

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Oh. Great to hear!

  17. #47
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    I agree, I feel the new design is even more stable. It ramps more smoothly and predictably, and when a given output is selected it seems to stay put.

  18. #48
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by nbp View Post
    So far the only thing I noticed that some of us nerds might fuss over is the kinda weird square beam pattern from this optic. HOWEVER, it seems to only be noticeable when wall hunting. At any distance the beam is diffused enough that it dissipates and isnít really seen. Also, just a question: is it possible to tighten the head enough to do damage to the light engine or will the threads bottom out before you smush something? With most twisties, you stop twisting when the light turns on. With this light you keep twisting to get more light. I went until it seemed like it was getting hard to turn and wasnít getting much brighter but didnít want to over torque it.
    Yes, one of the first things I noticed as well. The beam has a round center with squared outer spill. And this beam changes with different emitters. I am using two different optic types in the Lumenite with the throwier one giving the more squarish spill edges. And like you, I only really noticed it on the wall. You can see the squared edge on the beam in the youtube beamshot video of the light at frazlabs youtube channel. I am also working to eliminate that squared edge as much as possible - very small incremental changes of the optic seat above the emitter slightly change the pattern.

    You do not have to worry about damaging the engine or smashing something through over compression. The first few prototypes I tested to failure and then changed the design to eliminate the failure point (no engineered obsolescence here). You will get an idea of when the light is at max brightness when it becomes difficult or impossible to turn. The piston will protect the QTC from too much pressure, and the internals above the piston are protected as well. The new piston also keeps the QTC more self-centering to prevent pinching on the edges.

    Also, much thanks for answering all these questions about the light

    -Fraz

  19. #49
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by gunga View Post
    Heya. How stable are the low output, moonlight levels? Do they drift a lot?
    Quote Originally Posted by id30209 View Post
    I have old Fraz, 26650 tank and low levels are rock solid. I believe new engine is even better
    Quote Originally Posted by nbp View Post
    I agree, I feel the new design is even more stable. It ramps more smoothly and predictably, and when a given output is selected it seems to stay put.
    One of the things that drove me most crazy about the old design was the seeming unpredictability of the QTC when it became old and worn or frayed around the edges. These small worn pieces and frayed edges on the QTC could make contact prematurely with the upper piston or become sandwiched in the walls or pinched causing some strange artifacts especially at very low levels where there isn't much amperage traveling through the system. Also you couldn't get to the QTC to change it or adjust it (without some pliers and an allen wrench and about 10 min).

    These problems were solved by the new engine and piston system by having better piston cavity geometry and a self-centering QTC magnet in the center of the piston. I now have some prototype lights that have a pile of worn and unrecognizable QTC remains at the center of the piston that still ramp well because they are kept away from the edge and the pinching that causes flickering. And any QTC in the new system can be adjusted, flipped, or replaced by simply tapping the engine into your hand or on a table to get at the piston.

    -Fraz

  20. #50
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    That is great news about the relatively ďdummy proofĒ design. I should take mine apart to see how it goes and how simple it is. I like the idea of the easy maintenance of the QTC.

  21. #51

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Have you tested a Nichia 319 with this optic? It may round out the square shaped spill.

    Sent from my Pixel 3 using Tapatalk

  22. #52
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    I did the hand whack with the head to see what falls out, haha. I was very impressed to see the little brass nubbin fall out with the QTC magnetted to the backside! What a cool idea! It is super easy to put a new piece in if needed, but after a few days of a fair amount of twisting and playing I donít see any wear on the QTC dot at all. It looks like this design allows for the pressure to just be concentrated on the QTC pill just along one axis vs tossing a piece in a battery crusher style light where it is compressed but also twisted and physically abraded. Neat!

  23. #53
    Flashaholic* DIWdiver's Avatar
    Join Date
    Jan 2010
    Location
    Connecticut, USA
    Posts
    2,464

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by TheFraz View Post
    Yes, and one of the trickier parts is getting the right seals on the various optics. That is why currently I don't recommend going below bathtub level or so submersion until I can test them in a lake. Although all these early lights will certainly be fine dropping them in a creek or in a heavy storm or whatever. My ultimate goal is 50 feet.

    The o-ring seal under that top optic is a seal type I've never tried before in order to make the light as small as possible. The seal is actually created on the sidewall and bottom press-fit seat of the optic instead of the top lip. This also allows the optic to perform better by having a larger topside diameter.

    -Fraz
    I have a pressure tank, and could test them to any depth (I tested my dive light to 500 ft) if you want to send me something to test. Maybe a handful of empty bodies?

    Personally, though, I think most designs are more prone to leaking at shallow depths. High pressures, IMHO, are most useful for verifying implosion resistance. Of course there are exceptions to every rule.

  24. #54
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by nbp View Post
    I did the hand whack with the head to see what falls out, haha. I was very impressed to see the little brass nubbin fall out with the QTC magnetted to the backside! What a cool idea! It is super easy to put a new piece in if needed, but after a few days of a fair amount of twisting and playing I donít see any wear on the QTC dot at all. It looks like this design allows for the pressure to just be concentrated on the QTC pill just along one axis vs tossing a piece in a battery crusher style light where it is compressed but also twisted and physically abraded. Neat!
    Glad you liked it. That little magnetic piston seems so simple after the fact, but it took some serious head scratching to come up with that (not to mention those small pieces are my least favorite to machine).

  25. #55
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by DIWdiver View Post
    I have a pressure tank, and could test them to any depth (I tested my dive light to 500 ft) if you want to send me something to test. Maybe a handful of empty bodies?

    Personally, though, I think most designs are more prone to leaking at shallow depths. High pressures, IMHO, are most useful for verifying implosion resistance. Of course there are exceptions to every rule.
    That would be great! I'll definitely send you some parts to test as soon as I catch up on this waiting list for light orders.

    I've always been able to test these lights well at shallow depth (by swimming with the light and twisting it under the water a lot lol), but at deeper depths I'm just typically relying on a rope and depth finder and/or measuring tape. The deeper depths are also the only way I've gotten water to get past the o-rings. I'll be very interested to see what it can hold up to under a more controlled testing environment. Much appreciated DIWdiver!

    -Fraz

  26. #56
    Moderator
    nbp's Avatar
    Join Date
    Dec 2007
    Location
    Wisconsin
    Posts
    9,402

    Default New and upgraded Fraz Mechanical Smart Materials flashlights

    Some fun for you guys. I was at a friendís house out in the dark woods tonight for a bonfire so I brought my BOSS and Lumenite. As I was leaving I had to play out on their empty road along the river. The first pic is the BOSS. I think itís set at about 1900 lms. The second is the Lumenite cranked up. The output must be within a couple hundred lms of the BOSS. BOSS clearly is more floody with the triple, and illuminates the foreground and nearby trees more. But the Lumenite is no slouch and definitely has more throw, as you can see the trees as the road curves more clearly. Not bad!

    Edit: Why is there suddenly PB logos on the pix?! Grrrrr. That obscures the beamshots. 🙁




  27. #57
    Flashaholic* id30209's Avatar
    Join Date
    Mar 2008
    Location
    Europe
    Posts
    1,702

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Holly .... Thatís no joke for sure

  28. #58
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Quote Originally Posted by nbp View Post
    Some fun for you guys. I was at a friendís house out in the dark woods tonight for a bonfire so I brought my BOSS and Lumenite. As I was leaving I had to play out on their empty road along the river. The first pic is the BOSS. I think itís set at about 1900 lms. The second is the Lumenite cranked up. The output must be within a couple hundred lms of the BOSS. BOSS clearly is more floody with the triple, and illuminates the foreground and nearby trees more. But the Lumenite is no slouch and definitely has more throw, as you can see the trees as the road curves more clearly. Not bad!

    Edit: Why is there suddenly PB logos on the pix?! Grrrrr. That obscures the beamshots. 

    Thanks for the beamshots nbp!




  29. #59
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights

    Added a video in the 2nd post showing some of the CNC ops we use to make these lights. All the components are made in Jonesboro Arkansas and assembled at our house in Little Rock, AR.

    Here it is if you don't want to scroll:

  30. #60
    TheFraz's Avatar
    Join Date
    Aug 2007
    Location
    Little Rock, AR
    Posts
    265

    Default Re: New and upgraded Fraz Mechanical Smart Materials flashlights



    Upgraded design and some new info at the sales thread here: https://www.candlepowerforums.com/vb...Battery-Crush)

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •