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Thread: Esthan's Fenix T1 Abuse - with Pics.

  1. #1

    Unhappy Esthan's Fenix T1 Abuse - with Pics.


    Thanks to David Chow form Fenix-Store.com I'm having the pleasure of showing You
    the results of my abuse of a long avaited Fenix: the T1.

    Before started to have fun with T1, it looked as follows:




    Day 1: Waterproofness test.
    Since I lack the time to play around with flashlights during the week, I've
    decided to alter my former methods and I've put the T1 in a bottle filled
    with water, on the same day it came to me. It stayed there for 24h and
    after the test T1 was dry inside with no signs of any moist. As expected
    after seeing the o-rings, it performed flawlessly.

    Day 2 to 5: Cold resistance test
    Compared to P3D abuse, T1 went to the freezer without batteries (LED
    creates heat that prevents T1 from freezing completly). T1 got frozen in
    a cut down PET plastic bottle (only thing that could fit in my freezer)

    Today in the morning, I've taken the T1 from the freezer and it looked
    like that:



    To show You, that T1 has been imprisoned in ice, and that it worked well
    just after the prison break, I've allowed myself to make a short movie that
    can be seen here: http://youtube.com/watch?v=jNyXf4154yM

    Day 5: Durability test

    Please allow me to quote T1's ad: Solid as
    TANK. If they say so, we need to
    prove it. I've started quite simple:

    20 drops on concrete floor - from 1m height on the head.
    T1 just after the test:


    As You see on the pic, SS bezel shows some wear. Before anyone asks about
    the wear on the body - T1 bounced on the head and landed as it wanted on
    the floor. Anyway, T1 still works flawlessly. Next step was:

    20 drops on concrete floor - from 1 m height on the switch.
    Unfortunately, after the sixth fall the switch said good bye and went crazy.
    What do I mean by crazy: it either clicked or not, it either reacted to clicking
    or not, it either reacted to pushing or not. I've filmed it, and You can see the
    switch behave chaotically here: http://youtube.com/watch?v=aoIUskuZtwg.

    Formally, I should have finished the testing at that moment, for T1 stopped
    being useful not only as a Tactical but also as a Practical product. But since
    I moved my 3 letter to the airport, I decided to continue the testing. So I went
    on through 14 drops from ca 1,2m height. After the test it looked like that:



    20, IMO standard drops were sufficient not only to shorten the teeth on the
    switch and eliminate the switches protection but also to generate a finger
    unfriendly surface (able to cut skin). I do not know if those teeth are too
    thin to T1's mass or the aluminum alloy is to soft - but IMO this is not a
    good design and it needs improvement.

    Next thing was the body test, that is:

    20 drops on concrete floor - from 1m height on the body.
    Nothing unusual happened here, and after the test T1 looked like that:



    Since I did not expect any problems from above mentioned drops I also planned
    to repeat the tests from 2m height (as in my post here.)

    20 drops on concrete floor - from 2m height on the head.
    Result has shocked me:


    I do not know exactly when did it happen, but it happened, pic says all...

    20 drops on concrete floor - from 2m height on the switch.
    I did that one out of curiosity, just to check how will it dull the teeth and see
    if anything unusual happens - for the switch was no more protected from the
    impact by the teeth. Well, teeth got shorter and switch did not repair itself.
    Below is the pic taken just after the test:



    20 drops on concrete floor - from 2m height on the body.
    Aside of the fact that all of the glass remains were shaken away from the
    head nothing worth mentioning happened. Below is a pic of the T1 just
    after the drops:



    Conclusions:
    - First of all, I've decided to skip the drag test, it wouldnt bring much since T1 was already unoperable.
    - I do not know whether it happened before the glass break or after it, but low mode went
    and remained inaccesible. (It shows itself for a split of a second and T1 goes off.) -
    /Edit: It seems to be accessible now.
    - T1 is not solid as tank! It is not even as solid as it's sister the P3D
    Proof for that is here.
    Last edited by Esthan; 01-05-2008 at 10:59 AM. Reason: Low mode got accessible.
    Heaven must be full of Bullterriers and radishes :]

  2. #2
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Great info Esthan. While I'm one (of the few) who do not think the T1 is really any more durable than similar lights with less weight (weight and bulk don't necessarily protect the insides), I'm not sure it's fair to compare the T1's abuse to the P3D's abuse. It doesn't look like the P3D was put thru the drop tests that the T1 was. While the P3D was dragged thru various roads, water, dirt, and mud, it wasn't dropped which incurs a much higher degree of stress and shock to the body and internals. I would be interested to see how the P3D holds up to identical testing conditions as the T1. In fact, I'd be interested to see any other light performed with identical tests to the T1. The lighter weight of the other lights may improve results, but w/o comparative testing, we only know what the T1 can handle and not how tough it is relative to other lights.
    Thanks for the great testing info and I hope you continue to provide us with such great info on other lights.

  3. #3

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    How can you truly compare the two when you dragged one through the mud and dropped another from 2 meters? Dragging a light won't likely break anything, but dropping on another hand... different scenario.

  4. #4

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by Mercaptan View Post
    How can you truly compare the two when you dragged one through the mud and dropped another from 2 meters? Dragging a light won't likely break anything, but dropping on another hand... different scenario.
    A quote from my P3D Abuse:
    "In this test, P3D has taken at least 10 landings on concrete alike ground from 2 to 3m height - and it continued to work."

    It also took some flights on stony and muddy ground.

    Since P3D is not advertised as solid as tank, and it survived a fair share of beating (drops). I personally think
    it more tough than T1 - for T1 should be able to take a lot of punishment - but after a 6'th !! drop it went
    inoperable.

    I still have the P3D at home, so I'm going to give it 20 drops on the head and switch later form 1 and 2m height.
    Last edited by Esthan; 01-05-2008 at 11:15 PM.
    Heaven must be full of Bullterriers and radishes :]

  5. #5
    Flashaholic* PhantomPhoton's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Interesting report. I was surprised to see the window break so soon. Not surprised that the switch is the weakest link. Those little pointy teeth on the tailcap definitely need to be tougher. Perhaps Fenix should make the tailcap out of steel and not make it so pointy.
    So a question I have is, even though the switch is completely useless on the T1, if you short the negative end of the battery to the body of the light, will the T1 still light up by bypassing the switch?
    Neutral white, it's the new black.

  6. #6

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    I too was disappointed by the complete lack of consistency between tests of different models. As an electronic engineer who has to subject designs to a whole battery of tests, I know that it is really impossible to make something completely foolproof/breakproof. Any device given enough punishment will break - it's actually the most fundamental law of nature. So all you have really succeeded in doing is confirming that law.

    I expect Fenix subjected their light to the standard industry tests to confirm its toughness.

    I also wonder about your drop tests. While industry standard drop tests are done, these are typically performed from 1.2m height to simulate a person dropping the device. Tests are limited to IIRC 5 drops in each orientation. That's what's reasonably expected in a device's lifetime (unless you are a complete klutz who drops his device every time it's used).

    Then your freezing test - what on earth is it for? The instance when a device gets frozen solid in a block of ice must be rare indeed. Far better to simply stick it in a freezer, record the temperature and test full functionality under low temp. Then stick it in an oven at say 60degC, do same. Subject it to thermal stress by putting in oven straight from freezer repeatedly and test full functionality each time. Don't include the battery in those tests since you are not testing that.

  7. #7

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Jur,
    If You are so good and have as much knowledge as You claim, start doing
    such abuse test. I'll be more than glad to read few of those. All You see
    here are results! Those are easy do discuss but not as easy to foresee or
    plan.

    As for complete lack of consistency between the test - read the post nr. 9
    Besides, you do not pay for those test, in fact no one does (aside of the
    Dealers who are kind enough to lend me one of their puppies)- it's done
    from my free time - and I do not have much of it. So be more careful what
    You say.

    As for freeze test, I never said that has any big purpose.

    PhantomPhoton:
    Shorting the negative batt terminal to the body works. T1 gets switched on.
    Teeth are a way to weak - a protection, such as the one in P3D would be a
    much better solution. Glass "touches" * the SS bezel - a shock absorber like an
    o-ring could offer some protection for the glass - but that is just a theory.

    Since many here and on the Polish forum were disappointed about the "lack"
    of consistency, I woke up early and repeated the test with P3D. Results:
    - 20 drops from 1m on the switch - no effect
    - 20 drops from 1m on the head - no effect
    - 20 drops from 1m on the body - no effect

    further tests:
    - 20 drops from 2m on the switch - no effect
    - 20 drops from 2m on the head combined with 10 drops from 2m on the body:
    P3D stopped working.

    Glass is OK, switch works fine (checked with my multimeter), Rebel LED is ok -
    Autopsy - something must have gone wrong in the electronics.. Not sure, I
    have no access to it (do not know how to disassemble the the head further
    after removing the part with the reflector).

    P3D is by far more durable than T1.

    P3D after drop testing (same as T1):


    Damage comparison between T1&P3D (head and switch)


    *Upon disassembling the SS bezel I've found a small plastic ring that with very
    high probability has been placed between the glass and SS bezel. Thats a good
    idea :]
    Last edited by Esthan; 01-06-2008 at 08:39 AM. Reason: Found a ring below the bezel.
    Heaven must be full of Bullterriers and radishes :]

  8. #8

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Thanks for the tests and the writeups! You are the one out there putting your time to do it, so credit where its due.
    Perhaps other CPFers can suggest other tests, and we can come up with a standard test methodology for the future; this I think is more useful than discussions after the tests are done.

  9. #9

    Default Re: Esthan's Fenix T1 Abuse - with Pics.


    Since drag test, in it's current form is weather dependent, I needed to change
    the route. That is why I went to the Airport - for it offers nearly the same
    conditions and less people are using it by that time. (Other route needs ca.
    an hour to get there - the hour I have not had yesterday).

    As for drop test, the results have surprised me, for honestly said I've not
    expected it to do as much damage as it did - I thought it to be a warm up
    before dragging T1 on the ground. Since I've been doing the drop tests "in
    the meantime" while dragging a torch on the ground, I have not counted the
    drops as exact as I should. So this was supposed to be a new repeatable
    and weather independent test - You can see the results yourself.

    T1 is marketed as solid as tank, so one expects it to perform better than
    other flashlights - that is why I got really disappointed when the switch
    said goodbye after a 6'th drop from the pocket height*, for it's not a
    tank alike performance. T1 got IMO useless at that point and there was
    no need to drag it on the ground - it would not prove anything. Hence
    the opportunistic decision to gain as much data from the drop test as
    possible aka 60 drops from 2m height - and the data got gathered.

    One thing remains certain, with each test I'm gaining more knowledge that
    can be used to improve the next test, but I do get caught up by sruprise,
    so please show some understanding.

    * be warned - I've checked it first after the 6'th drop! for T1 started turning
    itself on in the moment of contact with the ground - clear sign that the teeth
    didn't protect it anymore.


    IMPORTANT NOTE TO ANYONE WHO PLANS TO DROP T1 OR OTHER TORCHES
    FROM VARIOUS HEIGHTS:
    BATTS GET DAMAGED THIS CAN BE DANGEROUS TO THE TESTER.

    SF123 on the left has taken part in this drop test:
    Last edited by Esthan; 01-06-2008 at 02:59 AM.
    Heaven must be full of Bullterriers and radishes :]

  10. #10

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Great testing. I became a flashaholic when I read that an Inova flashlight survived fall down an elevator shaft 40 stories. I am not sure if the story is true or not, but I bought one and it is still working. I bought a Fenix P3D RB100 and while it is not as durable, it outshines and runs longer than my Inova. Keep up the great volunteer work. If you do not have any plans for the T1, send me a PM (I think David wants them back). I would like to try to get it working again.
    Teknolite, Black Diamond Icon, Inova X1, Inova Radiant AA, Nuwai TM-301X-3, Fenix P1D-CE, Fenix P3D-RB100 , Quark 123-2, and Quark 123-2 Tactical.
    SOON......New 4Sevens ?.?.?.?.

  11. #11

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by wild68fury View Post
    Great testing. I became a flashaholic when I read that an Inova flashlight survived fall down an elevator shaft 40 stories. I am not sure if the story is true or not, but I bought one and it is still working. I bought a Fenix P3D RB100 and while it is not as durable, it outshines and runs longer than my Inova. Keep up the great volunteer work. If you do not have any plans for the T1, send me a PM (I think David wants them back). I would like to try to get it working again.
    I've never heard about the 40 story drop, but
    more than two years ago, the Fenix L1P (first model made) was accidentally
    dropped 17 stories and still worked
    (http://www.candlepowerforums.com/vb/...light=elevator)

    Esthan, thanks for all your testing. If you ever open up the T1, you'll see the lens
    is pretty well protected in the stainless bezel and is slightly isolated from the aluminum
    body. Aluminum is actually quite soft compared to the stainless steel. There are
    two scenarios I can think of that will break the lens.
    1) If the light lands just right such that an object such as a rock hits the lens beyond
    the depth of the ss bezel. The bezel is quite deep and will guard against flat surfaces
    but if something angular reaches beyond the bezel and into the lens, then it could break
    the lens.
    2) When the stainless bezel begins to deform or when the impact is great enough to
    flex the stainless bezel, the lens will be suseptable to damage.

    Other things to consider... Stainless is very very hard. And the characteristics of
    the impact surface will greatly determine the shock that goes through the light.
    The harder the surface the greater the deceleration that takes place.
    Thats just some thoughts from me

    Of course all this abuse data will go towards the design of the next version of the T1
    as well as other lights in the T series. Don't ask when what where because I don't have any info
    Last edited by 4sevens; 01-06-2008 at 08:32 AM.

  12. #12

    Default Re: Esthan's Fenix T1 Abuse - with Pics.


    I can PM few improvement ideas :]
    One thing that I noticed after removing the bezel is a small
    plastic ring that is probably inserted between the bezel and
    glass.

    Nevertheless, Thank You for the Light 4Sevens
    Last edited by Esthan; 01-06-2008 at 08:37 AM.
    Heaven must be full of Bullterriers and radishes :]

  13. #13

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Esthan, maybe you could also add ur new drop test result of the P3D to your P3D Abuse Thread..

    as for the T1, I think it should have a some sort of replaceable rubber bezel / shock absorbers on the head, body and tailcap to absorb the drops since its way too heavy...
    Last edited by dinocol; 01-06-2008 at 08:47 AM.

  14. #14
    Flashaholic* woodrow's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Esthan,
    Thanks for your hard work and doing the test. I have the T1, and think it is a very tough light. I noticed that yours did not take nearly as much abuse as the other testers. I think it brings up a good point and kind of glad it happened that way.

    The point is, even tough things can fail from minor abuse...if everything goes wrong...hits a certian way etc. Perhaps if your light landed 1 degree differently, it would still be working, but it the perfect way for a failure to occour, and it did. A good reason to carry a backup, no matter what light you carry.

    Thanks again for your review.
    "I only smile in the dark...my only comfort is the night gone black..."lyrics from Garbage

  15. #15
    Flashaholic* WadeF's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    It seems the forward clicky switches are more prone to damage, as we've seen SF owners mention their SF clickies break from a SINGLE fall where the light falls on the tail switch. I'm not surprised the T1's switch also failed from being dropped on it, especially as much as the T1 weighs. A heavier light will generate more force when it hits the ground. That's why the P3D does so well in the drop tests, it's very light. If you think the P3D being dropped from 2 meters puts the same force on it's switch, or parts, as the T1 does when being dropped from the same height, you better think again. That T1 is going to hit like a brick and any parts that absorb a majority of that impact are going to take a real beating.

    Fenix should look into ways to improve the impact resistence of the switch, and maybe the glass. Thicker glass with maybe double o-rings, like Esthan suggested, might help.

    Does the T1 naturally want to fall on it's tail switch, or does it naturally try to fall on the bezel?
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  16. #16
    *Flashaholic* greenLED's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by WadeF View Post
    Does the T1 naturally want to fall on it's tail switch, or does it naturally try to fall on the bezel?
    During part of my testing, I noticed it fell on the bezel most often. I was pushing the light (which was bezel down on a shelf) onto a concrete floor from waist-height.

  17. #17
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    T1's aluminum is a bit on the soft side from my experience. I dropped it onto tile from maybe 3 feet, while inside the holster. One of the tail teeth landed first, even with holster cusioning it still dented and anodizing is falling off.

    I think they use 6061 which isn't hard to begin with.
    Last edited by jzmtl; 01-06-2008 at 02:48 PM.

  18. #18
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    I must admit I'm amazed that the 'tail teeth' get pounded down to nothing after a couple dozen drops.

  19. #19

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by WadeF View Post
    I'm not surprised the T1's switch also failed from being dropped on it, especially as much as the T1 weighs. A heavier light will generate more force when it hits the ground. That's why the P3D does so well in the drop tests, it's very light. If you think the P3D being dropped from 2 meters puts the same force on it's switch, or parts, as the T1 does when being dropped from the same height, you better think again. That T1 is going to hit like a brick and any parts that absorb a majority of that impact are going to take a real beating.

    Fenix should look into ways to improve the impact resistence of the switch, and maybe the glass. Thicker glass with maybe double o-rings, like Esthan suggested, might help.

    Does the T1 naturally want to fall on it's tail switch, or does it naturally try to fall on the bezel?
    WadeF:
    You are seeing the whole situation wrong. If You remove the switch
    protection from both lights - first or second drop on the switch will "kill"
    it instantly because both torches are heavy enough to do that.

    So it's all about the switch protection - P3D switch is protected by a round
    tube and T1 switch is protected by teeth. Both switches protrude a bit from
    the protection - but this should be no problem - in P3D upon drop, the switch
    is pressed a bit (spring takes all of the shock) and than the tube protection
    kicks in - taking the whole force to itself.
    In an undamaged T1 - switch is also protected - but as soon as the teeth
    get shorter, upon landing internal parts of the switch take more shock than
    those are designed to take (spring is pressed to a maximal point and shock
    goes to plastic internal parts - hence it's malfunction). Comparison Pic here:


    As You see from the tests P3D switch protection is better - and that is the
    point - for a tube is much more resistant than pointy teeth. If T1 switch
    had the same protection (for example like the switch in WolfEyes Raider) it
    would not get damaged as quickly as it did. Ok, it will not be as looking as
    "cool" but IMO it's not what it's about in a Torch. I've once punched my
    leg with Raider - and It hurt like hell - no teeth are needed to create pain :]


    As for the glass - it's quite big and IMO good protected - those drops from
    2m on concrete, although they seem harmless, generate a lot of shock.
    Maybe a better glass (annealed - if that is the proper term in English) or
    plastic lens could do better.

    How will T1 land ? It depends on the starting position.
    Last edited by Esthan; 01-07-2008 at 12:18 AM.
    Heaven must be full of Bullterriers and radishes :]

  20. #20
    Flashaholic BGater's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Im looking at the damaged battery from the T1 and wondering if that was part of the reason it failed to light up on the 6th drop. Did you try a fresh battery at that point ?

    This is a heck of a test for a light, if one passes all this its prooved it metal for sure ! Nice work. Im supprised the P3D took as much as it did, I love my L1/L2D's......but they feel a bit fragile. I have dropped my L1D down 13 concrete stairs going to my basement by accident. I was using the light on low when I dropped it and it was still on low working fine when it stopped at the bottom.

  21. #21

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    I didn't - but You made a good point here !

    Still, I think that batt has not been that damaged after the sixth drop.
    I'll insert fresh ones in 10h (I'm at work now) and see how T1 performs.
    Heaven must be full of Bullterriers and radishes :]

  22. #22
    Flashaholic* Crenshaw's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by BGater View Post
    Im looking at the damaged battery from the T1 and wondering if that was part of the reason it failed to light up on the 6th drop. Did you try a fresh battery at that point ?
    not to doubt your ability Esthan, but still, +1

    4sevens is becoming a tease....

    at least now we all know how to get rid of the prongs we so disliked...

    i think a T1 with sf like twistie with momentary on is just what the docter ordered..

    Crenshaw

  23. #23

    Default Re: Esthan's Fenix T1 Abuse - with Pics.


    Since T1 that I got is inoperable, and I have two 95% full SF batts that got damaged
    as well, what do You think about a controlled shortcut inside the T1 ?
    Heaven must be full of Bullterriers and radishes :]

  24. #24
    Flashaholic* WadeF's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Maybe the T1 needs hardend stainless steel around the tail switch, rather than aluminum.

    Also that smashed battery could have been why the light stopped working so soon. The batteries should have been checked the instant the light stopped working properly. Something to keep in mind for future tests, by anyone doing these kind of tests.
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  25. #25
    Flashaholic* f22shift's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by WadeF View Post
    A heavier light will generate more force when it hits the ground. That's why the P3D does so well in the drop tests, it's very light. If you think the P3D being dropped from 2 meters puts the same force on it's switch, or parts, as the T1 does when being dropped from the same height, you better think again. That T1 is going to hit like a brick and any parts that absorb a majority of that impact are going to take a real beating.
    i think that's the key

  26. #26

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by BGater View Post
    Im looking at the damaged battery from the T1 and wondering if that was part of the reason it failed to light up on the 6th drop. Did you try a fresh battery at that point ?

    There is less flickering with new batts installed, but the switch still behaves
    as chaotically as in my short movie.
    Heaven must be full of Bullterriers and radishes :]

  27. #27
    Flashaholic* woodrow's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    This discussion does bring up one good thing about reverse clickies...they are protected more than forward ones. Each strength usually creates a weakness in another situation. Fortunately for most of us, we rarely drop our lights more than a few times each!
    "I only smile in the dark...my only comfort is the night gone black..."lyrics from Garbage

  28. #28
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Quote Originally Posted by Esthan View Post

    Since T1 that I got is inoperable, and I have two 95% full SF batts that got damaged
    as well, what do You think about a controlled shortcut inside the T1 ?
    We want videos.

  29. #29

    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    Give'em a finger and they'll take the hand :]

    I'll do it later in the evening.
    Heaven must be full of Bullterriers and radishes :]

  30. #30
    Flashaholic* xevious's Avatar
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    Default Re: Esthan's Fenix T1 Abuse - with Pics.

    According to posted specs, the T1 weighs approximately 153g while the P3D is about 50g (for comparisons, the SF L4 is 94g and the SF L5 is 204g). That extra mass on the T1 contributes to the impact damage (obviously 2/3 less mass on the P3D). And given that the tail cap is designed as it is, the impact is more severe to the prongs. Those two factors combined with the metal being aluminum... no wonder the T1 suffered as it did.

    It's too bad the switch test was done early on... it would've been interesting to see if the circuit board and emitter survived the bulk of the abuse. If Esthan could take apart the switch and be able to fix it, then we could see if the rest of the light is still functional. But given the design and damage, not likely.

    So now there's two more versions: black anodized and clipless (olive). I would hope that Fenix can redesign that tail cap, increase tensile strength, and then make it available as a separate part that can be purchased by current T1 owners.
    Last edited by xevious; 01-08-2008 at 11:04 AM.
    Lights in my rotation: Nitecore EA4 | Surefire U2 | Novatac EDC-120P | Olight M20 R5 | Fenix P3D-Q5, PD30. L0D-Q4 | Regal WT1 | Pila GL3/D26

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