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Thread: Got Lucky - Right Place at the Right Time

  1. #151
    BVH's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    That's a great practice. Definitely worth a try.
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  2. #152
    BVH's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Got the MR rigged up tonight so that I could, with precision, test the beam maximum focus by shooting the Manufacturer's mechanically stopped focus, +1/16, +1/8", +3/16", +1/4", + 5/16" forward movement of the tube & lens. Now a couple of qualifiers. All shots are at F3.5 and 8 Sec. When cropping, I tried to be as close to the same for all but as you can see, I was not equal on all of them. I don't think that makes a significant difference. What I actually saw, was more dramatic than depicted. The moment I moved forward from MFG stop, it was apparent that the donut hole was developing. It is difficult to see the difference between mfg's stop and 1/16" but look closely at the size of the hotspot btw the two. The mfg's stop is smaller.

    MFG's max




    +1/16" forward




    +1/8" forward




    +3/16" forward




    +1/4" forward




    +5/16" Forward




    MFG's max (again)

    Last edited by BVH; 05-31-2012 at 10:21 PM.
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  3. #153
    Flashaholic* FRITZHID's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    well.... MB has that lens that compensates for the doughnut hole... maybe that could be used? JAT.
    if your not wearing a #12 welding screen than it ain't bright enough! "Hand-Sun H.I.D." 55w & 75w, Rocky 3w LED, Stanley 109 35w mod'd, Maxa-Beam Gen II, 55w hid/100w incan Vector Twin, 400w MH long arc, 100w MH mid arc. Amondotech n30, vss-3A.

  4. #154
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    Default Re: Got Lucky - Right Place at the Right Time

    Without having a collimating filter for my MB, I don't know the results of using it but what I don't understand is....You buy a MB for it's laser thin beam. If you want to flood it out a bit, use the de-focus feature. But you can do that to the point of having a donut hole. But now you can get rid of the donut hole with a filter. But why not just re-focus the beam instead of having to carry and use a filter?
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  5. #155
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    Default Re: Got Lucky - Right Place at the Right Time

    Hurray! No more Magic Smoke escaping after a 20 minute run. I suspect it was the silicone sealant holding the silicone doughnut in-place and not the silicone doughnut itself. Actually, the sealant was probably to increase the amount of flash-over protection insulation beyond the doughnut because the doughnut is very thin at its' point of contact on the bulb versus its' nominal thickness of about 1/4".
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  6. #156
    Flashaholic* FRITZHID's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Quote Originally Posted by BVH View Post
    Without having a collimating filter for my MB, I don't know the results of using it but what I don't understand is....You buy a MB for it's laser thin beam. If you want to flood it out a bit, use the de-focus feature. But you can do that to the point of having a donut hole. But now you can get rid of the donut hole with a filter. But why not just re-focus the beam instead of having to carry and use a filter?
    well, MY guess would be able to have a larger spot w/out the donut.
    if your not wearing a #12 welding screen than it ain't bright enough! "Hand-Sun H.I.D." 55w & 75w, Rocky 3w LED, Stanley 109 35w mod'd, Maxa-Beam Gen II, 55w hid/100w incan Vector Twin, 400w MH long arc, 100w MH mid arc. Amondotech n30, vss-3A.

  7. #157
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    Default Re: Got Lucky - Right Place at the Right Time

    I didn't mention that a while back, I was in the process of removing the front lens by removing the retention clip and then I set the light down to get a different grip. The lens fell forward striking another magnifying glass lens I had sitting on the bench and a small chip appeared. Big enough to be visible in the beam. No, it couldn't land on the carpeted bench top, it had to find the other piece of glass! I communicated with Leon at MR and asked how I go about buying a replacement. He came back saying that he would look around back in the shop to see if there was a used one sitting around. Same day he came back and said he had found one with a tiny chip on the edge that is covered by the retaining ring. He sent it to me for nothing, including postage!! And when it got here, I was extremely please to find it was AR coated! How about that for customer service!!
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  8. #158
    BVH's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Maybe the only On-Board Power Megaray in existence?

    26.4V/4.2AH LiFeP04 pack
    Self machined Aluminum mounts and end caps
    Carbon Fiber Tube

    On Board battery negates need for Red Buret!

    MR draws about 8.5 to 9 Amps at 26V so I expect to get maybe 20 - 25 minutes of run time.

    Back end power entry end cap




    Back end cap and rear battery support ring




    Back end support ring flat mounting surface and screw




    Front end cap




    Finished

    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  9. #159
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    Default Re: Got Lucky - Right Place at the Right Time

    That looks really nice, BVH. Lovely combination of materials. That lathe is a handy thing!!
    Thanks God you could lose the beret (quite fetching, though, on the right person....)
    What about a belt mount??
    Kind Regards

    David

  10. #160
    Flashaholic ShortArc's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Nice work Bob!
    But it's round...how can you set it down
    PS. Got the 125W version, now to find the time to compare it to the 175W one.

  11. #161
    Flashaholic ShortArc's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Here is a pic of the Lead Acid Bat pack it came with.


  12. #162
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    Default Re: Got Lucky - Right Place at the Right Time

    Now That's what I call HEAVY duty!

    One thing I did not plan on in deciding to do this project, was that the MR has a full-time parasitic current draw of about 40 mAh. I found this out while finishing the electrical connections and observing a tiny spark when connecting the fuse. So, while it's not difficult to remove the setscrew and front end cap for charging, it will require an additional R&Rs for connection and disconnection of the electrical when using the light. The draw will empty the pack in 4 days.

    While I did not think that the mod was all that practical, I thought it worth the effort considering I wanted some experience on the lathe and mill and that I have another MR that is stock. This one may go back to stock. But then again, I hardly use them so what's a few extra minutes going to cost?
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  13. #163
    Flashaholic ShortArc's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    WOW a 40mA draw. That is alot. Thank you for this discovery.

  14. #164
    Flashaholic* Lips's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Quote Originally Posted by BVH View Post


    Very Cool. I'm jealous!


    Bet soldiers would like setup over heavy backpack at times.

  15. #165

    Default Re: Got Lucky - Right Place at the Right Time

    What do mean the lights are from south africa?

  16. #166
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    Default Re: Got Lucky - Right Place at the Right Time

    Quote Originally Posted by stephan van straaten View Post
    What do mean the lights are from south africa?
    Night Vision Optics/Megaray: Somerset House I 11 York Street I Randburg I Johannesburg I 2194 I South Africa
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  17. #167
    Flashaholic japudjuha's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    BVH
    In your first post you mentioned a portable 28v power supply.

    Quote:
    "What the heck – a new 80 Watt Maxabeam is $2,300 and I can run this light on my 28 Volt portable power supply so a working light would cost me about $1,850 with shipping."

    May I ask about the specifics of this PS.
    I am looking for any options that will work for powering a Q4559X application.

    Thanks
    James

  18. #168
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    Default Re: Got Lucky - Right Place at the Right Time

    PM sent.
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  19. #169
    BVH's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    A free MegaRay charger over on MarketPlace Giveaways.
    WWII 60" Carbon Arc (Sold), 1.6KW NightSun, 1KW VSS-3A, .8KW TrakkaBeam, 600W M-134 Light, 500W X-500-14s, 500W Starburst, 500W A120b, 450 Watt AEG German Leopard 1 Tank Light, 300W Locators, Megaray, 150W Communicator, Maxabeam Gen3, Pichel 75W Mini-Novas

  20. #170
    Flashaholic* bshanahan14rulz's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    Very nice of you, nice kits too :-)

    I did want to comment and say that tube looks awesome!

  21. #171
    Flashaholic holylight's Avatar
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    Default Got Lucky - Right Place at the Right Time

    When I get my hands on these, my wife will use it it to knock my head.....
    lights: saber1a, v11r, sc52, sc600ii, ea4, tn31, archer1a.



  22. #172
    Flashaholic* The_Driver's Avatar
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    Default Re: Got Lucky - Right Place at the Right Time

    BVH's light with the mounted battery is definitely one of my dream lights!

    Using the numbers posted on their website and in the manual (for the current MKII version) I calculated some stuff:
    At max-focus (2°) it does 51lux at 200m distance. This means the luminous intensity is 3,187,500cd (a quarter of the Maxabeam, so half the range)
    In a distance of 1000m it thus does 3.1875lux. According to the manual the hotspot has a diameter of 35m in this distance with max-focus. That equates to an area of 962m2. So there are around 3066 lumens in the actual beam at 1000m distance (values in other distances will be very similar)! That's an extremely high value for a light with this much candela! Since the light also doesn't have any real spill it is probably best suited for actually seeing stuff in long distances.

    The Maxabeam has a very deep reflector which limits the amount of light which is actually in the hotspot (a lot actually goes into the corona). There are probably less than 1000 lumens actually in the main hotspot. Thats a big difference!

    I have used the Lemax LX-70 (standard head version). Because of the properties of the arc in the car HID bulbs only a very small hotspot actually has the stated luminous intensity. The corona is much, much larger (and still very bright), but it intensity is much lower. I think the Superpower probably has a very similar beam pattern (jut more focussed). This means that there is also probably less light in the actual hotspot compared to the Megaray even though the Lemax lights have much more lumens to work with.

    EDIT2: Together with the Lemax/Xe-Vision lights the Megaray also has a much better flood mode compared to the Maxabeam. The former can be used with a diffusor while the Megaray can de-focus to 6° and all the way to 74° with an add-on lens. All of that with a uniform beam pattern. The Maxabeam has a big donut hole when defocussed, can be used with an add-on lens (probably to get rid of the donut hole), but really suffers from low total lumens output.

    EDIT3: it's interesting though that Cermax states that the bulb used in the Mageary (Cermax PE175BF) only produces 2200lumens at 175W!?! In the manual Megaray states a lumens output of 4375 lumens "as per the lamp manufacturer at 25lm/W". The latter value does make much more sense to me! Low-powered xenon short-arc lamps have an efficiency in this range.

    Edit4: my calculations are probably wrong. The Megaray also has a visible corona on BVH's beamshots. The stated spot diameter probably refers to this Corona. This beam profile makes sense because the arc of a Xenon short-arc bulb does not have a uniform luminance like an LED. It has a small bright spot and a dimmer, much larger area around it.

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