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Thread: Good switching speed

  1. #1
    Join Date
    Apr 2015
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    Good switching speed

    Hello I was wondering if a 1/10,000 switching speed is good for a welding helmet? I was looking g at the jackson w40 insight and that is the speed it has I believe 0.1ms is equal 1/10,000. When I look at the speedglas specs it also says it has a 0.1ms switching speed so is this speed good for a welding helmet? I do a lot of stick mig and soon tig welding

  2. #2
    Join Date
    May 2010
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    Re: Good switching speed

    Have one of the Jackson BH3 with extra inside and outside lens packs (8 extra each I think) for sale asking $150 . Has black bezel not yellow because of a mixup when I ordered a replacement for the one I broke. Works the same though. Name:  uploadfromtaptalk1442422272348.jpg
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    Tiger Sales: AHP Distributor www.tigersalesco.com
    AHP200x; AHP 160ST; MM350P, Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma.
    For Sale: Cobra Mig 250 w/ Push-pull gun. Lincoln Wirematic 250

  3. #3
    Join Date
    Aug 2014
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    baltimore
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    Good switching speed

    I had a helmet with a 1/25,000 switch speed but the lens still fatigued my sensitive eyes. I switched to a Jackson Balder.

    The Jackson Balder lens is amazing! I have the cheaper SmarTiger which is about the same price as the Insight. Balder should have better optics than the insight I would think.

    It has improved the quality of my beads tremendously. I love it! So the BH3 from southpaw is the nicer version. Good deal to consider, or a used speedglass.


    Sent from my iPhone using Tapatalk
    Last edited by Seawalker; 09-18-2015 at 02:22 AM.

  4. #4
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    Good switching speed

    Some physics to ponder...

    How much light can reach your eye in .1 ms -- or whatever time interval the filter takes to darken?

    The speed of light is something like 200,000 meters/second --if I remember correctly. And your face is pretty darn close to the Arc.

    And what is the intensity of lumens during that time interval before the filter switches . Depends on the power and process of course. It would be interesting to know how bright the start of an arc is

    Whatever light is getting to our eyes I don't think we can tell because our brain can't register it fast enough it seems.
    Last edited by Seawalker; 09-18-2015 at 02:51 AM.

  5. #5
    Join Date
    Nov 2010
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    Houston Pennsylvania USA
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    Re: Good switching speed

    I would just close my eyes to strike the arc. Takes switching speeds out of the equation (if it really means anything to begin with) and its business as usual.

  6. #6
    Join Date
    Mar 2007
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    Lookout, West Virginia
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    Re: Good switching speed

    There is a passive UV filter built in to these lenses, so no matter how fast or slow the switching speed, no harmful UV will reach your eyes.

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