School Light Bar Colored Lens Replacement?

Discussion in 'Lighting and Electrics' started by DannyDepac, Nov 21, 2018.

  1. DannyDepac

    DannyDepac Member

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    Hi Everyone,


    I work at a HS and our Stage lighting is not exactly "New"

    We have three LARGE light bars above our stage that have red white (clear) and blue glass lenses. Over the years a decent amount of those lenses have disappeared. I don't even know the correct name of the light bars let alone those lenses....

    Can you educate me on the names I am missing and perhaps where (if) I can get replacements? I have attached a picture of one of the lenses I removed. They say Major Chicago Illinois

    Also they seem to have 150 watt Sylvania bulbs in them - I need to replace around 90 of them. Any particular recommends of type and maybe cheap places to get them?


    Thanks in advance and Happy Thanksgiving!
     

    Attached Files:

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  2. josh88

    josh88 Remarkably Tired. Fight Leukemia

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  3. DannyDepac

    DannyDepac Member

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  4. josh88

    josh88 Remarkably Tired. Fight Leukemia

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    Make sure they are dimmable (or buy a couple and see if you like how they dim beforehand) but I do know people using leds in strip lights like that.
     
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  5. Les

    Les Well-Known Member

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    Your best/cheapest option for roundels would probably be eBay. Might take a while to collect the amount you'll need, and expect to pay $4-8 each. Watch the size - they are/were made in various diameters: 4.5", 5 5/8", 8" and in different finishes (smooth, stippled, stripped/lenticular).

    I put "colored glass stage lens" in to eBay's search box and got several results just now. Using the term "Roundel" gets mixed results since most sellers have no idea what they're called.

    LED retrofit lamps can give various results... It depends mostly on how picky you are about dimming and intensity. What type of borderlights are these? Do they have an aluminum reflector and "A-lamp", or do they use Par or R shaped lamps with the roundels in metal frames?
     
    Last edited: Nov 22, 2018
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  6. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    Second all of this. If your hand is similar to mine, looks like you have the 5-5/8" variety--the most common size. Also, you PROBABLY can substitute HUB Electric Company for Major; Kopp Glass made them for both. I'd be more leary of unmarked ones, as the colors may not match exactly.

    As for the finish: generally, if you use clear lamps, you use Stippled rondels (like those you pictured); if frosted lamps, use smooth rondels. This "rule" may have been broken over the years by unknowing/uncaring custodians.

    You probably need 150W A21 lamps [edit: see below*], in either clear or frosted, readily available on Amazon for $5-7 each. Don't have to be Sylvania brand. What most people do is keep moving the burnouts to the ends until there's nothing left, or until they can afford to replace all of them, or at least all of the same color.

    *If it's these, whether from 1931 or later,
    [​IMG]
    you need 150W PS25 lamps. PS=Pear Shaped, 25=25/8=3-1/8" diameter at widest point.
    https://normanlamps.com/150ps25-cl.html $2.45 each. Such a deal!

    I'd try to find the purchasing agent for the school district and punt the task to them. Their regular bulb supplier can probably get a better deal. And you might get lucky and they'll come out of a general maintenance budget rather than "theater money."

    So they look like this, except longer?
    [​IMG]

    This?
    [​IMG]

    If there is even the remotest possibility of a lighting upgrade in the future, I'd spend the least amount possible on keeping these fixtures active. Don't get me wrong, I love them, they're a great down and dirty way of getting colored light on the stage, but $30K of LED striplights are orders of magnitude better.

    BTW, the proper term is compartmentalized striplight, borderlight, or (used only by olde-phartes) X-rays. (The CB wiki has issues with Xray, X-ray, Xrays, X-Rays.)

    One more thing: aside from dimming issues, you're probably not going to find LED replacements that will fit in your reflectors (designed for PS or "long-neck" bulbs) and without the reflector, there's no rondel holder. Also, I don't think there's an LED that's as bright as a 150W incandescent.
     
    Last edited: Nov 22, 2018
  7. JD

    JD Well-Known Member

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    LEDs are not a good option on this style of fixture as a direct replacement. One quirk of LEDs is that they don't last too long in an enclosed environment. Basically, the electronics and the emitters cook because there is no airflow, despite the fact that they don't throw much heat.
     
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  8. JohnD

    JohnD Well-Known Member Fight Leukemia

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    I wonder if the OP's borderlights are the new in 1931 Major patented Slip Rings? It was an interesting design, no retaining rings to lose but they didn't age well. They would eventually start binding up so brute force was required to slip them.
    Here is an older post about rondels:
    https://www.controlbooth.com/threads/rondel-colors.28848/
     
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  9. DannyDepac

    DannyDepac Member

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    Thank you - I have been checking and found a few options. They have what looks like the A Lamp. We have some with Gel films taped over them and they seem to work decently so if all else fails I'll try that. Thanks again
     
  10. DannyDepac

    DannyDepac Member

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    My school was built in 52 so I'm guessing they are a "slightly" updated version however they look the same as the catalog. They are DEFINITELY tough to open. I had never done it so it took me a good ten minutes to figure out how to remove the lens lol.
     
  11. DannyDepac

    DannyDepac Member

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    So we are slated for upgrades through a Bond that was passed however I'm not sure replacing these will make the cut. I don't want them to break butttttttt I wouldn't be upset if they did.
     
  12. Chris Pflieger

    Chris Pflieger Well-Known Member

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    Them are some nice nice lights - it'd be a shame if someones was break them so dat you'd have to get new led strips...

    The best, not the cheapest, solution would be to replace the complete fixtures with new LED strips, which run the range from cheap Chauvet DJ ones up to premo ChromaQ or ETC models.
     
  13. BillConnerFASTC

    BillConnerFASTC Well-Known Member

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    You wouldn't have to replace with strips. You could replace them with wash fixtures. My guess is an ETC ColorSource Par every 8' or so would do it. Around $1000 each all in. No rondels, no lamps to change, much lowered energy use (doesn't really amount to a lot but sounds good), less fire danger.
     
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  14. PaulP514

    PaulP514 Member

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    Danny, let me know if you need more information on the Chroma-Q Color Force II. It would definitely do a great job for that purpose with nice bright saturated colors and perfect blend.
     
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  15. JohnD

    JohnD Well-Known Member Fight Leukemia

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    As @BillConnerFASTC points out you don't have to replace with strips. Strip lights are batten hogs, not leaving space for other fixtures. Since the OP may have an upgrade in the near future there are several possibilities to consider. There are fixed beam spread LED pars like the ColorSource Par. There are also zoomable LED pars. Then there is the option for moving wash lights. There are several reasons to consider moving lights. They are moving lights you can use for flash and trash for a band concert. They can be easily refocused remotely without ladders, scaffolding or bringing in a batten (assuming a fly loft). You can even call it in, if you have the right app. ;)
     
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  16. DannyDepac

    DannyDepac Member

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    Hi I'm just curious - Would that saturate my stage? The current lights (when all working) Really color the scene - albeit only red white or blue.
     
  17. JohnD

    JohnD Well-Known Member Fight Leukemia

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