Sylvania 175watt Clear Girder Frame Mercury Vapor Light Bulb

Sylvania 175 watt Clear Girder Frame Mercury Vapor Light Bulb
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[@2StrokeDriptroit]

Fact be known-the Sylvania Girder frame was NOT because of lead-in wire/molybdenum strap weld issues, since all other makes had this sorted for a long time by then. The REAL reason was bean counters at Sylvania wanting to cut material and assembly costs. The crappy thin, cheap sheet metal (steel) they used was dirt cheap. These ARE cool lamps, but utter examples of the decline of quality in America and of the country. These cheap stamped and pressed about 30 gauge frames turned out to not be good, ESPECIALLY in the 700 watt BT-46 and 1000 watt BT-56 lamps, as the 2 vertical pieces that flank the arc tube would distort from arc tube heat, especially running horizontal. It could throw off arc tube alignment and cause pinch seal failures. Add it to the tiny electrodes that always fail fast and the bad arc tube blackening issues they had, and these weren’t well liked lamps in the field. But this was done for ONE reason-bean-counter cost cutting! It damn near killed the HID division, until they went to the hybrid wire/stamped frames in the ones we call “clear banders”, and went to bigger electrodes for longer life, though the bad blackening issues remained sadly. Cheers man!!

[@Parrot175]

Thanks as always for the information! Stamping a frame out of one piece of metal definitely would've saved costs in creating the frames, I can totally see that. I shared the weld issue story as I remember reading that somewhere online. I can also see how the warping of the frame could cause big issues on those larger lamps, you can for sure hear it in action with the noise in the video. Thanks again!

[@crazy-es8tr]

the ticking coming from the lamp as it warms up sorta sounds like a pre heat starter which i think is pretty neat

[@EugeneWilliams-m9p]

Not gonna lie the Arc tube lo😮almost like one out of a a metal halide bulb

[@bertlambert3720]

I love the sound of the tinging 175 watt mercury vapor light bulb. That was very cool😂

[@linksadude1]

Man I love mercury vapor bulbs. Out of the bulbs I have, I have a metal halide bulb with a similar frame inside. Sadly I do not have a clear MV bulb, all the ones I have are coated. Another great video.

[@treahblade]

Were these the bulbs that were put into the old street lights? The ones hollywood loves to replicate in movies these days because of their wierd light? I think im too young to remember them in street lights as all I ever remember are the sodium vapor lights that give off the orange glow.

[@robertmailhos8159]

Another green hew video on this Mercury bulb parrot cool beans on this old school Merc light bulb

[@johnjunior-70]

I loved the word beans and it really is the color of the bean!😉

[@robertmailhos8159]

@@johnjunior-70 you got that right @johnjunior-70

[@LawpickingLocksmith]

No spectrometer yet?

[@johnjunior-70]

For green and monochromatic light it is bright enough! as much as a 70W HPS! Do you like electronic ballasts?

[@Parrot175]

I have some electric ballasted HID fixtures and they do work well, you just don't see many of them around.

[@johnjunior-70]

Yes, they were not used that much, but they can save energy without wasting

[@worldwidehidcollectorusa3519]

From what I have known, most electronically ballasted HID fixtures would often be used in indoor environments such as shopping malls and department stores where perceived flicker was undesirable and in applications where the color consistency of high CRI ceramic metal halide lamps was very important.