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Squeaky clean grooves.

Squeaky clean grooves.

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These things were absolutely grody when I first saved them... Mouse crap, hair, dust, spray paint, rust stains and unknown substances.... They took hours to clean.. I used a combination of pinesol, Windex, rubbing alcohol, and axe body wash.

I only cleaned the functional tubes as I didn't feel like wasting time on the dead ones today. Maybe one day I'll clean the dead ones but for now they'll be stashed in a closet somewhere.

What is the manufacturing date of the second tube from the left? That is the only tube that hasn't been dated yet...

PSX_20190916_223917.jpg 20190908_214437_HDR.jpg IMG_20190908_194700.jpg PSX_20190908_020351.jpg

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Filename:IMG_20190908_194700.jpg
Album name:HomeBrewLamps / FLUORESCENT
Keywords:Lamps
File Size:452 KB
Date added:Sep 08, 2019
Dimensions:1848 x 2464 pixels
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Date Time:2019:09:08 19:47:00
DateTime Original:2019:09:08 19:47:00
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Exposure Time:41664/1000000 sec
FNumber:f 2.2
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Focal length:3.5 mm
ISO:50
Make:LG Electronics
Model:LG-Q710AL
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fluorescent lover 40
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Westinghouse OV-25s at sunset.


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Sep 08, 2019 at 06:04 PM Author: fluorescent lover 40
2nd quarter of 1964 for the lamp you're referring to.

Good quality things are awesome. Cheaply made things are not.

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SodiumVapor 105843202020668111118 UCpGClK_9OH8N4QkD1fp-jNw majorpayne1226 187567902@N04/
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Sep 08, 2019 at 07:54 PM Author: HomeBrewLamps
Thank you

~Owen

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Zack


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Sep 08, 2019 at 08:09 PM Author: Fluorescent05
Nice job!

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GoL
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Sep 08, 2019 at 08:27 PM Author: joseph_125
Nice and clean!
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zzz


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Sep 08, 2019 at 08:40 PM Author: xmaslightguy
They look great now

If it were me, I wouldn't even waste time cleaning the dead ones, since I'd simply be getting rid of them.

Its All For The Christmas Lights...
And A Good Summer Thunderstorm!

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Sep 08, 2019 at 08:46 PM Author: wide-lite 1000
Clean is good and with the products you used they probably smell good to !

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

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Sep 08, 2019 at 08:46 PM Author: HomeBrewLamps

They look great now

If it were me, I wouldn't even waste time cleaning the dead ones, since I'd simply be getting rid of them.

Thanks!


I figure one day I may hand them off to someone like vintage fluorescent who appreciates dead tubes...

To be fair one of the dead ones is quite neat looking with its greened out phosphors

~Owen

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Sep 08, 2019 at 08:48 PM Author: HomeBrewLamps

Clean is good and with the products you used they probably smell good to !

They do lol! Every time I turn them on they radiate not only light but the smell of pine and axe

~Owen

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Sep 10, 2019 at 11:15 AM Author:

They do lol! Every time I turn them on they radiate not only light but the smell of pine and axe

These made perfect street lights until the mercury vapor overtook them. Short lived but bright as heck.
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Sep 10, 2019 at 12:17 PM Author: HomeBrewLamps
Why did mercury over take them? The lumens per watt rating is pretty good on these.

~Owen

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Sep 10, 2019 at 12:19 PM Author: Fluorescent05

Why did mercury over take them? The lumens per watt rating is pretty good on these.

I think they were more expensive than mercury vapor lights.

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Sep 10, 2019 at 01:42 PM Author: Lightingguy1994
I think its because of a combination of things. These dont last as long as HID so require relamping more often. At EOL the fixtures are probably left that way for months so the ballasts die too and its more pricy for the bulbs and ballasts as well as the time the crews spend on each light. Especially in fixtures that have 2-3 pairs of bulbs with each set of 2 in series

Mercury vapor on the other hand lasts longer and doesnt kill the ballast if left EOL for extended time. Also it's much faster and easier for the crew to relamp a single screw-in style bulb saving costs in labour.

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jonathon.graves johng917 GeorgiaJohn
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Sep 10, 2019 at 02:36 PM Author: DieselNut
I have those 6 lamp PowerGroove fixtures and they have two ballasts that run three lamps each in series. One loose connection or dead tube will make that set of three not work.

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

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Sep 10, 2019 at 03:52 PM Author: wide-lite 1000
You also must factor in that fluorescent lamps of any type don't particularly like cold weather and the ballasts don't appreciate the heat either. 2 things that EVERY outdoor lighting fixture has to deal with on a regular basis.

Collector,Hoarder,Pack-rat! Clear mercury Rules!!

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jonathon.graves johng917 GeorgiaJohn
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Sep 10, 2019 at 06:25 PM Author: DieselNut
Powergroove/VHO are good for -20F.

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

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Sep 10, 2019 at 06:42 PM Author: Lightingguy1994
Yes tolerance to cold temps is a must, especially here in the north where we can get -40 in the winter. The HPS streetlight on my street that normally cycles regularly does not cycle when its that cold

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T12


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Sep 10, 2019 at 06:48 PM Author: veryhighonoutput
T10 jacketed works the balls under 20 degrees

T12/ t17 there's a reason they made heavy magnetic ballasts

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Sep 10, 2019 at 08:45 PM Author: joseph_125
I believe HO will also start at -20F too as long as you're not using the energy saver ones.
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Sep 11, 2019 at 05:34 PM Author: veryhighonoutput
I know they will start under -20 degrees but the question is will it become full brightness? Especially when windy. HO seems to stirate and flicker the whole time when real cold vho gets a dim spot in the middle. Powergrooves dont get to proper temp and can be a little dim especially when has good hours on them. T10j has no issues

T12/ t17 there's a reason they made heavy magnetic ballasts

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Sep 11, 2019 at 08:00 PM Author: xmaslightguy
I've as a test fired up and ran F96T12-HO 's in the negative mid-teens, and yes, they start fine but won't reach full brightness (especially if there is any bit of a breeze). Haven't tried VHO, but I suspect results would be the same...
Maybe I'll have to try it with a F48 VHO sometime (but I personally won't risk subjecting a PG to that sort of abuse)

Its All For The Christmas Lights...
And A Good Summer Thunderstorm!

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Sep 11, 2019 at 09:11 PM Author: wide-lite 1000
I don't remember where but I read somewhere that the fluorescent streetlights were known for heat related ballast failures and low light output in cold weather.

I will say however that I saw a parking lot lit with 4 lamp , 6' fluorescent fixtures last spring and I was surprised at how even and bright the light was.

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Collector,Hoarder,Pack-rat! Clear mercury Rules!!

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Sep 11, 2019 at 10:27 PM Author: joseph_125
I should go visit one of the parking lots here that still have these big fluorescent streetlights in use. Bit curious now to see what fixtures and lamps they actually have in them. Yeah all of the fluorescent installs I've seen at night seem to be pretty even and bright.
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My idol is Mylene Farmer, deal with it.


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Apr 21, 2020 at 03:32 AM Author: vytautas_lamps
here's a random question: were powergroove made for preheat circuits with bi-pin endcaps or just rapidstart with the pluggy pluggy endcaps?

New lighting technologies is a pity fest everywhere you look. From LEDs that last only for two months, to a never-ending global starvation of t8 fluorescent tubes.
We shall reinforce ourselves with good old full mercury t12s and HIDs made to surpass one's life, and give them all the middle finger ;

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Apr 21, 2020 at 03:45 AM Author: HomeBrewLamps
I haven't heard of bi-pin power grooves but that'd be neat to see.

~Owen

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Apr 21, 2020 at 10:05 PM Author: joseph_125
I wonder if the Power groove demonstrator lamp was a bi pin lamp.
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Apr 22, 2020 at 04:53 AM Author: veryhighonoutput
Aren't they really bi pin anyway they just press in a plastic connector to make it rdc? It be cool if there was a mogul bi pin version for f90t17 preheat!

T12/ t17 there's a reason they made heavy magnetic ballasts

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Westinghouse Lifeguard H38JA-100-DX BT-25!


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Apr 22, 2020 at 08:16 AM Author: HPS_250
Very nice and clean!

I like all kinds of lighting and electrical, except LED.
- Vintage and rare lamp collector
- HID and incandescent lamp collector
Power company: SCE (Southern California Edison) 120V, 60HZ
Incandescent, fluorescent, and HID lamps forever!
Proudly suffering from Westinghouse Lifeguard disease!

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Apr 22, 2020 at 09:41 AM Author: Jovan
Tubes look like new.Great job.
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Apr 22, 2020 at 10:40 AM Author: Ugly1
The LLD(Lamp Lumen Depreciation) with Power Groove lamps was also a factor in favor of Mercury Vapor lamps.
The GE lamp catalog from 1968 shows the approximate initial lumens of the F96PG17/CW lamp as 15,500 and the rated life as 9,000 hours. Not bad until you look at the footnote. The note says the Economic life is from 5,000
to 7,500 hours depending on conditions. In the column listing lumens at 3,000 hours the lamp is down to 12,400
lumens, a twenty per cent loss in output. If you are trying to maintain a certain level of lighting on your streets, you are forced to group relamp two or four realatively expensive lamps just about each year.
In the same catalog, the rating of a 1000 watt H-36 DX mercury lamp is initial lumens of 58,500, and life of 24,000 hours. But again you have to look at the foot notes. The Economic life of the lamp is considered to be 16,000 hours. The mean lumen rating is then considered to be the light output at 8,000 hours, which is listed as
38,500 lumens, almost a 35 percent drop. But the mercury lamp still had the advantage of group replacement
schedule of over two years, a single small lamp to be replaced, one ballast, and a much smaller luminaire to be cleaned.
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