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Coughtrie Glasgow bulkhead

Coughtrie Glasgow bulkhead

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Here it is switched off

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Filename:image~88.jpg
Album name:Flurofan96 / Incandescent lighting & bulbs
Keywords:Lanterns
File Size:713 KB
Date added:Nov 09, 2014
Dimensions:2050 x 1531 pixels
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URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-100465
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Mercurylamps
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240V 50Hz


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May 01, 2015 at 03:55 PM Author: Mercurylamps
I like the bullet shape of this bulkhead. Looks to be nuclear bomb proof.
Beta 5
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Feb 24, 2017 at 04:08 PM Author: Beta 5
Nice bulkhead i have one of the same
Being the SP.6 they are actually for 60w lamps maximum but being metal and glass they should take the heat of a 100w

Thorn Beta 5 35W SOX 1965 - 2008. Top entry/Side entry

Flurofan96
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Feb 24, 2017 at 04:14 PM Author: Flurofan96
I think this fixture has a 60W lamp but I think my dad 30 years ago must have put a 100W lamp and still now I have been very unsuccessful into accessing to the lamp and see what make/wattage/year of production it is

Mercurylamps, It indeed does look like a bullet

I will give LEDisease a taste of my shoe

Flurofan96
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Apr 26, 2018 at 01:28 PM Author: Flurofan96
I am now thinking to find a 160W or similar SBMV lamp with a BC base to use in this Coughtrie fixture as I'd love to see it with an HID glow

I will give LEDisease a taste of my shoe

sox35
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Mainly the electrical side of things


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Apr 26, 2018 at 01:33 PM Author: sox35

I am now thinking to find a 160W or similar SBMV lamp with a BC base to use in this Coughtrie fixture as I'd love to see it with an HID glow

SBMV's don't tend to run all that well horizontally. I'd hazard a guess it might be a tad too big to fit in this anyway. Also, SBMV's get HOT..!!

You might have better luck with say a 50W MBF, although you'd obviously have to change the lampholder and put a ballast box up.

Ria in Aberdeen
It'll be all right in the end, and if it isn't all right, it isn't the end  Smiley

Flurofan96
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Apr 26, 2018 at 01:39 PM Author: Flurofan96
What happens if they are ran horizontally? Do they struggle to start up or does the lamp have its life shortened

I will give LEDisease a taste of my shoe

sox35
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Apr 26, 2018 at 01:44 PM Author: sox35

What happens if they are ran horizontally? Do they struggle to start up or does the lamp have its life shortened

I'm not sure, I think it's to do with the position of the filament in relation to the arc tube. They're designed to run base up, although most will run base down without too many problems. I think it would be a tight fit to get one in there anyway.

Ria in Aberdeen
It'll be all right in the end, and if it isn't all right, it isn't the end  Smiley

Keiron
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Apr 26, 2018 at 04:03 PM Author: Keiron
Good quality fittings, I have one of these that I must get round to cleaning up, it's been used for loads of short term out door things over the last 15 years since I got it.

Mazda lamps stay brighter longer :-)

Flurofan96
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Apr 26, 2018 at 04:47 PM Author: Flurofan96
This fixture has been for like more than 30 years and last year I changed its former 150W lamp for a STATUS 150W as I wanted to preseve the OSRAM Extralite lamp in my collection as I'd rather ruin a cheap chinese lamp

I will give LEDisease a taste of my shoe

Keiron
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Apr 26, 2018 at 05:03 PM Author: Keiron
Must be one of these that was in yours,
https://www.lighting-gallery.net/gallery/displayimage.php?pos=-116427
They are rated maximum 100 watts but it shows the quality because they withstand the heat of 150 watt.
Mine has a CFL lamp in but I can't remember the brand, it was used due to being cooler than incandescent when we used it on a camping trip.

Mazda lamps stay brighter longer :-)

Flurofan96
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Apr 26, 2018 at 05:46 PM Author: Flurofan96
Yes exactly but sadly the packaging must have been binned by my dad 30 years ago and I wasn't born at the time sadly I really love the packaging of these OSRAM lamps

Then it should withstand the heat of a 100 SBMV lamp if it can cope with the extra 50W worth of heat exceeding from the max rating Also you know we had this Siberian cold air blast during March, if I was not having to be at London for uni work and so, I would have experimented with a Philips SLE 16W CFL and see how it will warm up, my logic will say it will be extremely pink for a long time always wanted to experiment with CFLS and fluoresant tubes with extreme cold weather!! I was too busy working on my violin performance and enjoying drinks with my close uni friends at the pubs

I will give LEDisease a taste of my shoe

Keiron
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Apr 26, 2018 at 05:52 PM Author: Keiron
I noticed the CFL in mine was very slow starting in cold conditions but eventually got to full brightness.

Mazda lamps stay brighter longer :-)

Mercurylamps
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240V 50Hz


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Apr 27, 2018 at 12:28 AM Author: Mercurylamps
Interesting, I was under the impression that SBMV lamps could be run horizontal. Guess not.
AngryHorse
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Rich


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Apr 27, 2018 at 12:35 AM Author: AngryHorse
I think some ratings can, (the 250s and 500s), but if you take a 160watt MBTF, let it run up to full output, then slowly turn it on its side it goes out!!!!
I seem to remember James explaining why once, but I can`t remember where it was?

Current: UK 230V, 50Hz
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Mercurylamps
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Apr 27, 2018 at 01:10 AM Author: Mercurylamps
That is curious indeed. I wonder if there is a thermal cutout or something that may be sensitive to orientation.




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Apr 27, 2018 at 04:54 AM Author:
It may well be on appearance that a fitting like this will run ok on a higher wattage than it is rated for by thinking it is metal and glass but you have to consider that if it is outdoors like this and rain hits it then it could suffer sever thermal shock to the glass and the fitting could be ruined.
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Apr 27, 2018 at 05:13 AM Author: Beta 5
Coughtrie bulkheads have the max wattage in the model number, eg. BB.15 = 150w max, SP.6 = 60w max, CPS.10 and PE.10 = 100w max.
I use 60w in my BB.15, and that gets quite hot, doesn't see direct rain though, as its sheltered by the roof over hang, and its 90w within the max rating of 150w so should be fine anyway.
One of those SL-E lamps may be better in this than a normal CFL, as they have an outer envelope to keep heat in with the tubes.

Thorn Beta 5 35W SOX 1965 - 2008. Top entry/Side entry

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