The BIG Lights

LightSward

Flashlight Enthusiast
Joined
Feb 1, 2009
Messages
1,164
Location
Portland, Oregon
Another excellent new entry from Lightsward: 50 inch Reflector "Monster Light"

I am am honored to have the 50 inch Monster added to the 'BIG Lights' thread. I hope everyone gets as much out of this big light, as the 24 inch scratch built & designed reflector thread did. I have a list of experiments I'll be doing with this light!:thinking::candle::thumbsup::naughty::cool:
 

Patriot

Flashaholic
Joined
Feb 13, 2007
Messages
11,254
Location
Arizona
Thanks for the innovation Lightsward. I've been reading your threads and it's all great stuff.
 

Kuryakin

Enlightened
Joined
Oct 12, 2009
Messages
206
Location
Delaware
OK, so far, no one has shown a particularly bright light here. Now, let me show you what bright REALLY is. See:
http://victorysearchlights.com/searchlight.htm
And the video of the one we're operating.
http://www.youtube.com/watch?v=BOq1lwMXoow
http://www.youtube.com/watch?v=1n3K6qAWsdY&feature=related
http://www.youtube.com/watch?v=CpZfu-npynQ&feature=related
800,000,000 beam candlepower, 2,100,000 lumen carbon arc, 14,000 watts. Has its own 90 VDC generator powered by a 320 CID Hercules 6 cylinder engine.

heh heh heh...
 

BVH

Flashaholic
Joined
Sep 25, 2004
Messages
7,023
Location
CentCalCoast
OK, so far, no one has shown a particularly bright light here. Now, let me show you what bright REALLY is. See:
http://victorysearchlights.com/searchlight.htm
And the video of the one we're operating.
http://www.youtube.com/watch?v=BOq1lwMXoow
http://www.youtube.com/watch?v=1n3K6qAWsdY&feature=related
http://www.youtube.com/watch?v=CpZfu-npynQ&feature=related
800,000,000 beam candlepower, 2,100,000 lumen carbon arc, 14,000 watts. Has its own 90 VDC generator powered by a 320 CID Hercules 6 cylinder engine.

heh heh heh...

What about #11 on the list that appears in the 1st post? Also, 78 Volts x's 150 Amps = 11,700 Watts. And I still don't buy your 175 Lumens per Watt guess. What reference material are you citing for this figure?
 
Last edited:

Kuryakin

Enlightened
Joined
Oct 12, 2009
Messages
206
Location
Delaware
Ooops, missed that. Although, it's generally considered that Sperrys are slightly brighter than GEs, due to the control scheme and the GEs get a lot more rod holder brush heating than the Sperrys, but it's a niggling difference.

The 2,100,000 came from a phone conversation from someone who has the Sperry operation and service manuals. And, the xenon arc conversions (which require line power for the conversion) also put out 2,100,000 lumens, albeit at higher power, 18KW. Looking at the two, the only notable difference is the color temperature, the carbon arc being a bit warmer.

The beam power specs come from:
http://www.geocities.com/bobz299/searchlight1.htm
[SIZE=+2]Carbon Arc Searchlight Facts:[/SIZE] Searchlights were produced for the military from 1932 to 1944 by Sperry and General Electric at a cost of $60,000 each!
Light Source: 1 inch Carbon Arc (no light bulb!)
Candle Power: 800,000,000 (800 million)
Effective Beam length: 5.6 miles
Effective Beam visibility: 28~35 miles
Glass Weight Totals: 75 lbs
Brass Rhodium Coated Mirror: 180 lbs GENERATOR:
Generator Power: 15 KWV nominal - 16.7 KWV max. (15,000~16,700 watts D.C.)
Powered By: In line 6 cyl. "Hercules" Flathead Engine
Generator Engine Fuel: Gasoline (can also be run using Kerosene or Gasohol) 26 gallons
Generator Fuel Consumption: 2.6 Gal per hour
Combined Weight: 6,000 pounds (3 tons, or the weight of 3 Ford Mustangs combined!)
Light Source
The Beam is made by 2 carbon rods, one positive and one negative, arching within the focal point of a 60 inch
parabolic mirror. The actual light source is only 1 inch in diameter before it is magnified by the mirror.. As the rods "burn" they are automatically fed into the arc. The rods last approximately 2 hours and then are replaced. The flame that is visible during the lights operation, is not actually the source of the light, rather, it is a by-product, produced as a result of the electricity arching between the 2 rods. The flame is the rod slowly burning away as it is fed into the light. The arc draws 150 amps continuously at 78 volts DC, and burns at over 3,000 degrees Fahrenheit. The power is supplied by the D.C. generator which was designed specifically for this purpose.


What about #11 on the list that appears in the 1st post? Also, 78 Volts x's 150 Amps = 11,700 Watts. And I still don't buy your 175 Lumens per Watt guess. What reference material are you citing for this figure?
 

DM51

Flashaholic
Joined
Oct 31, 2006
Messages
13,338
Location
Borg cube #51
I've been thinking about putting a couple more in here, including that one and also Lightsward's amazing homemade reflectors. When i get some time, I'll do it - please jog my memory in a week or 2 if I haven't done it.
 

bourza

Newly Enlightened
Joined
Dec 30, 2009
Messages
35
Location
Victoria, Australia
Are the torches ranked in the list i.e. top 20 in order?

And they are BIG lights, what about making the thread split for tube (inline) versus box?

Would love to see the toches ranked in order, to be easily see which is the most powerfull!


Drooling now.
 

DM51

Flashaholic
Joined
Oct 31, 2006
Messages
13,338
Location
Borg cube #51
They're not ranked in any particular order, but new threads are added to the foot of the list. Reading the threads will give you an idea of their output, but it's really about more than just raw output.
 

overdog

Enlightened
Joined
Apr 30, 2009
Messages
345
Location
Germany
...I visited this forum to find some led flashlight, that is brighter than most achievable handhold led flashlight... - just to show my girlfriend and her dog, when we went out for a dogwalk at night, that no one is interested in the dark in the woods far far away to eat her dog.. the "Fat Star" helped a little bit... I have got all my information and inspiration about building lights from CPF - but she is still afraid of the dark, now I am looking for some new ideas to go further and build brighter lights- ... any ideas, how to?
best regards,
Steffen
:wave:
 
Top