The marching band at my son's school needs lights for the practice
field. We've been renting lights for about $2600 for five weeks, not
including fuel for the generators. This is for two 4000 watt lights (4 x
We'd like to find an alternative, even if we have to spend three-four
times as much as five weeks of rentals cost. We don't actually need 8000
watts worth of light. We need lights for two hours a day, two days a
week. There is no electricity available at the practice field.
My idea is to purchase sixteen 4000 lumen 75W 12V HID flood lights, four
90AH deep cycle batteries, and eight 18' light towers. This would cost
about $4000. The batteries would probably need to be replaced every 3-4
I was looking for some other ideas on how to do this.
On Thursday, September 26, 2013 8:04:17 PM UTC-5, sms wrote:
el for the generators. This is for two 4000 watt lights (4 x 1000W bulbs).
We'd like to find an alternative, even if we have to spend three-four times
as much as five weeks of rentals cost. We don't actually need 8000 watts w
orth of light. We need lights for two hours a day, two days a week. There i
s no electricity available at the practice field. My idea is to purchase si
xteen 4000 lumen 75W 12V HID flood lights, four 90AH deep cycle batteries,
and eight 18' light towers. This would cost about $4000. The batteries woul
d probably need to be replaced every 3-4 years. I was looking for some othe
r ideas on how to do this.
Park automobiles/trucks in a circle around the practice field and use the c
With a good vehicle and maybe a trolling battery
in series with the starting battery, that might
work. 12 volt lights will need some hefty cables,
lot of amps. When I'm a bit more awake, I'll run
some numbers, and see how that works out.
Never know, might get by with two batteries instead.
Who can tell?
My ETQ generator, 1200 watts, is quiet enough I can
stand next to it, and have a conversation with it
running. Hondas are better than that.
Christopher A. Young
Learn about Jesus
On 9/26/2013 10:50 PM, Dean Hoffman > wrote:
They did that on one episode of MASH.
My gut sense is that the marine battery route might
work. Need to find someone who is competent to charge
them correctly. I've killed a marine battery by
leaving it on a Harbor Freight float charger, which
dried it out and it never came back to life.
I wonder if a couple halogen lamps from Harbor Freight,
and one or two small gasoline generators would do the
trick? Have the advantage of being backup power for
someone during the next power cut.
You're using generator and lights on towers -- so buy
Christopher A. Young
Learn about Jesus
On 9/26/2013 9:37 PM, firstname.lastname@example.org wrote:
Get every member of the band and their families to get a free LED
flashlight from Harbor Freight, dismantle the lights, put the LED
and reflector assemblies in several frames, wire them up and power
them off a few car batteries. ^_^
The old spotlights for the theaters were arc lights as were movie
projectors. The LED's are bright enough for theater spotlights now but I
wonder if some projectors are using LED's as a light source. I seem to
recall movie theaters getting movies in digital format now so I wonder
what those projectors are like? Oh well, a backpack for the power supply
and an arc light tied to each kid's head might work. ^_^
I went to a high-school football game a few weeks ago and I'm thinking they
had an LED scoreboard. I'd never seen a scoreboard that bright before.
As it got darker, it got to a point where the lights were so bright that it
was hard to see the permanent writing on the scoreboard (Quarter, Down,
Guest, etc.) The lights were so bright that they drowned out the white
that are illuminated with led strips. a single strip about 6' long
throws out an incredible amount of light, that can be seen for 1/2 mile
or so and downcasts a large area of light. it uses multicolor leds
(red/green/blue) each of which can be turned on/off to cast different
colors, and white-ish when all are on. it has to need less power
quick google searches
On Fri, 27 Sep 2013 10:58:28 -0500, The Daring Dufas
Digital theater projectors use the TI DLP technology. Basically, they
shine a light at an array of micro-machines mirrors which direct the
light either to the screen or somewhere it can be absorbed.
I don't believe LEDs aren't bright enough for theaters, though LED
sources are used for smaller projection monitors. I imagine theaters
use some sort of HID light sources.
On 9/27/2013 6:40 PM, email@example.com wrote:
Yea, I remember when the TI DLP tech was used in a lot of TV's and was a
lot more preferable to the plasma sets because the bulb could be
replaced in the DLP set if it burned out but if a plasma set goes bad,
you're screwed. Now we have an LED-LCD set at the house replacing a
wonderful old 57" Sony rear projection TV set that had an expensive
failure. The repair to the Sony would cost more than what we paid for
the new 55" LCD-LED set and I can pick up the new set by myself. ^_^
On 9/27/2013 10:04 PM, firstname.lastname@example.org wrote:
It's my understanding that the plasma TV sets had a superior picture to
the earlier LCD sets but if the plasma tube died, it would be more
expensive to replace it than the price of the same model TV which would
invariably fall to on a clearance sale as the newer models arrived. At
least the florescent light can be replaced in an LCD set if it goes
dark. I remember replacing dozens of 25" color CRT's with a rebuilt
picture tube back in the good old days and there was even a local
company rebuilding the darn things and a friend of mine ran a shop that
rebuilt mechanical TV tuners. It's hard to find a TV shop these days as
the sets have become less expensive which cracks me up since I ran a TV
shop back in the 1970's where we were selling a Sanyo 19" color CRT
mechanical tuner set for $300.00 and people were buying us out on a
regular basis. ^_^
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