Bret4207
At the casting bench in the sky. RIP Bret.
Not yet in NYS, but soon...
LED overhead light
- Thread starter Tomme boy
- Start date
Ha, gotcha beat. Design of a 'border patrol' helo light, 1M Lumen focused arc lamp. During testing the paint on the wall @ 50 yds got scorched. Big directional light at the aft bottom of the choppers you see in news vid. Tried to give them a better human interface control but LE wouldn't go for it, training change not acceptable.
Did a LED replacement main gear taxi light for 787-8. Fun project. Change from a wire screen protected 100W flood to an 'explosion' proof box with LEDs. Brake fluid with 10% H20 added is very flammable, at 400F. Vs dry @ 800F. Wonder what the unlimited class LeMans guys use 90 MPH in the turns and 270 in the straight away. Even with EMF braking, stuff gets really HOT. Aircraft landing is about the same but only used temporarily. Yup, tires don't last many landings either, but they do have rotators to get the tire up to speed. Enough trivia.
Did a LED replacement main gear taxi light for 787-8. Fun project. Change from a wire screen protected 100W flood to an 'explosion' proof box with LEDs. Brake fluid with 10% H20 added is very flammable, at 400F. Vs dry @ 800F. Wonder what the unlimited class LeMans guys use 90 MPH in the turns and 270 in the straight away. Even with EMF braking, stuff gets really HOT. Aircraft landing is about the same but only used temporarily. Yup, tires don't last many landings either, but they do have rotators to get the tire up to speed. Enough trivia.
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Snakeoil
Well-Known Member
Okay. Point taken.
Back to LED lighting for just a moment,...
Yesterday, I had to D/T two holes in a new LEE 6C for set screws for the two sprue-plate screws.
I had a really tough time reading the numbers on my drills and taps - like someone came and wiped them all clean of any information at all.
I struggled for a while, with bifocals, without bifocals, asked my wide to put a big magnifying glass on her shopping list because I was going blind!
FINALLY, I stepped out into normal daylight and was able to make out "10-32" on the two taps and "28" on the twist-drill I had in my hand.
Went back inside and could NOT read them, even though I now KNEW what each one said. I thought it was dimness, but I have a drafting light on one bench that I pull down right over something I really need to see - "100W" equivalent, and I still could NOT read those figures on those tools. I don't know if it was the LED lights I'm using, but I was able to read them just fine in diffuse daylight.
I know I could have grabbed a mic' and made short work of the size confirmation, but that wasn't so much the point when I thought I was suddenly much more blind than I thought I was.
Yesterday, I had to D/T two holes in a new LEE 6C for set screws for the two sprue-plate screws.
I had a really tough time reading the numbers on my drills and taps - like someone came and wiped them all clean of any information at all.
I struggled for a while, with bifocals, without bifocals, asked my wide to put a big magnifying glass on her shopping list because I was going blind!
FINALLY, I stepped out into normal daylight and was able to make out "10-32" on the two taps and "28" on the twist-drill I had in my hand.
Went back inside and could NOT read them, even though I now KNEW what each one said. I thought it was dimness, but I have a drafting light on one bench that I pull down right over something I really need to see - "100W" equivalent, and I still could NOT read those figures on those tools. I don't know if it was the LED lights I'm using, but I was able to read them just fine in diffuse daylight.
I know I could have grabbed a mic' and made short work of the size confirmation, but that wasn't so much the point when I thought I was suddenly much more blind than I thought I was.
Petrol & Powder
Well-Known Member
Has happened to me many times.
The type of light is often more critical than the amount of light.
I keep a cheap clamp on type lamp (the ones with the aluminum reflector and the spring clamp bracket) over my bench for those occasions. It has a 40 watt incandescent bulb in it. You can still get incandescaent appliance bulbs in 40 watt.
Same holds true for reading lamps, I like the old 60 watt frosted bulbs for those.
Often the best solution is to just walk outside and use that old fashioned sunlight.
L Ross
Well-Known Member
Especially when you are trying to get a serial number tucked away in some location that you'd have to to stand on your head to see. Stick the phone in there take a half dozen pics, see if one is usable, blow it up and go.
richhodg66
Well-Known Member
I need to go by Harbor Freight and get one of these, the light in my shop sucks.
This has become SOP for reading electric motor nameplates these days. Per Code, the nameplate is supposed to be positioned such that it can be read, but I think there's a challenge to the mechanical designers in that imperative, such that they always seem to find a way to position the motor so that it is as inaccessible as possible.
Back in the day, a telescoping mirror, small flashlight and the ability to read backwards, through a conglomeration of grease and dirt, while hanging upside down was the trick. Now, guys just stick their phones "in there" and snap a pic.
Charles Graff
Moderator Emeritus
The church I attend, have a very high cathedral ceiling and it takes a scaffold or a fire ladder to change light bulbs. A couple of years some body got the idea to change them all to LEDs. That lasted two weeks as many folks fussed about the high level of light and the glare off the glass, woodwork and white walls. I was not one of the fussers.
Sounds much like they chose the wrong bulbs. They make nearly as many different LED bulbs these days as they do incandescent including dimmable bulbs.
Yep!
I just dug out a "60W" for my desk lamp, from the stash that I started when they were selling cheaply. I wasn't paying attention when I bough that pack because the den now has all the warmth and ambiance of a city morgue.
Bret4207
At the casting bench in the sky. RIP Bret.
We have a brand new church here, amazingly!, and it has a pretty high cathedral ceiling also. They installed a mix of warmer and cooler lights, it's pretty decent lighting. Looks a little goofy, but it works with the cooler white lights up high and the warmer, yellower lights down lower.
blackthorn
Active Member
I use a detached, small (12'x16') fully insulated building as my loading area. It was/is lit by 3,- 4' standard florescent fixtures. These give great (shadow-less) light but they are HOT in the summer. I got 2,- 4' led fixtures that plug in and these give similar (but brighter) lighting and do not produce the heat. The original fixtures work well for winter use, allowing me to use a lower setting on the small, electric/oil heater.
I'm pleased to report that all of my 4 foot fluorescent lighting units are now in the dumpster. I've totally switched over to LED. Life expectancy of the LED bulbs is 22 years. Try that with fluorescent lighting. 65 watts of pure bright white light using only 9 watts of energy per bulb.
Wonderful !!!!!!!!
Won't get much simpler than this :
Wonderful !!!!!!!!
Won't get much simpler than this :
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