Re: Quad headlight design project grinds to a halt ..... again.
Hi all,
Despite the name of the thread, things are coming along nicely, aluminium is such a great material to work with, so if anybody else wants to have a go at this, I can highly recommend 1050 grade marine aluminium T:
I'm hoping to do a fitting with the new templates at the weekend. I'm also planning on aligning the headlight units using lazers.
Should be fun
In previous articles I've used my inimitable logic to try and explain advantages
or disadvantages of various technologies used in automotive lighting. You've all probably guessed by now that I'm not a great fan of HID headlights I:
So I was looking for some sort of 'confirmation' of sorts from a reliable source. Have a quick look at the quotes below, I'm sure you'll find them quite interesting. Manufacturers will not let on that HID is overstated as they are in the business of selling a product. But there are certain things the general public aught to know.
In the hands of an independent like Daniel Stern, you get the full lowdown. Like it not, you'll never be able to ignore your headlights again.
Disadvantages of HID
There are physiological disadvantages to HID auto headlamps that do not exist with glowing-filament lamps.
Probably the biggest issue is HID headlamps' significantly worse color rendering index (CRI), which is in the high-60s to low-70s range. Halogen headlamps' CRI tends to be around 90 to 97 or so. In English, this means that the human eye's color perception and differentiation is much, much better under halogen light than under the light produced by automotive HID headlamps.
So it wasn't just my opinion, tungsten lighting is much better at night......
As an illustration of the fact that color temperature does not automatically bear on headlamp quality, consider this: The selective-yellow headlamps required for so many decades in France were shown, in a couple of studies, to improve (or at least not to reduce) driver performance at night.
If you want to read the entire article, you can find it here >
http://www.danielsternlighting.com/tech/bulbs/Hid/disadvantages/disadvantages.html
Anyway ..... this update has served it's purpose ........ at least we wont fall off the bottom of the page !
***
Quick question to admin ..... is it possible to change the name of the thread ? ***
***
To .....
***
"Quad Headlight Design Project ........ Update" ***
Many Thanks
TURK