I never got into the technical specs of LEDs so I'll start now.

Brightness- when I go to sites like oznium.com they give brightness rated in mcd. What does this stand for?

Viewing range- what is an acceptable viewing range for the street?

If it helps, I plan on putting superbrights in the air ducts of my f4i so my signal can be seen from the front easily. Would 20 degrees be an acceptable angle?
And I want no excuses from people that they aren't bright enough...so what's a good mcd value?

 

I put LED's in the Air Ducts as Turn signals/running lights.
I used the Side mounted LED strips you can find at like walmart and autozone, etc.
Kind of like these ones:
Alpena

 

Yeah, I've seen yours and I like how it looks, but I'm trying to come up with an original design and I sort of have one in mind. That's why I need to buy individual LEDs

 

digikey.com

if you have any questions getting it set up feel free to pm me. (electrical engineer, led brightness was never a concern of mine though)

so no i do not know what MCD is. sorry

 

Light intensity is measured in units known as candelas. This used to be called candlepower, and one candlepower was the amount of light shining one foot away from a candle. If you cast one candela on one square foot of area, you now have one lumen - the root of the term luminous. Your units (mcd) are millicandelas.

The relationship between luminous flux, luminous intensity, and beam angle means is that focusing a given LED into a tighter beam (decreasing the beam angle) will increase its luminous intensity (brightness) without actually increasing the luminous flux (amount of light) it puts out. Keep this in mind when buying LEDs for illuminating purposes - a 2000 mcd 30° LED puts out just as much light as am 8000 mcd LED with a 15° viewing angle.

Hope that helps!

 

that helps a lot, thanks jeff!

My last issue is I have no real world experience with looking at a light and seeing how bright 8000 mcd looks...So anyone here know what a good mcd value is?

 

The superbrights on oznium are 2000 mcd with a 30 degree viewing range. Is 2000 bright enough in daylight?

 

I will see if I can find out what Mine are to ive you some point of reference to go with when I get home tonight.

Edit: I just checked are there are no ratings whatsoever on the package, just says hi-output. Sorry dude.

 

That's totally fine, to be honest I can't expect too much. I need the real world experience, its the only way I'll ever learn