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11-29-2006, 09:00 PM #1
Senior Member
Light intensity: Why to keep lights as close as possible
~smokybear~
I know you addressed this question to BlueBear, but I thought I'd put this out there:
This is just a shot in the dark, but why dont you try hooking up that 240cfm to your cooltube instead and open it up one one side into the cab (kinda like 'mine' in the JOURNAL). Then you could SUCK the air from inside the cab, past the bulb, and out. Then you could put your 80cfm fan where your 240 was and you might be ok.
If that doesnt work, use the same fan setup I just said, but keep the cooltube isolated, sucking cool air from outside past the bulb (not pushing air), and out. Then your 80 cfm fan should do fine as long as the bulb is cool...
Good luck.
:rastasmoke: RastafarI
TGFTheGreenFog Reviewed by TheGreenFog on . Light intensity: Why to keep lights as close as possible Light intenstiy = Total Light Emitted / ((4 x pi) x (radius^2)) And light intensity decreases by 1/x^2 where x is the distance. So like if you have 135,000 lumens at 1 foot, you increase that to 2 ft, you it would be 135,000 x 1/2^2 which is 1/4 so basically one fourth of 135,000 = 33,750. Add one more foot, 135,000 x 1/3^2 = 135,000 x 1/9 = 15,000. Crazy huh? Thats why the top bud always is so big and the bottom ones are smaller, cause they get a lot less light. LST'ing takes that Rating: 5
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