Realstyles Diy Cxb3590 Tutorial

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L

LFP

8
1
Mhmmm... my plan was to go with 4 in a row, 2 biulds, just for the edges of the tent (4x4), in the middle I have 2 leds (~350w), 5 would be cool but no gold... I will go with 4 and see how I will space them.

Idea
 
AvidLerner

AvidLerner

296
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REALSTYLES said:
Well I'm finished drilling all the holes. I used the 1/8" bit for the holes for the cob holders and the lens holders and 19/64" for the eyebolt holes then I tapped them with the 5/16-NC18 tap. Also I typed the wrong size in the parts list it's not 3/16"-NC18 tap lol my typing sucks. The first thing I do is install the eyebolts and then the fan
View attachment 542105
View attachment 542106
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Click to expand...
RS,
Can we use self tapping #4 or #5 screws vice tapping holes
AL
 
G

GrowOZ420

4
3
RealStyles,
Cant tell you how much I appreciate all the info you have posted on numerous boards.
So I was thinking of doing my own DIY lights. But I have a few questions… I will be growing in a 4x4 and a 4x8 tent. I was thinking about going to a 8" x 30" heat sink to spread the cobs out a little. Running the CXB3590 v72 on HLG185h-c-700ma. Should put the cobs @ 50w and 64% efficient if I am correct… So one fixture is 16 PARw/ft^2 and two would be 32 PARw/ft^2. I know people say 30-50 watts/ft^2 but is that PARw or just watts? Also do you recommend lenses, reflectors, or neither?
 
AvidLerner

AvidLerner

296
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GrowOZ420 said:
RealStyles,
Cant tell you how much I appreciate all the info you have posted on numerous boards.
So I was thinking of doing my own DIY lights. But I have a few questions… I will be growing in a 4x4 and a 4x8 tent. I was thinking about going to a 8" x 30" heat sink to spread the cobs out a little. Running the CXB3590 v72 on HLG185h-c-700ma. Should put the cobs @ 50w and 64% efficient if I am correct… So one fixture is 16 PARw/ft^2 and two would be 32 PARw/ft^2. I know people say 30-50 watts/ft^2 but is that PARw or just watts? Also do you recommend lenses, reflectors, or neither?
Click to expand...
4x4=16SF x 50W/SF = 800W. Each fixture is 400W. You will need two fixtures per 4x4 area, for a total of six fixtures each with 8CXB3590's, or 48 COB's, 12 Drivers, six fans and fan drivers, etc. RS is using reflectors he gets from KB as part of the package incl, ChipLok holder, lens, lens holder.
Peace
 
G

GrowOZ420

4
3
AvidLerner said:
4x4=16SF x 50W/SF = 800W. Each fixture is 400W. You will need two fixtures per 4x4 area, for a total of six fixtures each with 8CXB3590's, or 48 COB's, 12 Drivers, six fans and fan drivers, etc. RS is using reflectors he gets from KB as part of the package incl, ChipLok holder, lens, lens holder.
Peace
Click to expand...
Yes I understand the standard is 30-50w/ft^2 and how to calculate that. But 75w/ft^2 at 45% efficient is 34PARw/ft^2 and 50w/ft^2@64% efficient is 32PARw/ft^2. So watts doesnt really tell you how much light your plants are getting. What I am after is PARw/ft^2.
 
AvidLerner

AvidLerner

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GrowOZ420 said:
Yes I understand the standard is 30-50w/ft^2 and how to calculate that. But 75w/ft^2 at 45% efficient is 34PARw/ft^2 and 50w/ft^2@64% efficient is 32PARw/ft^2. So watts doesnt really tell you how much light your plants are getting. What I am after is PARw/ft^2.
Click to expand...

There is another thread on reflectors and hte outcome was reflectors increase lumens at a target by 15% and lenses by 20%. I am working towards efficiency and wattage. Running 50W/SF veg and 45W/SF bloom.
peace
 
G

GrowOZ420

4
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AvidLerner said:
There is another thread on reflectors and hte outcome was reflectors increase lumens at a target by 15% and lenses by 20%. I am working towards efficiency and wattage. Running 50W/SF veg and 45W/SF bloom.
peace
Click to expand...
Thanks for the Info on reflectors and lenses.
Remember Watts do not measure the amount of light your plants are getting, only consumption of energy. So don't get too caught up in watts/ft^2
 
AvidLerner

AvidLerner

296
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GrowOZ420 said:
Thanks for the Info on reflectors and lenses.
Remember Watts do not measure the amount of light your plants are getting, only consumption of energy. So don't get too caught up in watts/ft^2
Click to expand...
I calculated my two units I am building The veg unit,4 CXA3590, 72v, 5000k, CD bin w/C700 @ 732 PPFD and the bloom light 8 CXB3590, 36v, 3500K CD bin w/ c1400. I also hav c1050 to educe if i want at 1220 PPFD. I will be able to dim both units at will to 50% easily. peace. it is lumens we are looking for not watts. Watts is just a target to get where you want to be. design parameters to get started, and find efficiency. peace.
 
G

GrowOZ420

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AvidLerner said:
I calculated my two units I am building The veg unit,4 CXA3590, 72v, 5000k, CD bin w/C700 @ 732 PPFD and the bloom light 8 CXB3590, 36v, 3500K CD bin w/ c1400. I also hav c1050 to educe if i want at 1220 PPFD. I will be able to dim both units at will to 50% easily. peace. it is lumens we are looking for not watts. Watts is just a target to get where you want to be. design parameters to get started, and find efficiency. peace.
Click to expand...
Yes lumens are a better indicator than Watts but lumens still only measure visible light to the Human Eye, and a good bit of photons needed for photosynthesis are out side the spectrum for the human eye.
 
Last edited:
Tejashidrow

Tejashidrow

191
43
Hi
Can one run

2- cxa 3070's
&
2- cxa 3590's
( 4 cobs total)
All 36 volts
50 watts each
Off of one driver???
Thanks
 
Tejashidrow

Tejashidrow

191
43
I already have a DIY cob light
That's 2-3070 cobs 36 volt
Running at 50 watts (100 watts total)
I want to bump up to 200 watts in my grow area BUT I don't want to deal with 4 divers.
I want to build another but with 2-3590 cobbs (I can afford 2 3590 now) and run the 3070 and 3590 off one driver till I can afford the second 3590, then move the 3070 unit into the veg cab.
Could you recommend a driver that will do that @ 200 watts???
Thanks
 
Tejashidrow

Tejashidrow

191
43
My bloom Area has been expanded and doubled in size.
The 3070 did a good job in the smaller sized area but kinda dropped off in the bigger area.
I wa ant to bump up the lights but can only afford a 2 up 3590 at this time.
So hopefully can run the 3070 and 3590 off one driver till I can afford the next 2 up 3590 light
 
Tejashidrow

Tejashidrow

191
43
Thanks!!
All the different drivers are confusing but hope to sort it out this weekend......
I hope
 
AvidLerner

AvidLerner

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if alal yopur cob's are 36v, just look at Vf forward voltage. Add them up and pick the driver that can support that. i would imagine a 185H-C1400B would work great if your 3070's can handle the amps at that level. I have mixed 72v and 36v on the same driver and it works, they just create different watts based on volts and amps running. if all cobs arwe 36v you will get consistent watts from both equally. lumens may be different tho. peace.
 
Toaster79

Toaster79

8,264
313
AvidLerner said:
if alal yopur cob's are 36v, just look at Vf forward voltage. Add them up and pick the driver that can support that. i would imagine a 185H-C1400B would work great if your 3070's can handle the amps at that level. I have mixed 72v and 36v on the same driver and it works, they just create different watts based on volts and amps running. if all cobs arwe 36v you will get consistent watts from both equally. lumens may be different tho. peace.
Click to expand...

I'm running my 3070's at 2.1A without a problem
 
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