Heatsinks for DIY LED lamps

Uberknot

Uberknot

Well-Known Member
Airwalker16 said:
No, 3 clusters of red and blue that are 44 volts and 2 cxb3070's that are 36 volts. All being ran on and hlg-120h-c700
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I don't see why not have you figured the surface area of that type heat sink compared to the others? maybe have two small fans over the 3070's?

I would read that thread there you'll see some good info.
 
Airwalker16

Airwalker16

Well-Known Member
Uberknot said:
I don't see why not have you figured the surface area of that type heat sink compared to the others? maybe have two small fans over the 3070's?

I would read that thread there you'll see some good info.
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I'm sure with fans it'll be fine, but I wanna know if it can be done passively.
 
Vonkins

Vonkins

Well-Known Member
Do u guys think I can adequately cool a 6×36 heatsink with 4 cxb3590 3000k driven by hlg 240-1750 pushing each cob at about 63 watts a piece. I'll be actively cooling each heatsink with 2 140mm cool master fans. Will this work well? Gonna be running 20 cxb 3590 3000k 90CRI in a 4×8 or 7 space. Trying to yield at least 2lbs
 
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Airwalker16

Airwalker16

Well-Known Member
Vonkins said:
Do u guys think I can adequately cool a 6×36 heatsink with 4 cxb3590 3000k driven by hlg 240-1750 pushing each cob at about 63 watts a piece. I'll be actively cooling each heatsink with 2 140mm cool master fans. Will this work well? Gonna be running 20 cxb 3590 3000k 90CRI in a 4×8 or 7 space. Trying to yield at least 2lbs
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Yup. It's exactly my setup. Heatsink doesn't even got hot.20160212_220151.jpg 20160218_052553.jpg 20160909_093428.jpg
 
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Phillies1990502

New Member
I'm sure this has been asked but there's a lot of pages lol. Just want to confirm. I want to semi passively cool some COBs. I have 10 Vero 13s running at 500mA and I want to put a couple Vero 29s as well. What size heat sink would be recommend for this?
 
Uberknot

Uberknot

Well-Known Member
Phillies1990502 said:
I'm sure this has been asked but there's a lot of pages lol. Just want to confirm. I want to semi passively cool some COBs. I have 10 Vero 13s running at 500mA and I want to put a couple Vero 29s as well. What size heat sink would be recommend for this?
Click to expand...

What's the total watts you want to run? 200-250? and the length you can use in your area? 2 ft 3 ft 4ft?

If you know those you can get a better idea.
 
fearnoevil

fearnoevil

Well-Known Member
Vonkins said:
Do u guys think I can adequately cool a 6×36 heatsink with 4 cxb3590 3000k driven by hlg 240-1750 pushing each cob at about 63 watts a piece. I'll be actively cooling each heatsink with 2
140mm cool master fans. Will this work well? Gonna be running 20 cxb 3590 3000k 90CRI in a 4×8 or 7 space. Trying to yield at least 2lbs
Click to expand...
So I'm new to this so that's where this Q is coming from ;?D So you're planning on 5 fixtures total with 10 (or more?) 140mm fans, is that correct? And if you're planning on pullin 2elbows, one suggestion is increas your veg time, just don't do it like I did.

I'm wondering it you couldn't cool the whole setup with 2 decent sized/quality oscilating fans at each end of the 8' length? I suppose the big fans do use more juice but I always tend to think that relying on large numbers of individual moving parts tends to increase the chance of a failure to one of the fan units, unless some overlapping redundancy is designed in.

Sure, even with quality oscillating fans they do eventually fail, but in such a small area one should be able to keep disaster at bay until you discover it (as long as you check daily of course). I appreciate any input, as I'm still designing my own grow light set up myself. And good luck with that project, I'll be subbing it if you do a grow log dude ;?)
FYI, I ended up with a little over 3lb/s with just 6 plants. Started with the thought of stretching veg times to 2 months or more, got sidetracked on another major project and by the time I got back to work with girls almost 4 months had passed and they were all Amazons, lol, 6" tall and not enough room for the flower stretch.

Ended up layin them down on their sides, and after 4 weeks of stretch. the largest was nearly 9' long and look like a hedge, All six grew masive amounts of vertical colas.
I end up with a little over 3 lbs.6 ozs but under 6 x 600w high pressure sodium bulbs after a total of 11 weeks in flower. End production was roughly over 3 bows,due to losing 6 ozers to molddue to extremely super-dense but bud, seriously the densest I grown personally (So the strain Immense Bulk I;d give an A+ for quantity, B+ for flavor profile, great body high and sleep med for sure. but unless you have some serious humidity control, this can be a big issue. So great size of buds but for THC content it was above average but did not turn out to be the Holy Grail that I've been looking for for these last 5-6 years. I suggest that if you grow them to their full potential, you should either live in a very dry climate or invest in an industrial strength dehumidifier, just my three and a half cents (inflation0 and should be taken with a grain of salt cuz I'm on my beddy-bye meds and that's always a mistake, lol. Well hope this made sense ;?D
 
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PhotonFUD

PhotonFUD

Well-Known Member
Going to try the following projects:

1. Street sign. Picked up a bus stop ahead sign from surplus shop. It is 3x3 made out of whatever metal they make street signs out of. Reflective side is the orange/red'ish so could be beneficial as well

2. Cookie sheet/pan. 1x2.

3. Shelled 1U rack mount server chassis. 19"x34". Perfect for that 3x2.

Each will be running uber under driven chips so I don't see heat as being an issue and plan to passively cool.
 
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