Introducing CobKits.com - specializing in DIY and Citizen COBs

assembled Rspec fixtures are on sale for the month of january

HLG 600 Rspec Fixture – CobKits.com

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HLG Scorpion Rspec – CobKits.com

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HLG 300L Rspec Fixture – CobKits.com

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for those looking for maximum performance in a no-frills package, the basic 2-diablos-on a triple heatsink assembly is also on sale (does not include a driver - im currently running this setup with drivers mounted remotely). If you need any application assistance, PM or email me

Double Diablo Assembly – CobKits.com

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I'm running 4 Diablos in a 4x4 tent, no enhanced CO2 and I'm getting about 1100 PPFD @ 400 watts! I consider this the perfect low power LED light. My drivers are a pair of HLG240H-C2100b, each run at 200 watts ( from the wall ). In my current SOG grow, I've kept the light 32" above the plants the entire grow. Best money I've ever spent on grow lighting!

Blue Dragons .jpg
 
GreenGddss4u said:
Have you added the pin holes or screw so that heatsinks are can be attached to hanging wire
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that post is from 2016...

the heatsinks i have currently have multiple mounting options, from the top or the sides, there are 4 4mm holes on the sides (at 90 deg apart) for easy level hanging, ill take a pic for you and upload it here later
 
Hi Cobkit do you mind telling me if one your pre made engines setups have the hanging screws where one would attach the hanging kit too? I'm sorry for asking here I tried looking through the site but I coukd not find the answer. So basically all that would be needed would be to wire in tbe correct driver and then of course the hanging wires. But anyways thank you in advance
 
GreenGddss4u said:
Hi Cobkit do you mind telling me if one your pre made engines setups have the hanging screws where one would attach the hanging kit too? I'm sorry for asking here I tried looking through the site but I coukd not find the answer. So basically all that would be needed would be to wire in tbe correct driver and then of course the hanging wires. But anyways thank you in advance
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As far as I can tell, if the premade engine is a passive heatsink, it will come with mounting holes. As far as the hardware, I'm sure it's just a m3 screw or something close to it if it doesn't actually ship with said hardware. However, if it's an active heatsink, on the iceled active heatsinks he has in stock, they don't have mounting holes predrilled from factory far as I can tell, at least my 20 something heatsinks haven't had any predrilled side holes. So it'd be some thing to note and get clarity on prior to ordering. Hope my 2 cents helps spark a reply from op with some clarity.
 
berten-ernie420 said:
As far as I can tell, if the premade engine is a passive heatsink, it will come with mounting holes. As far as the hardware, I'm sure it's just a m3 screw or something close to it if it doesn't actually ship with said hardware. However, if it's an active heatsink, on the iceled active heatsinks he has in stock, they don't have mounting holes predrilled from factory far as I can tell, at least my 20 something heatsinks haven't had any predrilled side holes. So it'd be some thing to note and get clarity on prior to ordering. Hope my 2 cents helps spark a reply from op with some clarity.
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the active mechatronics come with multiple mounting options. there is a hardware kit with captive 1/4-20 nuts and you can choose to use either eyebolts or capscrews (both are included)

also comes with M3 self-tappers to mount the cobs, grommet and clip for wiring
 
pop22 said:
I'm running 4 Diablos in a 4x4 tent, no enhanced CO2 and I'm getting about 1100 PPFD @ 400 watts! I consider this the perfect low power LED light. My drivers are a pair of HLG240H-C2100b, each run at 200 watts ( from the wall ). In my current SOG grow, I've kept the light 32" above the plants the entire grow. Best money I've ever spent on grow lighting!

View attachment 4794249
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1100 ppfd? Like directly under one of the boards? Certainly can’t be the average canopy ppfd, it’s simply not possible unless the system efficiency is above 4umole/j
 
I measured with a quantum par meter. I did not do a grid, just spot measurements at the canopy. at several spots directly under the light I had readings of: 1132, 1047 998 1002. Out to a foot either side of the light my readings were in the 790 -920 rage. I did not average my readings mathematically.
This was with the light at 18" above the canopy. So even if my meter is off by say 10% ( I doubt it ), I still VERY pleased with these light. And I just harvested that packed tent and even as crowded as those plants were, there was almost no popcorn buds on the plant, maybe a 15g total for 6 plants.

I'll also try to get a pic of my meter readings.

I will be doing more formal testing in the near future so I'll have more accurate info to offer.

UpstateRecGrower said:
1100 ppfd? Like directly under one of the boards? Certainly can’t be the average canopy ppfd, it’s simply not possible unless the system efficiency is above 4umole/j
Click to expand...
 
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