Introducing CobKits.com - specializing in DIY and Citizen COBs

P

Pulses

Member
CobKits said:
ok lets try this again, my advertising credentials have finally been updated

cobkits.com - what products would you like to see?

upcoming:
constant current drivers
frame kits

by early next week we will have full stock of 1212 and 1825 in 2700,3000, and 3500K 80 and 90 CRI

4000K in 1212 and 1825, as well as 1818 from 2700-4000K are about 4 weeks out
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Looking to buy more clu058-1825 3500k and sst-x sinks with 80 degree lenses. Will run two leds with hlg-240h-c2100 driver.Or do you have better unit I can put together
 
pop22

pop22

Well-Known Member
yes led-heatsink has them. However, hope you like soldering, I don't believe you can use a cob holder on these. Mine came with the wires soldered to the chip.

DesertHydro said:
where can i get those heatsinks with the fans built on light that? are those the mechatronix?
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DesertHydro

DesertHydro

Well-Known Member
i was looking at the slightly bigger ones. i guess 20 isnt terrible. still a 700 investment since i wanna run 1 cob sq/ft driven softer.
 
pop22

pop22

Well-Known Member
I don't know that active cooling is the way to go with that many chips, especially at low power. These are more suited to running hard. And then you need drivers for the fans also with these

DesertHydro said:
i was looking at the slightly bigger ones. i guess 20 isnt terrible. still a 700 investment since i wanna run 1 cob sq/ft driven softer.
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CobKits

CobKits

Well-Known Member
without computing LER, lets just say they run pretty close to the crees so 50W should be mid-50s on efficiency at chip level. running 4 on a 320 at 70-75W each prob right about 50% at chip level
 
Fastslappy

Fastslappy

Well-Known Member
DesertHydro said:
i really like those but i like the DIY aspect and learning to build them as well as the look of the long aluminum heat sinks over the 4x8 beds. we'll see how the build goes on my veg array when my order from you shows up. im pretty excited to build my first COB setup.
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those long sinks are not cost effective as the passive pin sinks & don't cool as well per cost & weight
ya might wanna re-think that imo
 
CobKits

CobKits

Well-Known Member
theres a growmau5 vid where he measures heat dissipation of the pinfins vs the extruded bars and the pinfins beat em handily. cooler chips= brighter chips
 
CobKits

CobKits

Well-Known Member
DesertHydro said:
depends on your application i guess......$620 shipped for (32) 120mm pin heat sinks and $411 shipped for my (8) 46" 4.850" Wide Extruded Aluminum Heatsink.
save 200 dollars and i have a clean bad ass look. on small arrays like my veg tent i will be using the 120mm heat sinks
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i have those... theyre ok. cheap but the base is thin so not as ideal as some of the thicker models. for much over say 30W/chip they are prob better used as actives with fans right over each cob
 
Fastslappy

Fastslappy

Well-Known Member
CobKits said:
theres a growmau5 vid where he measures heat dissipation of the pinfins vs the extruded bars and the pinfins beat em handily. cooler chips= brighter chips
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it's like cars shiney sells , i'd rather cooler & brighter chips but if they wanna cool look to each his own
 
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