CITIZEN COB DIY BUILD ADVICE AND NUMBERS

Citizen clu48-1818 or cree cxb-3590 under hlg320h-c1400a?


  • Total voters
    30

berten-ernie420

Well-Known Member
the reflector adapters mount using separate holes in the heatsink, which should be visible thru the big slots in the holders. i believe you need to break away the first tab of the adapters for them to clear the holders
Even then, if there is 2 mounting holes 90° offset for the hokder arent i missing a hole srilled in the heatsink? There is only 1 drilled and tapped at a 90° offset from the cob holder mounting holes. Or am i just not seeing the simplicity here?
 

qballizhere

Well-Known Member
Even then, if there is 2 mounting holes 90° offset for the hokder arent i missing a hole srilled in the heatsink? There is only 1 drilled and tapped at a 90° offset from the cob holder mounting holes. Or am i just not seeing the simplicity here?
This is what i did. I put the cob in the holder applied tim lined up the holder with 2 holes screwed it down https://www.dropbox.com/s/2ej77ezt27onos5/20161219_172414.jpg?dl=0
You can see the 2 holes you will use for the reflector holder
then got the holder and used the other 2 holes and screwed it down https://www.dropbox.com/s/3zz2iiua0cz8ljh/20170106_082647.jpg?dl=0
 

sixstring2112

Well-Known Member
Even then, if there is 2 mounting holes 90° offset for the hokder arent i missing a hole srilled in the heatsink? There is only 1 drilled and tapped at a 90° offset from the cob holder mounting holes. Or am i just not seeing the simplicity here?
those heatsinks are not drilled for those reflectors imo
 

topcat

Well-Known Member
For the CLU048 I used BJB 47.319.2033.50 holder with Ledil Angelina-XW-B F13839 reflector. The BJB holds the COB and reflector.
 

PicklesRus

Well-Known Member
No worries, all the data is from the COB calculator thread on here somewhere, its a tool you can download. Credit goes to bggrass and those who helped with the input data.
I just love playing around with it and passing on info where possible.
heres a link to the citi version
https://www.dropbox.com/s/2s0xo583lw10m29/CitiCalculator.jar?dl=0

and to the thread itself

https://www.rollitup.org/t/diy-cob-led-calculator.890214/page-11
You can find links to the cob calculator on www.ledbuilder.org
 

berten-ernie420

Well-Known Member
For the CLU048 I used BJB 47.319.2033.50 holder with Ledil Angelina-XW-B F13839 reflector. The BJB holds the COB and reflector.
Well then. I have the ideals. May hold on to these for the cxb build i may add later on down the road. But im going to get more holders, of the bjb variety and just use it with the reflectors you used as well. I can always add the extra parts to any other build i intend to do in the future.
 

berten-ernie420

Well-Known Member
For the CLU048 I used BJB 47.319.2033.50 holder with Ledil Angelina-XW-B F13839 reflector. The BJB holds the COB and reflector.
I cant seem to find a part number for that holder? This is what it came up with, and it doesnt list the clu048 as one that is compatable. Do u have a link to the holder you used with you 048's?
 

CobKits

Well-Known Member
Even then, if there is 2 mounting holes 90° offset for the hokder arent i missing a hole srilled in the heatsink? There is only 1 drilled and tapped at a 90° offset from the cob holder mounting holes. Or am i just not seeing the simplicity here?
for ideal reflector adapter mounting holes are offset 109 deg from holder holes:

https://idealind.com/content/pdfs/specsheets/reflector_adaptor_specsheet.pdf

upload_2017-1-8_20-49-32.png

bjbs only use 2 holes and the reflector mounts right to the holder with no separate adapter
 

berten-ernie420

Well-Known Member
For the CLU048 I used BJB 47.319.2033.50 holder with Ledil Angelina-XW-B F13839 reflector. The BJB holds the COB and reflector.
What are you running your cobs at? I read somewhere the bjbs have a limit and i dont think im below that limit. Cant remember if its watt or amps but im running 4 1818's on an hlg320-1400A at about half power. And those heatsinks were indeed drilled for different holders but they work bare nevertheless. Next light im using active cooling heatsinks from mechatronix. That build will start this weekend.
 

topcat

Well-Known Member
I think the BJBs are rated at 150V, the ideals are much higher. You'll be running the 1818's at about 52V, you'll be fine. My next build will be with 1818s and I'll use the same holders as I did with the 36V 1212s at 1400mA.
 
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