Lighting DIY Mars to Cree Cob conversion

[Atulip]

If you want to upgrade drivers, and upgrade leds, only thing left really is heatsinks, and those you probably want to upgrade as well for 72v cxb3590's. I'm guessing the reflector series has the same little flimsy heatsinks in it that the Mars300s had.

But 72v 3590

http://www.cutter.com.au/proddetail.php?prod=cut2889

Or in a kit with holder, reflector, etc.

http://www.cutter.com.au/proddetail.php?prod=cut2890

Discount "cutandroll" for 10% off.


And all in one pre-wired. These are build a frame, hang it up and plug it in.

http://timbergrowlights.com/products/diy-grow-light-kits/

 

[striving4greatness]

Thanks for all your help, I'll be placing the order today or tomorrow. I'll keep you abreast as to my progress

 

[Autonugs]

He's the best!!!

 

[BigSm0]

Great work Atulip. As I stare at my old Mars 600's.

There is no comparison between a Mars and even as little as 2 3590's

 

[iampepe]

@Atulip props for bring this option to our attention.
I would appreciate it if you would help me with this Mars 600 ebay light. I have 4 of them and would like to upgrade them one at a time as money allows. From reading thru this thread I should be able to run 4 cxb3590's? One on each driver? http://www.cutter.com.au/proddetail.php?prod=cut2889
This heatsink should fit inside nicely 10"x16"
http://www.heatsinkusa.com/10-000-wide-extruded-aluminum-heatsink/
On the drivers that aren't running the fans could I add an additional led? I would like to add at least a couple infrared's to each light if it's possible.

Upon opening the case I laughed at the heatsink. 1/4" fins

I thought it odd that the fans are running on the two drivers that have a stated smaller amp output .65- .665A

 

[Atulip]

Yeah looks like one 72v cxb3590 per driver should work well. For the heatsink if you plan on keeping in the case check the height also. Reason I went with the 4.85" profile was the 2/3" thickness. And it's cheap per sq inch.

You can add more leds, just stay in the voltage range for each driver, 86 it looks like. Not sure what everyone's using for IR leds though. Probably a couple options on cutter or rapid led or something.

 

[iampepe]

Oh I bet I don't have enough room, I'll take it apart and measure...

I was looking at this 850nm IR led http://www.cutter.com.au/proddetail.php?prod=cut1546 appears to have a max voltage of 10.8

 

[Atulip]

The 72v cxb3590 is under 70v at .7A or less. And that led linked would be right around 7.2v at .7A. So you should safely be able to add 2 IR leds after the cobs. 70+7.2+7.2= 84.4v.

 

[iampepe]

ahhh ok I'm understanding it now. I eventually want to build my own, I figure this is a first good step. thank you much!

 

[iampepe]

I have .3/4" of space give or take, so that heatsink won't work. Thanks for the heads up
I think the one you used (4.85) would work for me as well, get three of them 10" long. There are six mounting posts on the face of the case, so I would just have to drill one hole on each end to secure them.