COB Talk

Evil-Mobo

Well-Known Member
My research and the people I have spoken with all steered me to 3500K which can be used from start to finish and produce results. With my COB in place now we will soon see. VERY happy thus far.
 

churchhaze

Well-Known Member
ghetto rigged cob's working to advantage...super tight ropes rather than metal triangle hangers for easily adjusted light angles...chain link for easy hight adjustment .... a perfect blend of top shelf technology and ghetto macgyver ingenuity..
I really love your grow! It's one of the best looking I've seen in a while!

As for those triangles, you can make them by getting some 1/16" stainless cable, some crimps, and a crimping tool. I use 3 crimps per triangle to make 3 loops. This keeps the panels from twisting vs just using a rope that can slide.

IMAG0309.jpg
 

robincnn

Well-Known Member
Reflectors make more of a noticeable footprint circle, while lenses tend to kinda whisp the light up onto the walls and mix the light.
Meet my 1st prototype Photon 170 from Sep-Oct 2015. Only 2 units were made.
It had the 77mm glass lens optics. 77mm does not have sharp cutoff's. the 90 degree focuses light too much. 120 spreads it too much.
KB80 100mm does not have sharp cutoff as well.
I switched to KB120 100mm lens but had to design a workaround to make them compatible with Cree Ideal holder. KB120 100mm is the only glass lens i like.
upload_2016-4-29_13-48-38.png upload_2016-4-29_13-49-6.png upload_2016-4-29_13-48-53.png
 

Airwalker16

Well-Known Member
Meet my 1st prototype Photon 170 from Sep-Oct 2015. Only 2 units were made.
It had the 77mm glass lens optics. 77mm does not have sharp cutoff's. the 90 degree focuses light too much. 120 spreads it too much.
KB80 100mm does not have sharp cutoff as well.
I switched to KB120 100mm lens but had to design a workaround to make them compatible with Cree Ideal holder. KB120 100mm is the only glass lens i like.
View attachment 3669088 View attachment 3669089 View attachment 3669091
I can't remember which I got. I think I have the 80. Thick glass. I'm switching to angelinas in a few days
 

PurpleBuz

Well-Known Member
I really love your grow! It's one of the best looking I've seen in a while!

As for those triangles, you can make them by getting some 1/16" stainless cable, some crimps, and a crimping tool. I use 3 crimps per triangle to make 3 loops. This keeps the panels from twisting vs just using a rope that can slide.

View attachment 3669117
what crimping tool works for thin wire cable ?

btw if you skip the top loop of the triangle and use a hook or loop that slides on the wire the bar can be angled/rotated. good for end of the row or side light.
 

churchhaze

Well-Known Member
what crimping tool works for thin wire cable ?

btw if you skip the top loop of the triangle and use a hook or loop that slides on the wire the bar can be angled/rotated. good for end of the row or side light.
I used these:

http://www.amazon.com/Loos-Cableware-Aluminum-Crimping-Diameter/dp/B0038YY25Y
http://www.amazon.com/Koch-015021-Cable-Construction-Stainless/dp/B002T44RI6
http://www.amazon.com/003-Swaging-Tool-16-32/dp/B004Z21C2E

I have the top loop there specifically to keep it from rotating though. You could permanently rotate it by putting the middle crimp in a different location and use those triangles for side lighting panels.
 
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PurpleBuz

Well-Known Member
I used these:

http://www.amazon.com/Loos-Cableware-Aluminum-Crimping-Diameter/dp/B0038YY25Y
http://www.amazon.com/Koch-015021-Cable-Construction-Stainless/dp/B002T44RI6
http://www.amazon.com/003-Swaging-Tool-16-32/dp/B004Z21C2E

I have the top loop there specifically to keep it from rotating though. You could permanently rotate it by putting the middle crimp in a different location and use those triangles for side lighting panels.
cool thanks. if the lights aren't balanced then it would be bad to rotate randomnly.
 

GrumpyToker

Well-Known Member
My research and the people I have spoken with all steered me to 3500K which can be used from start to finish and produce results. With my COB in place now we will soon see. VERY happy thus far.
Thanks that's my understanding too but if it just for veg only which one is best?
 

SoOLED

Well-Known Member
Thanks that's my understanding too but if it just for veg only which one is best?
I'm going to guess 5000k. my logic being its more left shifted spectrum(B,G). I know very little though.

do they make cxb's in higher K, like 6k or 7k
 

J Bleezy

Well-Known Member
Yeah, it's coming down in 11ish days.
I just didn't see airwalkers quote til now and I don't like the way he comes off to people. Don't get me wrong, I am all for constructive criticism.
 

Airwalker16

Well-Known Member
Yeah, it's coming down in 11ish days.
I just didn't see airwalkers quote til now and I don't like the way he comes off to people. Don't get me wrong, I am all for constructive criticism.
How do I come off to you. I just stated that it looked a bit immature still is all. Not developed and filled out enough yet.
 
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