Any UK LED Guys here?

freemanjack

freemanjack

Well-Known Member
Oochicoochi420 said:
It comes in 4ft lengths Jack? A 4ft length can handle 4 Vero29s at 50w each?
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I've stuck 400w force cooled onto one 4ft bar and been under junction temp max. If I was strapping 4 29's actively cooled to those bars I'd run em at 300w at least, my latest build using those bars and 3 x 29 se's took 300w and ran barely warm to the touch, in fact it ran so cool i never bothered to test the temps coz they were barely above room temp. They are my preferred sinks and i've built a ton of rigs round em.
 
freemanjack

freemanjack

Well-Known Member
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Oochicoochi420

Member
Jay7t5 said:
i asked could they mark the invoice at a lower cost sample price and they were happy to it saved me some money, worth a try depending on how much you ordering I guess[/QUOT
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freemanjack said:
Found that supplier! http://www.abl-heatsinks.co.uk/index.php?page=extrudedproduct&product=186
they have a £250 min order but if you are looking for 12 x 4 ft bars they supply RS but RS only stock it as 4ft lengths, these guys will cut to your spec and if you give em a drilling plan they can drill/tap and anodise to your spec too! Best to phone em in my experience.
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Brilliant Jack, thank you!
 
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Oochicoochi420

Member
freemanjack said:
I've stuck 400w force cooled onto one 4ft bar and been under junction temp max. If I was strapping 4 29's actively cooled to those bars I'd run em at 300w at least, my latest build using those bars and 3 x 29 se's took 300w and ran barely warm to the touch, in fact it ran so cool i never bothered to test the temps coz they were barely above room temp. They are my preferred sinks and i've built a ton of rigs round em.
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I was just thinking of amps draw really Jack, 2 x HLG 320s 1050ma would run 12 Vero29s for 650w approx. What driver are you using to run 3 at 300w?
That would half my Cob bill...
 
freemanjack

freemanjack

Well-Known Member
Oochicoochi420 said:
I was just thinking of amps draw really Jack, 2 x HLG 320s 1050ma would run 12 Vero29s for 650w approx. What driver are you using to run 3 at 300w?
That would half my Cob bill...
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I run decent multi cob arrays in parallel, the whole series thang is a left over from maximally rated cobs, vero 29's can handle most part of 200% rated drive current so if one cob in a 3 cob array dies, the other two can soak up the excess amps without blowing. As to drivers, I use a chinese supplier who builds my drivers to order, meanwell can be tricky to match volts to amps so i like being able to specify my desired drive ratings, I can give you my chinese contact if you wanna try that route but shipping and build times can be lengthy. Hook up with me on skype if you use it live:freemanjack.c60
 
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Oochicoochi420

Member
freemanjack said:
I run decent multi cob arrays in parallel, the whole series thang is a left over from maximally rated cobs, vero 29's can handle most part of 200% rated drive current so if one cob in a 3 cob array dies, the other two can soak up the excess amps without blowing. As to drivers, I use a chinese supplier who builds my drivers to order, meanwell can be tricky to match volts to amps so i like being able to specify my desired drive ratings, I can give you my chinese contact if you wanna try that route but shipping and build times can be lengthy. Hook up with me on skype if you use it live:freemanjack.c60
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Lo
freemanjack said:
I run decent multi cob arrays in parallel, the whole series thang is a left over from maximally rated cobs, vero 29's can handle most part of 200% rated drive current so if one cob in a 3 cob array dies, the other two can soak up the excess amps without blowing. As to drivers, I use a chinese supplier who builds my drivers to order, meanwell can be tricky to match volts to amps so i like being able to specify my desired drive ratings, I can give you my chinese contact if you wanna try that route but shipping and build times can be lengthy. Hook up with me on skype if you use it live:freemanjack.c60
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Looks good that build Jack. What voltage Vero29s do you run? I'm a noob to be honest Jack and just following Growmau5 n Greengene's tips. You paying £90 for a 4ft heatsink? Guessing the supplier would do them between 60-70.
Will download skype n give you a toc toc Jack, cheers buddy.
 
freemanjack

freemanjack

Well-Known Member
Oochicoochi420 said:
Lo

Looks good that build Jack. What voltage Vero29s do you run? I'm a noob to be honest Jack and just following Growmau5 n Greengene's tips. You paying £90 for a 4ft heatsink? Guessing the supplier would do them between 60-70.
Will download skype n give you a toc toc Jack, cheers buddy.
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No m8 even RS do those 4ft bars @ £30 each including postage but their supplier is the other link, they can cut and thread to pattern and are likely to be cheaper than RS as long as you need more than £250 worth of sinks. As to voltage, the rig in the vid was a 36-40v cob set but my last build I went for the 72v ones but would avoid those next time as finding suitable drivers meant buying one driver per cob. Tho to be fair they ended up costing about the same as my usual 300w singles.
 
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Oochicoochi420

Member
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freemanjack said:
No m8 even RS do those 4ft bars @ £30 each including postage but their supplier is the other link, they can cut and thread to pattern and are likely to be cheaper than RS as long as you need more than £250 worth of sinks. As to voltage, the rig in the vid was a 36-40v cob set but my last build I went for the 72v ones but would avoid those next time as finding suitable drivers meant buying one driver per cob. Tho to be fair they ended up costing about the same as my usual 300w singles.
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Oh ok says £90 on that RS link for the 4ft length...30s superb, would definately cancel out the 140mm pin sinks.
This the same sink?
http://uk.rs-online.com/web/p/heatsinks/8805960/
 
freemanjack

freemanjack

Well-Known Member
Oochicoochi420 said:
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Oh ok says £90 on that RS link for the 4ft length...30s superb, would definately cancel out the 140mm pin sinks.
This the same sink?
http://uk.rs-online.com/web/p/heatsinks/8805960/
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ok sod those sinks from rs if they are gonna be dickheads on pricing, I've had most part of 200w active thru these; http://uk.rs-online.com/web/p/heatsinks/1898612/
and am currently running one 29 at full drive current passive at pretty moderate temps on one in my main rig, nice simple 200mm squares too! they are rated at 0.7kw passive so you could possibly run a pair of 29's per sink with a big 120mm pc case fan to cool it.
**edit - just remembered I did a vid on that sink with dual vero 29's, must be summat I schmoked!:bigjoint:
 
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Oochicoochi420

Member
freemanjack said:
ok sod those sinks from rs if they are gonna be dickheads on pricing, I've had most part of 200w active thru these; http://uk.rs-online.com/web/p/heatsinks/1898612/
and am currently running one 29 at full drive current passive at pretty moderate temps on one in my main rig, nice simple 200mm squares too! they are rated at 0.7kw passive so you could possibly run a pair of 29's per sink with a big 120mm pc case fan to cool it.
**edit - just remembered I did a vid on that sink with dual vero 29's, must be summat I schmoked!:bigjoint:
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Looks pretty lightweight that heatsink Jack, not an ideal size though. 4ft lengths of that in maybe 6 -7inch width would be great, with 4 or 5 cobs on, 2 x 120mm cooling fans.
 
freemanjack

freemanjack

Well-Known Member
Oochicoochi420 said:
Looks pretty lightweight that heatsink Jack, not an ideal size though. 4ft lengths of that in maybe 6 -7inch width would be great, with 4 or 5 cobs on, 2 x 120mm cooling fans.
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You will struggle to find a better uk stockist price for sinks, trust me, I've done the legwork. Personally, I like working with these sinks, despite preferring the 4ft extrusions (prior to the 300% price hike!) they can easily take 200w actively cooled so a pair of vero's will run full tilt and you could string them together into fixtures using a little ally angle down either side. If you have enough time it might be worth looking to china coz we are desperately short of decent heatsink suppliers.
 
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Oochicoochi420

Member
freemanjack said:
You will struggle to find a better uk stockist price for sinks, trust me, I've done the legwork. Personally, I like working with these sinks, despite preferring the 4ft extrusions (prior to the 300% price hike!) they can easily take 200w actively cooled so a pair of vero's will run full tilt and you could string them together into fixtures using a little ally angle down either side. If you have enough time it might be worth looking to china coz we are desperately short of decent heatsink suppliers.
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Yeh i'm mooching Alibaba Jack, out of the country until mid Nov' so looking at 2 months until 12/12 so have time.
 
Seconds floor

Seconds floor

Member
Just bought a diy setup,
Would like to try it myself but for the price it's not to bad.
6 vero29 gen 7 52v version
Powers by 2x hlg 2100ma
Around 650 watts won't be as efficient as the 9x 1400ma setups from what i understand but hope it pulls more than out 600w hps in 4x4
 
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key4

Well-Known Member
Seconds floor said:
Just bought a diy setup,
Would like to try it myself but for the price it's not to bad.
6 vero29 gen 7 52v version
Powers by 2x hlg 2100ma
Around 650 watts won't be as efficient as the 9x 1400ma setups from what i understand but hope it pulls more than out 600w hps in 4x4
Click to expand...
Just out of interest why did you go for the Bs rather than the type Cs . What heatsinks you using @ 2100ma?
 
Seconds floor

Seconds floor

Member
key4 said:
Just out of interest why did you go for the Bs rather than the type Cs . What heatsinks you using @ 2100ma?
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Not sure 100% the c are 72v? = more driver space taken up. Suppose you could go lower Amps on driver with they same amount of lights/watts.
 
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key4

Well-Known Member
Seconds floor said:
Not sure 100% the c are 72v? = more driver space taken up. Suppose you could go lower Amps on driver with they same amount of lights/watts.
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Its a cheap way of doing it driving them @2100,a but for the extra £5 a chip id have gone with type cs @1400ma. Its the same driver/heatsink cost either way.
 
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