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Old 10-25-2010, 09:27 AM   #1
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Default Feel the Heat. I need a mass advisory.

I built my 445 all copper SS 18650 host running a Micro Boost drive and the duty cycle is about 6 minutes before it is too hot to hold. (Almost to touch)

Anyhow, I wanted to know how the heat of the 12x Blu-rays compared to the heat generated by the 445s. I was thinking about using a SS C3 host instead just as a change of pace. It sounded like a great idea until I started to think about, (you probably guessed) heat. I know the higher the current, the higher the heat, but is it as much as the 445s? I figured I would run it around the zones DTR run it. Oh yeah, its the sled from Rayfoss.

So yeah, do you people think?
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Old 10-25-2010, 11:46 AM   #2
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Default Re: Feel the Heat. I need a mass advisory.

im not to sure but my 445's gets verry hot verry fast compaired to my 12x's but then again my 445's run at about 1000ma and my 12x's 400/500ma i have a 12x running 500ma in a Ultrafire A10 14500 host takes quite some time before it gets warm..
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Old 10-25-2010, 11:51 AM   #3
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Default Re: Feel the Heat. I need a mass advisory.

12X will not heat up as much, and it should be fine with a duty cycle (though probably a long one). the 445s are not very sensitive to heat but if it becomes to hot to hold you should NOT be leaving it on. You say at 6 minutes...try maybe 4 min on 2 min off?
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Old 10-26-2010, 01:22 AM   #4
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Default Re: Feel the Heat. I need a mass advisory.

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Originally Posted by Tikilaser View Post
12X will not heat up as much, and it should be fine with a duty cycle (though probably a long one). the 445s are not very sensitive to heat but if it becomes to hot to hold you should NOT be leaving it on. You say at 6 minutes...try maybe 4 min on 2 min off?
Well Duh I ran it for 6 min to see how it sucked the heat.

How are people achieving these crazy 30 minute tests. In the hosts.
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Old 10-26-2010, 02:04 AM   #5
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Default Re: Feel the Heat. I need a mass advisory.

Well, to put some figures on it...

P = I x V

Therefore...

a 445nm running 1Amp and at 4.2V will show a total power output of 4.2W. Assuming it's outputting 1W as light, this means it's disappating 3.2W as heat.

A 405nm running 500mA and at, say 7V, (possibly an over estimate), will show a total power output of 3.5W. Assuming it's outputting 700mW then it will be disappating only 2.8W as heat.

Efficiencies differ and the two could end up being pretty close but it doesn't take into account the heat from the driver.

I'm not sure how you'd work that out but that should illustrate the point.

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Old 10-26-2010, 02:12 AM   #6
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Default Re: Feel the Heat. I need a mass advisory.

So the bluray is less, ok.

Hmm hosts and their choices....Damn
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Old 10-26-2010, 02:17 AM   #7
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Default Re: Feel the Heat. I need a mass advisory.

That depends on what you run you it at but the point is they are close.

Any host that heats to a point you can't touch it will likely do the same with a 12x but just take a slightly longer time to get there.

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Old 10-26-2010, 03:05 AM   #8
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Default Re: Feel the Heat. I need a mass advisory.

Well of course. I do have a brain I think I will have to get another SS 18650. They are sure yummy.
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Old 10-26-2010, 03:26 AM   #9
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Default Re: Feel the Heat. I need a mass advisory.

Well, if the host got hot it means it IS effectively dispersing heat, but Some longer run times are achieved with either a direct pressed diode where it is directly pressed into the heatsink resulting in better contact, as well as using thermal adhesives instead of super glue or such. You might also want to do the 445 OR the 12x in that host but if you can get ahold of a flaminpyro MAXSINK, or a large computer heatsink, you could drill it out to fit around the head of the host and then set it with the thermal adhesive. May not look as pretty but if you do it right it will look ok, just not as sleek.
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Old 10-26-2010, 09:02 PM   #10
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Default Re: Feel the Heat. I need a mass advisory.

Quote:
Originally Posted by Toaster View Post
it is too hot to hold. (Almost to touch)
Cut it out. You're gonna kill it if you haven't already.
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Old 10-27-2010, 02:44 AM   #11
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Default Re: Feel the Heat. I need a mass advisory.

Don't tell me what to do. I can light my house on fire if I want to.

I was testing it.
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Old 10-27-2010, 03:43 AM   #12
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Default Re: Feel the Heat. I need a mass advisory.

Toaster --

Sorry, I can't resist anymore!!!!!

If you are feeling heat, You better go to Mass next Sunday !!! jk

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Old 10-27-2010, 03:48 AM   #13
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Default Re: Feel the Heat. I need a mass advisory.

This Mass? Lol
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Old 10-27-2010, 03:50 AM   #14
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Default Re: Feel the Heat. I need a mass advisory.

Toaster --- you got it :-)
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Old 10-27-2010, 05:28 AM   #15
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Default Re: Feel the Heat. I need a mass advisory.

Lol cool
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Old 10-28-2010, 12:08 PM   #16
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Default Re: Feel the Heat. I need a mass advisory.

Look at this : Flexdrive Driver Heatsink for Continuous driver duty cycle @ 1.5A if you have room in the host of course
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