Kosmik heatsink with fan. - HeliFreak
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Old 12-22-2012, 08:16 AM   #1 (permalink)
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Default Kosmik heatsink with fan.

Just arrived.

It simply plugs in to one of the sensor ports.

Just need to know what side and wheres the best place to put it?
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Old 12-22-2012, 11:10 AM   #2 (permalink)
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I would but it in the middle on top where the fet sits under, the whole top area serves as a heat sink for the fet, its a nice compact unit.
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Old 12-22-2012, 11:10 AM   #3 (permalink)
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Can you put a photo up Ben?

How are you planning on fixing this to the ESC?
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Old 12-22-2012, 11:12 AM   #4 (permalink)
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The fan goes on the top side of the esc where all the labeling is and dead center
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Old 12-22-2012, 12:41 PM   #5 (permalink)
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Cool.

Will prob use thermal tape so it wont ruin the finish on the Kosmik. I cant upload pics for some reason, keeps timing out???
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Old 12-22-2012, 12:46 PM   #6 (permalink)
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Was wondering about the thermal tape - are we sure that this won't leave any sort of marking on the Kosmiks surface?

I've just seen the timing out message as well????
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Old 12-22-2012, 01:03 PM   #7 (permalink)
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Even if it does it will be a lot less than using Artic Silver thermal adhesive or the like
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Old 12-22-2012, 01:13 PM   #8 (permalink)
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Yeah I suppose you're right about that.

Wouldn't mind knowing though from anyone who has used the tape before.
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Old 12-22-2012, 03:21 PM   #9 (permalink)
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Thermal tape comes off clean atleast the 3M 8815 does. Heres a pic of the FETS Click image for larger version

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Last edited by Magneto; 12-23-2012 at 05:26 AM..
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Old 12-22-2012, 03:30 PM   #10 (permalink)
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Quote:
Originally Posted by Magneto View Post
Thermal tape comes off clean atleast the 3M 8815 does.
What thickness would you recommend?
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Old 12-22-2012, 03:36 PM   #11 (permalink)
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8815 is very thin 15 mils. and works great .
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Old 12-22-2012, 03:42 PM   #12 (permalink)
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Thanks Magneto, useful information here.
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Old 12-22-2012, 03:48 PM   #13 (permalink)
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Yes, thanks Magneto.

Malc, found a place here http://www.digikey.co.uk/product-search/en?FV=ffec1f96
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Old 12-22-2012, 03:51 PM   #14 (permalink)
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Thanks Ben.
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Old 12-23-2012, 03:02 AM   #15 (permalink)
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By using the heatsink on the helijive/jive you can increase its amp rating. Does the same apply to the Kosmik as well?
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Old 12-27-2012, 12:42 PM   #16 (permalink)
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No, in a word. The Kosmik can go over 200a. It can peak much much higher but if it hits this max, even for a millisecond it will shut down. Having the heatsink/fan will aid in the cooling which will help to delay it shutting down if you are driving it hard
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Old 12-27-2012, 03:26 PM   #17 (permalink)
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So the Kosmik 160 has a ceiling 40a lower than the 200 in a spike??
Where approx is shutdown??
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Old 12-27-2012, 03:28 PM   #18 (permalink)
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I do not know at what value the 160 will perform a hard shut down.
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