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FrozenGate by Avery

FS: 18650 Build Kit! Easy Assembly! 445nm, Blu-ray, or Red...

jayrob said:
It will work fine with a V5 FlexDrive, or a Micro BoostDrive...

Some are setting the FlexDrives way above what the documentation says it can do, but the drivers seem to be handling it. But at higher currents, you need to put a heatsink on the 5 pin chip...
Click to expand...
Lol, I edited my post... for some reason I confused a flexdrive and a rkcstr driver :wtf:
 





I have used the arctic alumina epoxy for years, was a distributor. Here are some photos of the heat sinks... before the thermal epoxy. Just need to get it to fit right into a particular host
 
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RDTech said:
I have used the arctic alumina epoxy for years, was a distributor. Here are some photos of the heat sinks... before the thermal epoxy. Just need to get it to fit right into a particular host
Click to expand...


Please tell us where we can buy some of those little heatsinks! :cool:
 
They were pulls from graphics boards, let me look into the purchase price. Hopefully they are not custom..
 
I've seen those for sale individually before... maybe digikey?
EDIT:yep, tons on digikey...
 
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That one that RDTech showed looks to be the same size as the driver!
 
It looks to me after an exhaustive search of off-the-shelf units, I may have to go to China or Taiwan to get what we need. Jay, could you fit it into a pill? Still thermal sheets and thermal epoxy may be better in some hosts. I will keep looking. The smallest I found was 10mm x 10mm...
 
RDTech said:
It looks to me after an exhaustive search of off-the-shelf units, I may have to go to China or Taiwan to get what we need. Jay, could you fit it into a pill? Still thermal sheets and thermal epoxy may be better in some hosts. I will keep looking. The smallest I found was 10mm x 10mm...
Click to expand...



10mm X 10mm is fine! Yes...

That will fit into a pill!

Link please! :)
 
I have a question though... how will giving the driver a finned heatsink help in the slightest inside the pill (versus just a chunk of metal or connecting the driver to the pill)? :thinking: They need airflow to work...
 
Good point...

I'm sure just a round chunk of aluminum will be find...

It's only a chip...

I have some material that is 1/2" round X 3/8" long that I use for the Custom Focus knobs. I think this should be perfect for a nice mass for the chip to be heatsinked...
 
Don't you think it's easier just to thermal epoxy the driver to the pill? Plenty of mass there, as it sinks directly to the exposed aluminum of the battery tube.
 
More that one way to do it for sure...

It will just depend on your building style...

I like to mound the driver flat if I can. Easy access to the pot.

My style: I would mount the driver flat on one end of the 1/2" X 3/8' blank of aluminum with thermal adhesive to the 5 pin chip. (and to the other chip on that side of the board for support) And then mount the aluminum chunk flat to the board inside the pill using strong (red) double sided tape...

This would put the pot facing upward, and give easy access to the adjustment...
 
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Yeah, I have mine mounted so the pot is fully exposed. I'm waiting on some thermal padding to increase transfer but in the mean time the ridiculous amount of thermal grease I have on there is probably sinking 90% of the driver's waste heat into the host.
 
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