New heatsink idea. - Page 2 - RC-Monster Forums

zeropointbug · 05.08.2007, 08:08 PM

A4, also, I was looking at the other pics. Why do you have the slot where the Quark mounts? Was this supposed to be THE Quark case instead of the alum. Quark case?

If that is the case (no pun intended), then that would work fabulous for dissipating heat as there is only the FET's and the then the heatsink, and you definitely would not need fans.

05.08.2007, 09:17 PM

Quote:

Originally Posted by zeropointbug

A4, also, I was looking at the other pics. Why do you have the slot where the Quark mounts? Was this supposed to be THE Quark case instead of the alum. Quark case?

If that is the case (no pun intended), then that would work fabulous for dissipating heat as there is only the FET's and the then the heatsink, and you definitely would not need fans.

lol that's the idea :005:

zeropointbug · 05.08.2007, 11:37 PM

So you would take the board out of the Quark case and transplant it then?

I want to make a controller case for mine, still thinking exactly how to do it. You see, I want mine to have the top set of FET's coupled to the case as well, I really don't like how they are not.

05.09.2007, 12:05 AM

I don't even have my Quark yet, and I've been contemplating this. Perhaps a case that will accommodate the addition of four caps as well. I don't think it will be hard, but I would prefer to use anodized pieces of aluminum.

Once I get my Quark, I'll take it apart. Maybe the easiest way to do it would be to sandwich the controller between two pieces of aluminum with all of the surfaces of the fets making contact with the aluminum to draw the heat away. I'd just use some thermal compound between the fets and aluminum plates and then make some standoffs to screw into, effectively clamping the esc between the plates. This way, if you ever did blow up the esc, all you'd have to do is put it back into its stock case and ship it off to S&T.

I'll have a better idea when I get mine in tomorrow. Then again, I just may be too excited to mess with it. I might just want to throw it in to see what it will do. I hope the caps get here soon.

zeropointbug · 05.09.2007, 03:03 PM

I would play with it a bit before you take it apart. IMO

YES! That is almost exactly what I was thinking, sandwiching it between two slabs with screws, then another case. Seeing as doing the internal mod works wonders, a custom case with no transfer slab, and a being able to transfer heat away from the top FET's will make it a new esc, plus more caps. It would be a hellova controller.

thecrusader · 05.09.2007, 03:57 PM

I was thinking you guys should start a new thread...

nativepaul · 06:16 PM

To get decent flow though a duct the inlet, its area has to be at least the same swept area of the fan blases. With the restriction of the blades creating narow channels you will need a lot more intake area than you have or the fan will be running stalled and have very little flow.

If you cut out channels in the sides as well as the ends something like this, it would triple the inlet area and restrict the flow a lot less.

smhertzog · 06:29 PM

Quote:

Originally Posted by AAngel

I don't even have my Quark yet, and I've been contemplating this. Perhaps a case that will accommodate the addition of four caps as well. I don't think it will be hard, but I would prefer to use anodized pieces of aluminum.

Once I get my Quark, I'll take it apart. Maybe the easiest way to do it would be to sandwich the controller between two pieces of aluminum with all of the surfaces of the fets making contact with the aluminum to draw the heat away. I'd just use some thermal compound between the fets and aluminum plates and then make some standoffs to screw into, effectively clamping the esc between the plates. This way, if you ever did blow up the esc, all you'd have to do is put it back into its stock case and ship it off to S&T.

I'll have a better idea when I get mine in tomorrow. Then again, I just may be too excited to mess with it. I might just want to throw it in to see what it will do. I hope the caps get here soon.

Like this (pics are before I added shrink wrap)

http://www.rc-monster.com/forum/atta...1&d=1159475519
http://www.rc-monster.com/forum/atta...2&d=1159475519
http://www.rc-monster.com/forum/atta...3&d=1159915570

zeropointbug · 07:03 PM

How does that work SMHERTZOG? We were thinking of something a little more civilized? :005:

I think I might have said this before, but the heatsinks on the caps won't do anything for cooling, almost no contact area.

I will post a pic of what I had in mind, for a Quark case (CAD Design). This might take me a couple days to work out. :030:

Also, that heatsink will not perform as well as RC-Monster's, IMO.

BrianG · 05.09.2007, 07:16 PM

I would think a pin design would work the best since there is a LOT of surface area, not restrictive to airflow, multiple sources for air exhaust, and the pins create turbulence in the airflow which helps dissipating properties. Of course, this would be more expensive to make than simple CNC...

zeropointbug · 07:24 PM

Crap, I don't have any dimensions right now (Quark sent for replacement), so I can't make an accurate design.

yeah, pin milling is expensive and hard to do. But there is alot of surface area, like THIS, I don't know how they make those?:032:

BrianG · 05.09.2007, 07:23 PM

What? Quark dimensions? This won't work?

Quote:

Originally Posted by rc-monster.com

Size : 70 X 34 X 19 mm (Without wire)

zeropointbug · 08:18 PM

hmmm, I suppose that's all I need, and i guess the hight of the bottom FET's heatspreader (EDIT) is 3mm.

Does anyone know the exact measurements of the surface of the top FETs and to surface of the bottom FETs? If anyone has taken this with a caliper?

Thanks

zeropointbug · 05.09.2007, 08:17 PM

Two more measurements: width of the power board PCB?

: The top FET heatspreader has a step out of it, anyone know measurements on it?

Sorry to bother anyone, I'll just have to wait until I get my Quark back before I can do it then.

thecrusader · 09:03 PM

Quote:

Originally Posted by nativepaul

To get decent flow though a duct the inlet, its area has to be at least the same swept area of the fan blases.

The outside circle is the same diameter as the inlet diameter paul. I see where your going with those fins. It'snot going to take me very long to machine this, so we'll see what happens. I think at some point I will de case the controller and try to figure out some sort of "clamshell" sink.