New heatsink idea. - RC-Monster Forums

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.

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:

smhertzog · 05.10.2007, 07:36 AM

Quote:

Originally Posted by zeropointbug

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.

The caps get at least 30-40 degrees more than the hottest place on the heat sink. The caps get so hot that the heat shrink peeled off. Maybe the extra caps quark has mentioned will help keep the cap temps down. It may be ugly but it works. How many quarks have you seen running a 10+lb gmaxx in 90f heat with a 7xl, orion lipos, and geared for 40+ mph without thermaling and all with no fan?

zeropointbug · 01:05 PM

I have a 7XL too, I did the internal mod to it, but I don't know if it was just my radio TQ-3 (i know, i know) but after about 10+mins, it would sometimes stop. I wonder if it was a thermal, because it stopped, and I went and pushed it with my foot, the brakes are on?

Also, I was talking about the other heatsink there, not yours SMHERTZOG, just in case... :032:

Yes, I would recommend soldering some caps to your Quark, that will help save those caps, the 7XL is one current greedy motha.

smhertzog · 05.10.2007, 03:27 PM

[QUOTE=zeropointbug]I have a XL too, I did the internal mod to it, but I don't know if it was just my radio TQ-3 (i know, i know) but after about 10+mins, it would sometimes stop. I wonder if it was a thermal, because it stopped, and I went and pushed it with my foot, the brakes are on?QUOTE]

I had similar problem with my first quark. Although I was using a spektrum radio at the time. It would just stop I dont remeber if the brakes were on. I would wiggle the throttle and it would start up again. That one took a dump and the replacement didnt do it.