And its a cast iron bitch. I bought the big 2 piece heat sink from banggood, which it appears will cool an rpi4 really well once it arrives where theres a small fan blowing on it, allowing over clocking to 1.8GHZ if need be.
BUT theres always a BUT. The heat sink won't allow a 40 pin header socket anywhere near the pins! Estimated around 3mm on eachg end and 2mm across the center of their nice purty cut-a-way So I took it to the 6040 and tried to fix it just now. I was able to gain a fat mm on each end, and I took enough off the back of the lengthwise run to kill the first fin. I had to stop on the lengthening when I could keep it clamped and what was left of the screw boss was so poorly supported it was bending under cut pressure. So in the end I took the 40 pin header to the grinder and removed over half the excess length from it, shortening it about 3mm. Now it fits but theres not room enough to insert some reynolds wrap between the connector and the heat sink. And of course I messed up the elastomer heat conduction pads on the sinks internal pillars. Bottom line is use normal heat sinks and a good fan on your pi's unless you enjoy standing in front of the mill doing it free-hand for 2 or 3 hours. Now, before the final assembly, I need to find some more of the stuff they use in place of silver bearing grease. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
