Finally managed to cobble together a rudimentary case and fan with heatsink for the rock2, and now I can compile correctly (# make -j5, etc..) and run # git clone… without the system overheating and rebooting..    Just two sheets of perspex, and some assorted m3 nylon pillars and screws..

The 5V power supply needs to be around 2.4A, to power the fan as well as the rest of the system..

Robert Gadsdon.   March 23, 2016.