I use my 512Ke much less than I should wish to do simply because it is fanless. The bucket above the analogue board is not louvred ...
I have accepted that I may as well also make another hole in the bucket for a 12-V fan exhaust, and make slots in the bucket above the FBT.
equill, are you saying your 512Ke does not have the same rear bucket the 128K, 512K & Plus have? i.e. vents on the top left & right side of the handle and vents in the top rear chamfered corners? Traditionally the fans added to a 128K-Plus go in the corner opposite the analogue board. The bucket you are describing sounds more like a Classic with vents only under the handle.
a few of his decisions have caused engineers and consumers more than a bit of grief.
Tom, you neglected to mention the original anti-fan heat debacle: the Apple III, which overheated to the degree that the chips expanded and popped out of the logicboard and Apple actually suggested consumers drop the computer on the floor to re-seat them. I guess Jobs figured if there were no sockets in the 128K, they couldn't expand and pop out from the heat, so no worries.