Quote Originally Posted by "What The Flux?" View Post
Hi Mark,

I was recently watching the OUTATIME documentary and refering to what you had said about the positions of the oops holes. In my looking at these details I have noticed a few things that are of interest:

  • The rear most (center) heatsink seems to have only two vertically aligned screws instead of three as seen on the Jameco heat sinks.
  • The heat sinks seem to be very slightly different from each other and slightly offset from each other (not perfectly aligned around the 15" core base equator).
  • What size are the screws that hold the heat sinks to the core base?



Many thanks
The center heat sink is somewhat odd, the 4 center holes are that sideways T shaped pattern vs the more common parallelogram shape that would typically fit a transistor. I'm not sure if that has anything to do with the mounting holes also being different.

The spacing is not perfectly even since the heat sinks were all spaced by hand and I'm sure there was some drill bit wandering in addition to measurements not being plotted out exactly perfect.

The heat sink mounting screws are button head cap screws, either size #10 or #12. I haven't gotten a chance yet to load up the CAD model to check those other holes you asked about, but I can check the screws too.