Yeah, it's a little blurry, my camera really wasn't meant to take this kind of picture. Anyway. On the left side of this picture you'll see the fan, with a filter on it, and below that (or to the right of it in the picture) you'll see the voltage regulator daughter board. What I needed was a way to direct the air down and over the voltage regulators. I placed a thermistor on the transistors on the VR board, and found one of them at 145f, and many others at 100+. So I found a box made of a suitable poster board like material, and cut it up.

The Problem ( But Dig the Blorbage :)

Here's what I came up with, fold the two sides down, and bend the lower part downward, and we end up with a great duct, that looks like the pic below.

Ok, here you see how it works, it ended up with a nice gentle arc to prevent causing too much back pressure, which seriously decreases airflow. I used packing tape to hold it all together, and to hold it onto the case. The best part is, I could take my cardboard "prototype" and use it as a template to make a sheet metal version of this duct, if I were so inclined. 

The results? That same 145f transistor is now at 95f. Granted, this isn't as accurate of a reading as Joe's Temp gun, but the temps are pretty good, I used the same temp probe both times. The fan shown in the first picture is not the one I ended up using, I ended up using the YS Tech fan from my old FOP32 heat sink, I wired the fan into my fan bus, but still ran the rpm wire back to the motherboard so that I could keep track of the speed of the fan.

Also, the hole for the fan, I put that in in Project Little Stealth.

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