As I found the Athlon XP 2000+ CPU fan noisy and I wanted to quiet my PC down, I started working on a fan adaptor project. It was the original stock fan supplied by AMD. I wanted to put a bigger and slower case fan.
As fan adaptors are difficult to find in stores around my place, I decided to make my own.
How to build a fan adaptor
Here is the design I came up with :
The material used was galvanized sheet metal (aluminium might work also). In order to do this, copy this plan on the metal sheet with a permanent felt marker (the red line in the plan is for reference only, don't cut), cut out the outer perimeter of the adaptor with tin snips. Drill the small holes, keeping in mind that the center four holes for the 80 mm fan need to be threaded (you need a long screw to go from the outside of the fan to fasten the fan there).
Fold the on the lines (it works well in a vise), and then cut out the center hole as the final step (I used a jigsaw). This is the end result :
After trying it out, I have good results. With a case temperature of 32C, the maximum CPU idle temperature is 42C, and 48C under 100% load for 30 minutes. The case fan that I used is a double ball bearing Antec 2600 RPM with speed monitoring.
Finally, my PC is quiet. -_-
I hope others can do this fun and rewarding project. This is well worth the effort.