I was recommended by another builder to try a fan on my cooler in order to lower my oil temps and since the cost is low and the benefits of low temps on the ramp will help, I decided to try the idea. I will say though that I ran the fan on a somewhat charged 12V Battery and wasn't impressed with the flow. However, It's worth a try. I started by laying up 2 plies carbon under a round lump of micro under plastic wrap. The fan was pressed into the plastic wrap as I wanted to get a nice tight seal around the fan shroud when finished. This plate will then be joined to a plenum that comes off the cooler. I can run a 4" hose off the fan and into a low pressure area to get maximum flow out of the cowling but will first try letting it dump into the cowl first. I believe all my oil temp issues have been due to the exit air not being removed from the cowl well enough so I'm still in testing mode here.
