towards the bottom.. 50mm (2in) fans come in groups of 10.
ive seen similar chinese "water proof" fans in 60mm (2.36in) and 70m (2.76in)
im gonna get some measurements and look into this..
i know on my r1100gs i have a verticle bar in the middle of my oil cooler so two fans hooked up to a switch would be great for rush hour traffic on those 80-95 degree days.
ebay this mynewfan
guy seems on the ball too
hes running his "conformal coating" fans under water for days in the video.
but all these fans are in the 13.2 cfm range.. much lower than your..
work in progress.. lets keep this alive.. find a "cool" solution