the pig just runs hot. that being said, here's my humble
:
i recall a lot of folks saying they're running engine ice or water wetter and experiencing better heat dissipation via that route. i still run the coolant/ deionized water in mine and have a switch to reverse my fans to push air out thru the rads rather than pull it in (i just switch back for city/ traffic riding, and reverse for canyons/ highway). the RC fans pull air from outside the fairings, which simple fluid dynamics dictates is inefficient (fans trying to pull high speed, low pressure outside air and shove it into a low speed, high pressure area inside the fairings just doesn't work too well).
i noticed a drop of about 5-25 degrees F by running the fans in reverse from conventional on the same 50-mile backroad loop.
they're simple stator motors on the fans... put power in one direction, the fans turn that way. put power the other direction, and the fans turn the other way. but of a pain to wire in, but i have a bit of a schematic for the switch if you want. cost all of about $20 including parts and gas to go get the stuff from my local radio shack (with a good bit fo help from the much more knowledgeable folks on the board here... thanks RVT MAVERICK!!!).
hope this helps some.
-mike