My bike runs 15 degrees cooler after I kick on the fan mid race.
If I don't kick on the fan I run a tad over 205 210 on a really hot day flip the switch........180 to 190
Maybe it I went faster I wouldn't need the fan, but it works for me.
I also noticed Clarkie ran his on a 200 plus hp super bike for the same reason. (Clarkie, I made the 200 hp assumption)