About the time I get to servicing my air filter before an LSR event, it is 2am and I'm leaving at 4am and I can't wait overnight for the filter to dry before I oil it.
I stopped at a garage sale and saw this bathroom fan. It's rated at 50 CFM and 4 Sones which I think is French for "can't hear it over the Speed Channel".
Anyway, I washed the filter as normal and set the fan in the filter and plugged it in. In 5 minutes the filter was perfectly dry and ready to oil and install.
This type of fan will work with Gen I Hayabusa filters.