Thanks for the spreadsheet, Sumner. I plugged the Busa gearing into it and the quoted tire diameter from the Bridgestone specs. At 180Mph the rpms are listed as ~9,600. I was at 10,500 indicated on the tach which sounds about right for a thumbnail guess on wheelspin. Also, my tire is worn so that changes the rolling circumference etc...I'm going to see if I can measure the tire diameter to get a more accurate number to plug in there.
John,
At 187 was Michelle's blue Busa pulling redline? What year is the bike? (17 or 18 tooth front).
Thanks for the help!