[Dragsinger]

The 9000 plus comment by Mike is correct but I do not want a package with such high maintenance.

My first design had a 6.0 rear gear and a cam design for under 8800 RPM. About the last 150 feet it was just buzzing along.

My second build has a 5.86 gear and the cam has 2* more lobe spread. In addition, at least 70 pounds lighter.

A large part of the fun for many of us is constant experimentation.