Lemond Revolution - Upgrading 9s Cassette to 11 Speed
The Lemond manual might answer this question with an odd footnote on page 19, which states "11-speed components will fit, but may not allow full use of the cassette." Assuming you own the same model, that is. http://www.lemondfitness.com/files/fetch/revolution/300223-RevolutionOM-RevB.pdf"