Much attention has been given to the helmsman's wheel in this America's Cup, particularly after foiling became the focus and the need for the helmsman to have control of the daggerboards more apparent. While ETNZ declined to share its wheel secrets, Luna Rossa and Oracle Team USA were happy to share their wheel solutions. Here Aaron Perry, a design engineer at Oracle Team USA, explains the development of his team's current wheel design. A mechanical engineer from San Diego and in his fifth Cup campaign, Perry's focus for this event has mostly been the CAD modeling of the yacht platform, collaborating with the sailing team to design onboard systems like the steering, rudders and the wheel design. Working alongside Perry are design team members Dan Smith and Richard Kent who built the wheels, wired the electronics, and were responsible for much of the original button cartridge idea, says Perry.