The Ecosse Spirit ES1 is a new bike touted as the world’s lightest, fastest, best-handling superbike.
The ESI has a frameless chassis with unique suspension design at both ends of the bike. The front and rear suspension use torsion springs fitted on the swingarm pivots and F1 spec dampers mounted directly between swingarm and engine.
Front suspension is a common double wishbone arrangement. However, for ES1, the lower wishbone is a composite single-sided swingarm. The unique aspect of our design is the way we mount the handlebars from the fork rather than from the frame – providing a very direct connection between handlebars and front wheel for front tire feel.
At the rear the carbon fiber swingarm has a slender section between the gearbox and the rear wheel to create the narrow position we need for ES1’s aerodynamic and ergonomic concepts.
