Yamaha’s design is the most elegant solution: two aero vanes inside each side of a widened fairing.
“It’s a neat little solution, but the effect will be much less than what they had last year,” says Rowland-Rouse. “They’ve presumably looked at the maximum width allowed, then positioned a couple of vanes in there, because they’re more like vanes than wings. Then they’ve run the fairing skin around the outside of the vanes. I’d say the gap between the two vanes is too small because the two surfaces are really close to each other, so the low pressure underneath the upper vane may interfere with the high pressure [for downforce] of the lower vane. On the other hand, it’s probably more efficient in terms of drag than last year’s wings. Also, the endplate [the fairing skin] will massively reduce the vortex that would come off the end of the wings, so the instability for a following rider won’t be anywhere near as bad as it was with conventional wings.”
‘They’ve cleverly worked around the rules to create four ‘wing’ surfaces in front of the handlebars’