Zipp Super 9 disc &808 NSW
If money is no object, Zipp’s wheels deliver a cutting edge in aero technology
Zipp has been in the business of cheating the wind for almost 20 years now. Having such a foundation of understanding to draw upon means these days it can focus more on the minutiae of the aero art - making tiny refinements to already efficient designs to produce those all-important marginal gains.
It gives TT specialists an embarrassment of riches to choose from in Zipp’s latest generation of aero wheels. For the majority of timetrials, however, the company’s Jason Fowler recommends an 808 NSW front/super 9 Disc rear combo as the most versatile set-up.
‘The overall rim shape of the 808 NSW is made up of several complex curves, which together with its dimples help to keep airflow attached to the rim longer and prevent stall. It means the rim shape yields a very neutral centre of pressure, which reduces the wind-induced steering torque experienced by the rider.’
Simply put, the 808 NSW is very stable for such a deep rim, making the bike much easier to control. And having a well-behaved front end means the rear can be focused purely on aerodynamics, hence the choice of the Super 9 Disc is the perfect partner.
Fowler is cagey on the exact details of the Super 9 Disc’s manufacturing process, but does say it is completely different to any other Zipp wheel and is made in its own dedicated department of Zipp’s Indianapolis facility.
‘The Super 9 Disc produces extremely low drag. This is partly due to the subtle sculpting that covers the surface of the wheel. Much like the 808 NSW it has elaborate curves and dimples which help keep the airflow attached and smooth for that bit longer.’
TT specialists have an embarrassment of riches to choose from in Zipp’s latest generation of aero wheels