Discs bring aero downsides say Specialized - BikeBiz

Discs bring aero downsides say Specialized

Wind Tunnel tests say head on results are negligible, but a slight cross wind will add seconds
Publish date:

Wind tunnel testing undertaken by Specialized has suggested that traditional calipers may just have the edge over road discs when it comes to aerodynamics.

Cameron Piper of Specialized's aero research and development department said: "Both frames are identical, with the major changes being the brakes, the hoods and the rims. Like all other testing we'll take a baseline of the rim brake bike, then switch to the disc bike. We've then introduced a crosswind to the disc side to see what the difference is."

Head on, the results are negligible, however with a 10-degree crosswind angle around eight seconds were added over the standard 40km test.

As pointed out in the below video, there are of course other considerations to take into account, particularly for long distance riders, with discs allowing a rider to brake slightly later into corners and on descents.

Featured Jobs

the cycle hub

Showroom Manager

The Cycle Hub I Dubai, United Arab Emirates I Competitive Package & Bonus I Date Published Tuesday 26th June 2018

Giant St Paul Logo

Bike Fitter / Sales Person

Giant St Pauls I City of London I Salary: Negotiable Dependent on Experience I Date Published Thursday 21st June 2018


Bike Technician

Chain Reaction Cycles I Ballyclare I Competitive Salary & Benefits Package I Date Published Monday 2nd July 2018


Brand Content Writer

Canyon Bicycles GmbH I Koblenz, Germany I Salary: Up to €38,000 I Date Published Tuesday 3rd July 2018


Retail Sales Advisor

Chain Reaction Cycles I Belfast I Competitive Salary & Benefits Package I Date Published Monday 2nd July 2018