ホーム Vision World Wind Tunnel Experience 7 1月 2019 Wind Tunnel Experience Airflow modelling and wind tunnel testing of new products are key for VISION. We are synonymous with a no-expense spared assault on wind resistance, and the tests with pro teams and athletes in wind tunnel are fundamental to develop our lines. Forces acting against a rider at 50kph on a flat road require around 500W power output to overcome. Of this, 5% is mechanical within the bike and 8% is rolling resistance from the road and tyres. That leaves between 85% and 90% – around 430 Watts – down to air resistance. This is why we test repeatedly our products in wind tunnel, creating super-fast aero components that allow the rider to push their limits in race conditions.