New for 2012, the 8.9 is the third installment of the Smart
ENVE System™ (SES™) aero wheel line. With an 85mm deep front rim and a 95 mm rear, the Smart ENVE System 8.9s were developed in the wind tunnel, on a bike frame, with a mannequin rider to optimize speed and stability. The 8.9 is not only engineered to produce class leading drag numbers when installed on a bike, but the shape of the rim is optimized to ensure even and predictable airflow attachment allowing for improved handling and confidence in variable crosswinds. A perfect TT or triathlon wheelset, the Smart ENVE System 8.9s have already made a mark with a 5th place finish under Timo Bracht at the 2011 Ironman World Championship and 1st place finish at the 2011 Australian Ironman.
Known for producing the strongest, stiffest and lightest rims on the market, ENVE’s SES™ 8.9s are no different, and equally at home in the peloton as they are in Kona.
THE EVOLUTION OF SPEED. INTRODUCING THE SMART ENVE SYSTEM.
The recipe for a fast wheel is no one single element; rather, it’s a combination of factors. When you start with in-frame development and blend proven aerodynamics, optimized stability, lightweight, stiffness and durability, the result is a revolutionary wheel design. Introducing the Smart ENVE System.
The Smart ENVE System optimizes the interface between the frame surfaces and the wheels, creating an integrated system. The front and rear wheels interact differently with the air and the rest of the bicycle. Rim shapes are optimized to allow airflow to stay attached at higher yaw angles, thus reducing drag and improving ride performance.
- The front wheel is wider and shallower to improve stability and reduce drag in any wind condition.
- The rear wheel is deeper to reduce drag where stability is less affected.
- Wheels were tested on multiple frame designs in order to produce the maximum drag reduction. The result is a wheel system, which handles predictably, and displays superior drag results when installed in multiple bicycle frame designs.
Steering feedback in variable conditions needs to be predictable to have total handling confidence. Less predictable wheels have a non-linear steering response, resulting in erratic and unpredictable handling in unsteady conditions.
The shape of the Smart ENVE System rim is optimized to ensure even and predictable airflow attachment. What the rider experiences is a balanced build up of side force as the angle of crosswind changes. This allows the rider to accurately predict the handling mannerisms of the wheel and avoid dangerous over correction cycles.
- The focus on steering stability resulted in improved handling and confidence in varying crosswinds.
- Therefore, the wheel shape was optimized to produce a predictable and linear response.
- The target stability gradient was 1.0.
STRONG, STIFF, LIGHT – THE ENVE PROCESS
ENVE is renowned for developing the strongest, stiffest and lightest rims on the market. This durability is proven across all disciplines of the sport including being the first and only carbon wheel to podium at World Cup DH events. All ENVE products, including the Smart ENVE System, share this advanced manufacturing technology. These technologies involve:
- Highest strength to weight ratio in the industry.
- Proprietary molded in spoke hole technology.
- Textured braking surface allowing for a more positive engagement and better braking in wet conditions.
Weight: DT 180*
Weight: DT 240*
Smart Enve System 8.9 Tubular
(Front / Rear)
573g / 582g
85mm / 95mm
26mm / 24mm
16 / 20
484 / 469
*Weights are based on the average complete wheelbuild and may vary +/- 2%. Wheelset weights do not include valve extenders, rim strips, or quick release levers.
**ERD includes additional length for internal nipples Tubular recommended tire pressure: 90 - 140 psi
For optimal aerodynamics use 23mm tires with the SES system.
Warning: when using Non-Locking brake holders, DO NOT apply the brakes while simultaneously rotating the wheel backwards. Failure to do so may result in ejection of the brake pad resulting in serious harm, accident, bodily injury or death. Note: Campy has redesigned their brake pad holder from 2010 (non-locking) to 2011 (locking). Make sure you are using the correct pad at all times.