Approaching aero development in a radicallynew fashion
Our engineers capitalized on the latestrevisions to the UCI rules for bicycle design
Pushed tube section depth to the limit
● Tuned aero profiles optimized for TT velocities yield arguably theworld’s fastest UCI legal TT frame
● By combining the UCI required 3:1 profiles in the extension mastwith the continuous airfoil section of the head tube we have been able to pushthe rules to their absolute maximum extent for aero performance.
Minimized the frontal width to reduceprojected area
● Factor aggressively pursued drag reduction through area reduction
● Thanks to the revised UCI rule allowing a minimum cross section onall tubes to be as small as 1cm from the previous minimum of 25mm
Radical Simplicity
● Extreme approach to Bill of Materials (BOM) minimization
● BOM minimization avoids the chaos and clutter of using an excessiveamount of parts and unnecessarily complicated designs
Integration and Compatibility
● Large tire clearance, hidden Di2 Junctions, and collaboration
with the hottest custom extensionmanufacturers make the HANZŌ exceptionally rider-friendly
THINNEST EVER TRUE AIRFOIL FORK ANDFRAME COMBINATION
The HANZŌ uses never before applied airfoilsections for the full 16cm of length allowed by the alignment of the head tubeand down tube boxes
Narrowest head tube ever
Super thin front end with the fork combineswith the frame shape to create a true airfoil.
Extended airfoil section
Optimized for bare minimum drag by facilitatingfull laminar attachment at low yaw angles in undisturbed airflow.
True continuous curvature airfoils used inall sections
Carefully selected airfoils to reduce dragfor all yaw conditions.
HIGH BYPASS RATIO FRAME DESIGN
Wide wheel interface clearances reduceinteraction effect between fork/frame and wheel aerodynamics, even under high yawconditions.
Aerodynamic performance of wheel/frameinterfaces are heavily dependant on very closely matched profiles.
● Too far apart, and the effect is negative.
● Too close together and the rider’s wheel and tire selection is extremelylimited
The HANZŌ’s wide wheel/frame clearanceallows for unimpeded free stream flow around both the wheel and the framemembers, and can accommodate 28mm tires.
ADJUSTABILITY AND COMPATIBILITY
Mono riser for penalty-free pad stack
With a super narrow 3:1 compliant monoriser, there is virtually no frontal area penalty for increasing stack height,unlike systems with bolted style double risers where the increase in stacksignificantly increases the amount of frontal area on the bike.
World class compatibility
We have developed relationships with mostmajor 3rd party component manufacturers specializing in TT bikes. We’ve worked directlywith suppliers such as AeroCoach and WattShop to give them the CAD profiles forthe mast allowing a variety of solutions to be available to riders
MATCHING RIDE RESPONSIVENESS WITH AEROGAINS
Sculpted Down tube profile
● Aero section starting at the head tube
● Truncated mid-way to work seamlessly with an aero water bottle
● Forms the rigid backbone of the frame
Gusseted bottom bracket
● UCI-legal 8cm gusset at BB improves aero performance and stiffness
● The aero section continues from the truncated downtube profilespanning the complete 16cm allowable distance
FORM AND FUNCTION: A FINELY TUNED REARTRIANGLE
Seat Tube/Seatstay junction
● Wide seatstays smooth the airflow coming off the rider’s legs
● Enhances the already exceptionally stiff frame elements
Seat post/ Seat tube tail
● Reusing the SLiCK seatpost allows for a Di2 battery in the postassuring rider convenience
● The seat tube tail hugs the rear wheel for extra wheel wrapminimizing the amount of contra-rotating flow
Seat post/ Seat tube tail
● Reusing the SLiCK seatpost allows for a Di2 battery in the postassuring rider convenience
● The seat tube tail hugs the rear wheel for extra wheel wrapminimizing the amount of contra-rotating flow
WHERE TO CUT YOUR KAMM TAIL
Kamm tail weight savings
Cutting an airfoil section saves weightwithout losing aero advantage
Not all Kamm tails are equal
A messily cut-off Kamm tail can bedetrimental to the design since if the radius at the cutoff point is too great,then the air flow stays attached, recirculates, and becomes turbulent.
Factor’s edge: owning the factory
We incorporate the level of precisionrequired in the manufacturing process to optimize this design feature.
HANZŌ and the Hour Record
When Alex Dowsett started discussing withus his desire to attempt the Hour Record again, we used it as a perfect opportunityto test the HANZŌ and our efforts to make it the fastest aerodynamic bikeavailable.
Having put more than a year’s worth ofdesign effort into the HANZŌ track bike, we are proud of the results and of ourinvolvement in Alex Dowsett’s attempt, which started out as a straightforwardrecord attempt, and then grew into something much more meaningful.
● Track adapted version of the Hanzo TT bike
● Features 3D printed titanium chainstays printed by Silca
● Exceptional aerodynamic performance at low yaw
