THE ROLLEUR Your aerodynamic asset.
The Williams custom designed 31s have been created to offer the benefits of a drag reducing deep-dish rim profile while keeping the advantages of a lightweight, dependable alloy clincher. Arguably the best spokes in the world, Sapim CX Ray, will keep the rotating mass to a minimum while allowing quick acceleration unlike most alloy wheels. At 1539 grams, the 31s offer a fast and energy saving wheelset that cuts through wind for those long break-away efforts, or when called upon to chase at high-speeds for a team leader.
The 31s are an excellent choice for the rider looking for that all-around wheelset dependable for technical criteriums, exposed road races, or that hilly time trial where weight is as important as aerodynamics. As with all Williams wheelsets, the 31s also offer our new Six-Sixty hubs that feature wicked-fast 3 degree engagement and comes standard with Hybrid Ceramic Bearing Technology to reduce rolling resistance, increase durability, and improve stiffness. 190 pound rider weight limit.
Wheelset comes with:
- 31mm tall double layered light weight alloy rim
- 700c clincher
- 475 grams
- CNC braking surface for a better braking performance
- Maximum tire inflation: 120 psi
HubWilliams new hubs incorporate revolutionary new designs along with a cassette body that contains 6 Pawls, 60 Ratchets.
The 6 pawls have been engineered to divide the
engagement into 2 groups that are 3 pawls or 6 pawls in the engagement
process. Each group of pawls engages into ratchet ring at the same time
whenever drive torque is applied, this translates into faster and more
efficient power transfer. In addition we have added a high-strength,
hardness and precision fine extrusion process to the pawls and overall
6 pawls engage with 60 ratchets faster and smoother than traditional hubs equaling better power transfer
Each pawl has triple tips making more contact points than any other hub on the market:
» 18 contact point engagement with 6 pawls
Interchangeable Cassette Body
Our road hubs feature a fast and convenient way of
changing the cassette body without the use of separate
adapters or fancy tools.
• Interchangeable cassette body options:
» Campagnolo 11-speed
» Shimano 9/10/11-speed
CX-RAY - As light as a titanium
CX-Ray still receives the best results in fatigue testing of any spoke. Its
unique strength and flexibility make the CX-Ray suitable for most bicycle
disciplines. The middle section of the spoke is drawn then pressed in a special
mold to form its specific profile. CX-Ray spokes are used by top bike
racers and triathletes around the world. Special alloy treatment and sophisticated production make this all possible.
- More long lasting than any
other spokes on the market.Extremely high fatigue test results
- Special alloy treatment and
- The best aerodynamic spoke
- Produced from high-tensile,
fatigue-resistant 18/8 stainless steel conforming to the Sapim quality standard
- Strength on middle section: 1600 N/mm
- Sizes: 2,0 - (0,9x2,2) - 2,0 mm
- Elliptic aero part
Williams road wheels utilize high
quality hybrid ceramic bearings for better increased rolling performance.
- Bearing is ABEC 3.
- Si3N4 ball is Grade 5. (Grease working
temperature is from +177 degree C to -40 degree C.)
Hybrid ball bearings with steel rings
and ceramic balls have become indispensable for many advanced applications.
Among the ceramic material, silicon nitride (Si3N4)
is excellent for use in precision ball bearings.
The advantages include:
Standard bearings reduce their hardness and fatigue lives when they are
continuously used in high operating temperatures. Silicon nitride (Si3N4)
is suitable to be used in high temperature environments without loss of its
hardness and life endurance. With its rings made of special steel for
high temperatures, hybrid bearings with ceramic balls are successfully used in
the field of high temperatures.
The specific gravity of ceramic material is one-half that of bearing
steel. For this reason, use of ceramic balls with smaller ball diameter
greatly reduces the influence of centrifugal force (ball sliding and spinning
caused by gyratory moment).
The thermal expansion of silicon nitride (Si3N4) is one
forth that of bearing steel. For this reason, use of ceramic reduces the
influence of dimensional change due to different operating temperatures.
It is suitable for silicon nitride to be used in a wide range of
Hardness, Young’s Modulus, Poisson Ratio
The Young’s modulus of ceramic material is approximately 1.5 times that of
bearing steel. The rigidity of these ball bearings is, therefore, greatly
ceramic bearing precautions:
Hybrid ceramic bearings can be damaged
by high impact loads. Therefore, hybrid ceramic bearings perform best
when limited to road use.
Extra care should be taken to reduce
the risk of dirt and debris contaminating the bearings. Do not pressure
wash your Williams hubs.
100% hand built wheels
Every single Williams wheel is 100%
hand built to the highest standards. Yes, it’s faster and cheaper to use
machine builds, but if you want a perfectly true and balanced wheel it must be
hand built. That’s why from the first nipple to the last twist of the spoke
wrench Williams wheels are built entirely by hand. And once they’re finished,
each and every wheel is tested to ensure that it is dished, true, and balanced
to within fractions of a millimeter.
While taking advantage of the latest
component technology to make our wheel systems lighter and stronger, Williams
Cycling provides for easy maintenance through or standards-based technology.
We believe that a standards-based
wheel design is key to providing our customers with easy serviceability and
maintenance. Standard wheel design gives customers the benefit of years of
research and development from the entire industry, not from just one company.
Unlike proprietary wheel technology...standards give customers choices.
What is standards-based technology? It
is where the spoke joins the hub and rim in a traditional fashion. Standard hub
and rim fastening makes it easy for customers and local mechanics to true a
This results in:
- Easy maintenance
- No need to take the tube and tire off to true the
- No need to send the wheel back to the proprietary
wheel factory for retruing or repairs
- No need to spend time and money on wheel shipments
back and forth to the factory
With standards-based technology, the
customer is in control of service and maintenance without giving up