The biggest factor in road bike comfort are the tires; they provide more compliance than any other part of the bike. Wider tires are better at reducing shocks from cracks, curbs, cobbles and potholes, which is why they are the norm at Paris- Roubaix. Wider tires also have lower rolling resistance, because their shorter contact patch requires less bending by the casing.
In addition, wider tires offer an advantage on long and multi-day rides, reducing the steady drain on a rider’s energy level caused by high-frequency road buzz. But aerodynamics are also important on such rides, and wide tires tend to test poorly in the windtunnel. However, that is to be expected if you test them with frames and parts optimized for narrow tires. The STRADA is the first aero road frame optimized for wider tires, so finally you can be fast and comfortable all the time, from the cobbles to the climbs. All day, every day, with one and the same bike.
You probably know we strongly believe in 1x drivetrains for many riders and situations. But we also know there are riders and situations where 2x still makes more sense. With the Strada Due, we’ve worked hard to keep the seattube as narrow as on the original Strada, so that the airlfow is disturbed as little as possible by the addition of the front derailleur hanger and the derailleur itself.
The Strada Due is only compatible with electronic drivetrains. Without limitation, it is compatible with all SRAM eTap and Shimano Di2 road groups. For Campagnolo EPS, please note that its seatpost battery is very long, so on smaller sizes there is a limit to how low you can position the seat before the battery touches the curved part of the seattube.
At 3T we design for real world aerodynamics at realistic speeds. This means we test at 20mph (32kmh) and 30mph (48kmh), we test with bottles and other “difficult parts” for aero optimization, and sometimes we even test dirty and muddy bikes (see the Exploro for that).
But most importantly, we want to design frames that are fast with realistic tires. It’s no use that a bike tests fast with 21mm tires if the rider puts 25’s on. It’s even worse if the rider would have preferred 28mm tires that don’t even fit!
After 17 years of co-founder/owner of Cervélo, most people think our Head of Design Gerard Vroomen is all about aerodynamics. And they aren’t completely wrong; the Strada is full of aero details, including some like the front and rear wheel cutouts that are more commonly seen on time trial bikes.. But ask him what is is most proud of, and he’ll tell you it’s how those aero features have been optimized so people can run up to 30mm tires. Because the comfort of the wide tire in combination with unbeatable aerodynamics - the one bike for everything - is his real passion.
Minimalist Crown: Instead of a bulky, unaero crown, we minimize its size. This improves the crown’s aerodynamics and moves the front wheel closer to the downtube, creating a perfect transition for the airflow.
Continuous fiber crown: The integrated carbon bearing race uses a separate ring layup (green), so fibers in the fork crown run more straight from the legs into the steerer for a strong and stiff connection.
Sqaero fork legs: The Sqaero fork airfoil only has a small truncation, perfect to guide the airflow around the front wheel and boost fork stiffness. Different left & right profiles are used to counteract braking forces.
Kinked leg: The Fundi connects all the relevant points (axle, brake mount, crown) the most direct way possible, achieving a low weight and a minimal frontal area with visually striking design.
Integrated adaptor: The Fundi supports flat mount disc brakes with 140/160mm rotors. The disc adaptor to switch between 140 and 160 is completely integrated into the left fork leg shape.
Syntace x-12 thru axle: The best for stiffness and aerodynamically integrated. With practice, you can also remove them quickly. Adding a quick-release to save a second once in a blue moon would make no sense.
AEROFLEX: Bike frames are inherently stiff vertically, and the right tires offer much more comfort than a frame ever can. But we eke out a few last percent with our extremely thin (=aero & comfortable) seatstays.
DISC BRAKE ONLY: We don't want to compromise weight, stiffness and aerodynamics by combining disc & rim brake versions in one frame platform, so everything on the STRADA is fully optimized for flatmount disc brakes only.
HIDE-RATION: The STRADA downtube is shaped to hide the water bottles from the airflow. The fastest set-up is one bottle low on the downtube, the “team-leader” configuration. Second-fastest set-up is with two bottles.
|Frame material||Unidirectional carbon|
|Frame weight (+/-3%)||1005g (Medium, frame-only)|
|Fork weight (+/-3%)||395g|
|Fork||Fundi TEAM flat mount disk brake for 12mm thru axle|
|Headset||1 1/4" - 1 1/8" Integrated tapered IS42/28.6 | 47/33|
|Seatpost||3T Charlie Sqaero Strada (CHARLIE EXPLORO is NOT compatible with the STRADA frame)|
|Thru-axles||3T custom length Syntace X-12: 142x12mm rear, 100x12mm front|
|Front brake||Flatmount integrated for 140 & 160mm disc|
|Rear brake||Flatmount for 140 or 160mm disc|
|Cable routing||Internal via interchangeable FlipTop covers for 2x Di2, eTap and EPS|
|Tire clearance||Effective width: 30mm, Wheel radius: 344mm. More info|
|Finish||Gray with black logos|
|Included in box||Frame, fork, headset, seatpost, seatpost internal clamp, front and rear thru axle, 2 rear derailleur hangers, noise-cancelling foam sleeve to cover shifter cables and brake hose.|