Cervelo R3 2011 Frameset

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The original R3 has set the standard for lightweight yet stiff, strong and comfortable frames over the past five years. Its super-thin seatstays, Squoval tube shapes and in-house developed layup were a major leap forward in frame design. The completely re-engineered 2011 R3 takes another leap. The BBright system almost DOUBLES the already impressive BB stiffness and the tapered 1-3/8th tapered FK30 fork tracks like no other. The lab numbers are impressive, but experiencing one on the road is even more amazing. Characteristics: Low weight to help your climbing. Torsional stiffness for safety and confidence while descending. BB stiffness to not waste any energy. Vertical compliance and vibration damping for comfort on long rides & bad roads. TECHNOLOGY BBright: - Supported by SRAM, Campagnolo, FSA, Rotor, Zipp, Shimano - Wider non-drive side for wider chainstay, seattube and downtube. More Balanced Stiffness (left vs. right) or the frame and crank Normally the right pedal feels stiffer than the left, BBright gives the left an extra boost - Big, 30mm AxleL stiffer & Lighter Squoval - Square tubes have more material far from the neutral axis which reduces side-to-side flex - Round tubes resist torsion better - Squoval has both: Lots of material far from the neutral axis Convex walls & rounded corners improve torsional stiffness & prevent denting and buckling Smartwall for Carbon - Carbon strength & stiffness depend on the size, shape, material & fiber direction of each of the 300+ pieces of carbon in a frame - Cervelo's Smartwall lay-ups are based on 15 years experience and the most advanced tools, including in-house developed optimization software - Smartwall also puts extra carbon on the sides (far from the center plane) to increase stiffness at little extra weight. Optimized Headtube Taper - Many standards exist for the lower headset size: 1 1/8", 1 1/4", 1 3/8", 1 1/2" - Best size depends on stiffness, strength, weight, and aero demands. - Cervelo's R&D shows that for non-aero frames. 1 3/8" is ideal Smaller leads to less stiffness for the same weight Bigger leads to less comfort and less stength in frontal impact Front Boomerang Construction - The size of a complete 1-piece front triangle adds complexity to the layuo (many carbon plies in one mold) - Separate toptubes, headtubes and downtubes lead to discontinuous fibers, lowering impact strength - Boomerang is small enough to handle and allows for continuous fibers from toptube to headtube to dowtube Ultra-Thin Seatstays - Cervelo pioneered the ultra-thin seatstays on carbon frames. - They are vertically compliant and vibration absorbing (keeping in mind the frame only plays a minor role in comfort) - Due to their small cross section they are also extremely light - Strong, Light, and Comfortable, an unbeatable combination. Minimalist Front Derailleur Mount - Minimalist Design: 4.8 grams - The front derailleur mount is fully Di2 Compatible - The mount incorporates a stiffer design which improves shifting, in particular with SRAM drivetrains. Reverse Seattube Collar - Minimalist design: 8 grams - Sitting loads push the seatpost rearwards, putting high stresses on the slot and clamp bolt of standard rear-slotted seattubes. - The front slot and pinch alleviate this stress and increase longevity - Seattube is flattened in the rear to make incorrect assembly of the seattube collar impossible Single Bend Cable Routing - The straight line from downtube cable stop to chainstay cable stop for the rear derailleur is evident - Thus the cable only bends in one location and one direction for minimal friction (extra important for the newer drivetrain systems) - The front derailleur cable also has a single-bend path Specifications : Frame Squoval Carbon Tube Shapes Fork FK30 SL - tapered 1 3/8th Headset Cane Creek IS-3 Seatpost 3T DORICO Team Crankset ROTOR 3D+ BBright (Round 53/39) Bottom Bracket Shimano crank adaptor Front Derailleur Braze-On Required Weight (est.) 900 grams (Frame)

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