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high-modulus:
Calfee Design:
Calfee Dragonfly Pro Di2 Internal Integration – pearl white:

This Dragonfly Pro, outfitted with Calfee’s proprietary internal Di2 solution and a full-carbon BarStem, was built for a cyclist in Texas.  We hope to squeeze it into our booth at NAHBS.  This bicycle, with it numerous innovations and striking finish, is a stirring example of our carbon craftsmanship.

Serotta:
Serotta MeiVici SE:
You’re right. This does not look like most of the bikes in the pro peloton. That’s because singular focus of the MeiVici is performance. There simply is no other carbon bike on the road that offers the same degree of individualized performance engineering as the SE. Our industry-leading carbon fiber optimization technology built into our revolutionary, rider-specific Torsion Core™, Colorado Concept platform allows us to dial up drive-train stiffness as far as specified without sacrificing in vertical compliance and vibration damping properties. Other bikes may make you look more like a pro, but hands down, no bike while make you ride more like a pro than the MeiVici SE.
Like every Serotta, the MeiVici SE is fully crafted from the ground up in our US facilities
Name on top tube and head badge included. DI2 Internal on request.
In addition, this one belongs to Serotta Director of Sales, Steve Fairchild and pays homage to all those that are fighting the good fight against cancer. Special SRAM Tour De France kit and soft clear matte finish.
Serotta:
Serotta HSG SuperComp:
New for 2011, the HSG SuperComp is simply a cut above the competition. No detail is overlooked including the light yet rugged anti-galling titanium rear drop outs in creating this hard-core race machine for the real world. Sure, with our new finish options these bikes look faster than ever, but what’s more important is that Serotta Composites engineering designs and produces these bikes to go fast and be ridden hard, again and again, race after race, season after season. The HSG Custom combines full customization with the innovation of Serotta’s industry-leading carbon fiber technology. Rider-specific Torsion Core Colorado Concept tubing platform and multi-modulus (MML) construction allows Serotta engineers to optimize drive-train stiffness while minimizing vibration induced fatigue. The HSG SuperComp. Built to last, engineered to win.

Serotta:
Serotta Coeur d’Acier:

Coeur d’Acier.  As the name implies, this bike has a heart of steel, but a ride that sets the gold standard in performance.  Awe inspiring drive-train acceleration while the Serotta Composites rear carbon stay and F3 fork provide vibration damping that is simply not found on other steel bikes.  In fact most people who first ride the ‘CdA’ wonder if its titanium.  Lightweight, versatile, fully rider tunable and 100% handcrafted in the USA.  One ride and you’ll wish you had discovered the feel of Serotta steel sooner

Calfee Design:
Calfee Dragonfly Pro:

Dragonfly; our lightest and most technically advanced frame.

The Dragonfly tube set was designed to build the lightest possible single and tandem bicycle frames without sacrificing stiffness, durability and ride quality. We use high modulus carbon fiber in all the tubes (55 msi) as well as the lug areas (42 msi). Previously, a frame built with all high modulus fiber would be too brittle. We incorporated Boron fiber into the three main tubes to add some toughness and compressive stiffness.  Boron is an attractive reinforcement because the resulting composite combines superior tensile, compressive and flexural strengths, high modulus, and low density in one system.  Combined with the super high tensile stiffness of the carbon, the result is a frame material with the highest stiffness-to-weight ratio on the market.

The use of boron fiber has come of age with its use in our high performance bicycle frames. Bicycle weights have dropped from 18 pounds back in the 1980s to 14 pounds or less in 2010. Much of this weight savings comes with the use of carbon fiber composites. As bicycle companies compete in the arms race to make even lighter, stiffer bikes, safety and durability are pushed to the limit. High modulus (55 Msi and greater) carbon fiber is being used to make stiff yet thin walled tubing. These tubes can be vulnerable to damage from a variety of real world sources. When slightly damaged from a pebble thrown up by a passing car, or an unfortunate event during a group ride or race, a thin walled tube can rapidly degrade to an unsafe condition. Our very popular Calfee Carbon Repair business is evidence of this common failure. Using boron filaments in the tube laminate mitigates this problem by significantly enhancing the tubes structural performance.

Calfee Dragonfly weighs only 2.1 pounds in a 54cm size, delivers power as well as any large diameter, thin wall frame, has superior vibration dampening, compressive and impact strength, and is protected by a 25 year warranty.

Dragonfly single and tandem lugs are pressure molded from high modulus fabric.  With Dragonfly singles, lugs are made with carbon fabric formed around metal mandrels.  These lugs and pre-mitered tubes are easily bonded together because they are so compatible.  The carbon fibers are carefully oriented to put strength exactly where it’s needed while minimizing weight.  Gussets are integrally formed with the fabrication of the joints, eliminating the inherent weakness of the tube and lug joint found in many other manufacturers designs.  They are then meticulously carved to the optimum shape, taking into consideration the weight and intended use by the rider. They happen to look good because of their form-follows-function aesthetic.

The dropouts are also carved out to their optimal shape, saving 15 grams off the standard dropouts. This may not seem like much, but the way to build a 12 pound bike is to address every component and look for opportunities for weight savings, no matter how small. The trick is to do it without sacrificing strength and durability. As in nature, the Dragonfly is one of the most optimized and evolved structures to be found.