Geometry of Bike Handling

How bike geometry measurements affect stability : Rake and Trail: Bike Fork Rake explained - this is also known as Offset, which more accurately describes what it is: the hub’s offset from the steering axis. Not to be confused with the curvature of the fork blades, which some people think of as “rake”. Straight blade forks can have plenty of offset. Fork offset determines trail when considered with head angle (and the diameter of the wheel). Trail is best thought…

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More about the Tetra Classic

Even bicycle enthusiasts and industry insiders are surprised to learn that Tetra was invented back in 1987 and only four years later was being ridden by Greg LeMond and his Team Z teammates in the world’s most important cycling event, the Tour de France. Today, nearly 30 years later, Tetra tubing and bicycle frames have been continually optimized; sharpened by improvements in raw materials, manufacturing processes and advantageous frame options. With the Tetra frames, we saturate carbon fabric with epoxy,…

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More about the Dragonfly Classic

How did we do?  Please read the review of our Dragonfly published in the June 2011 issue of Road Bike Action.  Zap, Editor of Road Bike Action, picked our Dragonfly as Bike of the Year in their January 2012 issue.  On the heels of this honor, they asked us to build the frame module, a Calfee Adventure, for a gravel road project bike; the 10 page feature was published in the October, 2012 issue and the results are in; RBA…

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More about the Dragonfly 44

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 2014. 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 (66 Msi and greater) carbon fiber is…

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Technical Paper-Materials

Introduction Twenty years ago, choosing a road racing bicycle frame was simple...and limited. For light weight and a smooth ride there were Columbus SL and similar light gauge steels. Large powerful riders who needed more frame strength put up with the weight and harsh ride of Columbus SP or similar stout steel. Custom frame builders could tune the feel of a bike by mixing tubes, using stronger ones where needed and paring weight elsewhere. For aluminum, the choice was between…

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Frame Measurement Terminology

Standard frame measurement terms ST: Seat Tube: Measured from the center of the bottom bracket along the center to a point near the seat post binder. The exact location of this point may vary between manufacturers depending on the frame design. The main purpose of this would be as a reference point and, if located at the seat binder, would indicate whether your favorite seat post would be clamped above the minimum insertion line. TT: Top Tube: Measured from the…

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More About Adventure Models

Calfee Adventure/Gravel Vision Founded upon the DNA from our road frames, we designed our Adventure platform to be as versatile as you. Available in all of our models and tubesets, we build each frame to accept 700c, 650b, or both. The slackened head-tube allows for confidence on loose gravel roads, but with all the performance features to keep-up on the weekend group ride. Further, if you prefer randonneur or bike-packing Adventures with frame bags, fender or rack mounts, you will…

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More about the Calfee BarStem

BarStem Order Form Introduced in 2010, our full-carbon BarStem features a Calfee-sourced bar and stem modified by Calfee. This full-carbon BarStem is lighter and eliminates the need to bond an aluminum clamp to a carbon stem extension. Unlike competing products, our one-piece BarStem allows the marriage of personalized and optimized individual components; lighter, stiffer, stronger, more absorbent and better fitting. ITEM: PRICE BarStem Lamination Only - customer supplies bar and stem $300 Calfee Stock BarStem with Nude (Raw Carbon) Finish…

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Carbon Fiber Integrated Front Rack

A carbon frame bike rack fully integrated by our carbon experts, super strong, light as a feather and beautifully crafted. Carbon Integrated Front Fork Rack Cyclocross specific thru-axle forks only395mm to 400mm axle to crown forksCost with Calfee supplied fork (nude finish)$250Cost with Customer supplied fork (nude finish)$350Cost to repaint fork (see stock colors)$125Cost to repaint fork custom colorCall for an estimate Calfee Design 1-800-965-2171

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Adaptive Cycling Components

Over the years, Calfee Design has helped numerous cyclists optimize comfort, fit and performance to better adapt to the bicycle.  Recreational cyclists and athletes that perform at the highest level of the sport have all benefited from our unique design and manufacturing services. Do you require a custom frame with non-traditional geometry?  Do you require a custom adapted handhold or handlebar?  We are very happy to review your requirements, then design and manufacture the solution; custom, adaptive frames and components…

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