Calvin's Corner
Mechanical musing and industry insights from Park Tool Director of Education Calvin Jones.
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Written by Calvin on August 23, 2010/Calvin's Corner
Ride 2 Recovery: Great Lakes Challenge
The Ride 2 Recovery is a non-profit organization that sponsors rides around the USA for injured military veterans. Ride 2 Recovery considers cycling an important part of the recovery process. It is something most all of the patients with mental and physical disabilities can participate in, and it's just fun.
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Written by Calvin on August 17, 2010/Calvin's Corner
Measuring Up
How we choose to measure things is important. Most of the world uses the metric system of measurement. While the metric system is based on a standard meter, for mechanical uses such as on bicycles, it is will help to understand metrics better if you consider the millimeter the basic unit.
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Written by Calvin on June 22, 2010/Calvin's Corner
Cities, Bicycles, and the Future of Bells
Bike gatherings are always of interest, at least to bike-minded people. In the middle of June there was something of a "gathering of tribes" in the Twin Cities, Minnesota area. The Nature Valley Grand Prix was in town. Cyclists clad in bright Lycra from all over the USA and the world are competing here in a grueling five-day race. The bikes are sleek, the athletes fit, and everyone shares a common goal... to WIN!!
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Written by Calvin on October 21, 2009/Calvin's Corner
Getting a Sense of the Problem
In bicycle repair, or any other mechanical work for that matter, we should bring to the table our five senses. We need as much input as possible in order to process the data and come to a resolution on the issues before us. This article will expatiate upon the "five senses" and how they facilitate our ability to diagnose and repair. There are some that may advocate for a sixth sense, but you will not find me among them.
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Written by Calvin on September 14, 2009/Calvin's Corner
Campagnolo® Ultra-Torque™ and Record® Group
As manufacturers release new groups and components, there are often new features that require new service procedures. This article will discuss the newer component groups available from Campagnolo®.
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Written by Calvin on May 1, 2009/Calvin's Corner
CYCLING... the book
With the arrival of summer, it is prime time for good riding and fine reading. In this edition of Calvin's Corner I will provide a book report of a tome which influenced me, and my way of thinking. It is sometimes long after reading a piece of literature, and then by rereading it, does it become clear what it means to you. Such a book is CYCLING, published by the C.O.N.I. (Comitato Olimpico Nazionale Italiano), Rome, Italy.
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Written by Calvin on February 28, 2009/Calvin's Corner
Gore® Ride-On® Cable Installation
This article will describe the installation of the Gore® Ride-On® cable system. This is a cable housing system that relies on a tubing system to seal the inner shifting or brake wire, thereby preventing dirt and water from entering. The system is composed of housing, a full length removable liner tube, a coated brake (or shift) wire, end caps (ferrules) for both frame housing stops and component housing stops, "grub" seals for ends of the wire system, cable end crimps, and crimp covers.
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Written by Calvin on September 30, 2008/Calvin's Corner
Shimano® Coasting System
This article will discuss the Shimano® "Coasting" system. The Coasting system uses a 3-speed internal hub. The shifting is done automatically the "Automatic Unit." The electricity to operate the Automatic Unit comes from the dynamo (generating) front hub.
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Written by Calvin on August 26, 2008/Calvin's Corner
Thinking About Your Ride
The optic of this article will be on the relationship of the human body with the bicycle. There is both an art and science to placing and positioning the human body on a bicycle for maximum performance. This article addresses you as a casual cyclist rather than as the elite level cyclist, who must concentrate on maximum performance. It asks you to think about how you sit on a bike. You will enjoy riding more by using common sense, paying attention to how you feel, and by using trial and error in your positioning.
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Written by Calvin on August 8, 2008/Calvin's Corner
This I Believe
It is difficult to go through life and not wonder if you are doing anyone any good. As the 2008 Olympic Games begin, it gives me pause to think about what I have done, or not done, for, well, the world.
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