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We met an anonymous traveller who was shadowing RAAM for more than 2500 miles of the journey. Inspired by watching RAAM on television, his unsupported bike ride across the country took him from Grand Junction , Co to Virginia Beach, VA on a mountain bike. Hats off to this adventurous soul. In his own [...] If you’ve been wondering what was happening with Aerolab lately, here’s the scoop. I’ve been at work developing Chung-On-A-Stick, a planar velocity sensor for doing virtual elevation work. It’s involved a lot of time, some extremely good friends, and a few dollars but things are finally coming together nicely. With any luck, we’ll [...] Thanks to Adrien Gontier of Roues Artisanales and David Linke, I am able to provide you with a unique database of moments-of-inertia and effective rotational masses of a large number of wheelsets. The data allows greater accuracy for VE, a virtual elevation perl script I wrote. The big surprise is that [...] The method of Virtual Elevation and all its variants are derived from Newton’s 2nd Law for linear motion, neglecting rotational inertia terms. Do those additional terms play a significant role in elevation-matching? Can we accurately measure the moment of inertia (MOI)? In this post, I’ll describe the terms and provide a [...] In trying to create a prototype for Golden Cheetah, I put together this perl script that I submit for your perusal. The script comes with the sample data used by Robert Chung in his recent post to the Wattage Forum, so it may look familiar to many of you. My aim was to match a known [...] |
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