Dartfish is a multi-camera based system (and it is very visual and an excellent tool to help athletes see and understand their posture and technique through dynamic video feedback and assessment tools. When setup well, Dartfish is an impressive tool. The drawback is that few fitters take the time to understand or build out Dartfish to its potential. The benefit of the system not being cycling specific is that a fitter can turn Dartfish into just about anything they want or need from an analysis perspective. The Purely Custom Size Cycle thus does what we feel any great tool should – make the process smoother and quicker without interfering.ĭartfish is a 2D motion capture system that is not cycling specific. There is nothing about a bike fitting that should be on ‘auto pilot’. Bike fitting is a human process part science and part craft with a crucial communications element. We have always known that the most important part of a quality bike fitting is the fitter, not the tools and some of the fully automated systems try to allow a bike fitting to be put on ‘auto pilot’. Our Purely Custom Size Cycles are specially made for Fit Werx and include belt drive and a CompuTrainer spin analysis unit as well as adjustable sizing cranks.
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We selected the Purely Custom’s Size Cycle as it bridges the benefits of a manual unit with those of a fully automated unit quite well. There are a number of quality size cycles on the market now ranging from fully computer automated units like those from Guru to basic relatively inexpensive units like older model Serotta size cycles. An adjustable size cycle is the mainstay of almost any quality bike fitting as it allows the fitter to fit the rider without the constraints or inconveniences of an existing bicycle getting in the way of the process.