Bike Fit Arsenal: Rock ‘N’ Roll Spin Scan
One of my recent quests has been to acquire a side-to-side rocking bike trainer to replace the Computrainer currently used on my bike fitting platform. The reason is simple: more realistic rider motion that mimics two-wheeled balancing on the road. It also aids in seeing functional asymmetries which i’ll talk about in a later post. The sticking point was that I prefer to keep core software features of Computrainer such as Spin Scan, which is software that quantifies pedaling efficiency and power distribution between each leg. Inevitably this meant Computrainer hardware had to be rigged onto a new setup if features like Spin Scan were to be retained on a side-to-side rocking frame. Steve Hogg found a clever way himself which involves a Lemond Revolution connected to a Velotron. This method works great, but a more affordable yet effective solution was needed in my case. Eventually the idea came to mind; mount a Computrainer load generator onto a Kurt Kinetic Rock and Roll frame. In theory it made sense, so with the help of two cycling friends, one an industrial designer, the other a power equipment service manager with a garage filled with tolls, we made it happen. Before I illustrate, check out what the Rock and Roll does in this video clip: (skip to 2:09)
So the job was to make an adapter which allowed us to:
And there you have it! Works great and now added to the Bike Fit Arsenal. Rock and Roll Spin Scan.