uart wrote:Was it really stop and do it manually?
I'm sure with the right technique it was doable by foot whilst in motion. Much like shifting without indexing or 'clipping in' to traditional toe clipped pedals are a dying art for a lot of people these days.
You have to remember this bike was a pretty specific, customised build for a very experienced rider performing a pretty unique riding feat. This isn't what you'd call a regular consumer type set up for its day.