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does anyone know if subtitles exist for this?
Have you tried to contact the author or production house? Translation work may have been done already, or they might be interested in the idea. I've watched the documentary earlier and even though it's nearly 10 years old, it is it is a very nice take on INSEP and French elite track cycling as it was (and unfortunately still is) in the 00's.
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This one has been fulfilling my needs at the track: http://www.bikecalc.com/fixed
As a bonus, the "Speed at Cadence" feature is perfect for backtracking cadences at given flying 200m speeds.
I'll take the Sapphire M if you don't mind shipping it to EU.