> Regenerative braking followed by assisted pedalling out of the corners would be a huge win. ...Until the next ascent, where you have to haul the weight of th

> Regenerative braking followed by assisted pedalling out of the corners would be a huge win. ...Until the next ascent, where you have to haul the weight of the battery and what amounts to two electric motors uphill... Although it seems sacrilegious to imagine energy-recovery units in UCI bicycle racing, innovation is strongly influenced by the big manufacturers who are trying to sell bikes. It's unlikely there will be a UCI-sanctioned ERU any time soon, but if there was, the key to adoption would probably be the UCI minimum weight regulations. We are now at the point where high-end bikes often need weights added to meet the minimum, and if the rest of the bike ever gets light enough, it could be possible to add an ERU without compromising the total weight for climbing. But that would require breakthroughs in the culture of bicycle racing and multiple technologies.