3 ms·

It is not about "leg issues", it is also about you mind needs to control your leg. And about your fuel costs: software can regulate power much more precise, spe

by ordu 5y ago

It is not about "leg issues", it is also about you mind needs to control your leg. And about your fuel costs: software can regulate power much more precise, speed becomes virtually constant, no acceleration means no changes in a kinetic energy, so less fuel is needed. Top bicycle athletes spend many hours learning how to pedal to minimize accelerations due to cyclic nature of pedaling. With a car it seems easier (all you need is to keep your foot steady, not to maintain constant torque while switching from one leg muscle to another) but I cannot do it. Cruise control beats me every time.

hermitdev 5y ago
> Top bicycle athletes spend many hours learning how to pedal to minimize accelerations due to cyclic nature of pedaling. To expand on this: it's about maintaining a specific cadence (usually in the 100-110 RPM range). You don't change your cadence for the terrain; you maintain your cadence and change gears to match the terrain.
- ordu 5y ago
  Yes, you need to maintain cadence, because of reasons, like saving your knees from wearing off. But if you want to win Tour de France, then you need to learn how to maintain constant speed also. Not just visually constant, not just as your computer shows, but even more constant. Speed deviates, it depends on a phase of your pedaling, but it means excessive watts lost due to visually undetectable accelerations. Constant cadence and constant speed are different goals, the first one is about biology (how to get your body to do more), the second one is pure physics. Maybe it is even "anti-biological" thing, because human's legs are designed to push, not to pull and not to create force perpendicular to a leg. I even heard something about using gears that are not exactly circular, to help an athlete to maintain constant tension of a chain. Amateurs (me for example) do not train for constant speed, though to some extent it comes naturally with practice. But world class athletes measure energy conversion inefficiencies in tenths of a watt, so they get a special training for this.

by ordu 5y ago

hermitdev 5y ago

> Top bicycle athletes spend many hours learning how to pedal to minimize accelerations due to cyclic nature of pedaling. To expand on this: it's about maintaining a specific cadence (usually in the 100-110 RPM range). You don't change your cadence for the terrain; you maintain your cadence and change gears to match the terrain.

ordu 5y ago
Yes, you need to maintain cadence, because of reasons, like saving your knees from wearing off. But if you want to win Tour de France, then you need to learn how to maintain constant speed also. Not just visually constant, not just as your computer shows, but even more constant. Speed deviates, it depends on a phase of your pedaling, but it means excessive watts lost due to visually undetectable accelerations. Constant cadence and constant speed are different goals, the first one is about biology (how to get your body to do more), the second one is pure physics. Maybe it is even "anti-biological" thing, because human's legs are designed to push, not to pull and not to create force perpendicular to a leg. I even heard something about using gears that are not exactly circular, to help an athlete to maintain constant tension of a chain. Amateurs (me for example) do not train for constant speed, though to some extent it comes naturally with practice. But world class athletes measure energy conversion inefficiencies in tenths of a watt, so they get a special training for this.