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Roshe Nike Mens Shoes

Roshe Nike Mens Shoes

Physical exertion Nike Roshe Run Mens Running Shoes

Roshe Nike Mens Shoes

adamtj 1435 days ago link

Biopace like designs returned to the PRO peleton a few years ago, though the shapes are a bit more radical.

Roshe Nike Mens Shoes

"People are so resistant to innovation" is one way to look at it. Roshe Run Infrared

I was riding a bike the way I was accustomed to pedaling but the power output would surge because of the change in mechanical advantage. Maybe I could relearn how to pedal so I could take advantage of Biopace but I really just wanted to ride, not maximize every degree of the pedal arc.

eru 1435 days ago link

Isn't your analogy in the last paragraph a good argument in favour of non circular gears? Gears that allow you to output the same amount of power all the time.

adamtj 1435 days ago link

Roshe Nike Mens Shoes

eru 1435 days ago link

I wonder if creating a vertical elliptical pedal path

equals power. You can't have the same power with less physical exertion. It's a trade off between aerobic capacity and anaerobic capacity. You can pedal in a high gear, using more strength, or you can pedal faster in a lower gear, maintaining the same speed, but using more cardiovascular capacity. It effectively shifts down in that part of the pedal stroke where you have the least strength. Since the bike doesn't slow down, your feet must speed up. Shift down and spin your feet faster. You'll use less strength, and more aerobic capacity, enabling you to maintain an equivalently high power output, but for longer. It's easier to run a marathon at a constant speed than to sprint 100 m at a time, taking walking breaks to maintain the same average speed.

I've seen comments about gear changing being slightly worse (which doesn't surprise me) and being overshadowed by things like moving from clips to SPD pedals.

Roshe Nike Mens Shoes

Roshe Nike Mens Shoes

adolph 1435 days ago link

Roshe Nike Mens Shoes

I've usually found pedalling mostly downwards inefficient, because it pushes me off the seat. If I want to get Roshe Nike Mens Shoes power out of pedalling, I put particular care into pedalling back and forth the top foot forwards, the bottom foot backwards. For this to work well, though, you need pedal straps or very toothy pedals. .

It's my understanding that the pros don't use this. If you don't have enough torque, you're probably doing it wrong, and would soon be out of gas even with more mechanical advantage. Shift down, pedal faster.

schultzor 1435 days ago link

Roshe Nike Mens Shoes

Roshe Nike Mens Shoes

The real question is whether or not the complexity is manageable, will it break Roshe Run Urban Safari

arethuza 1435 days ago link

down frequently? etc.

bmj 1435 days ago link

Roshe Nike Mens Shoes

Oval chainrings (like Biopace, Rotor Q Rings, etc.) are used by some pro cyclists. The oft touted advantage for the system is the elimination of the "dead spot" at the top of the pedal stroke, but it still seems to very much be a case of personal preference. If you can generate the same power with less physical exertion, and no significant reduction in reliability or weight, why not take it?

If you want to really muse about missed innovations, look at recumbent bike designs. Every one uses upright bikes today.

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