BigBallinStalin wrote:How are those cables from the bike attached to the rotary 'blades'?
I assume you are asking how they convert the power in the bike to power at the blades?
Its basically a series of pistons to rotational motion not dissimilar to your car.
Piston Action (legs on bike) -> Rotational Action (cog on bike) -> Piston Action (tension cables between bike and blades) -> Rotational Action (blades).
You cant apply the rotational force directly since you have four individual blades to power. I imagine they have some kind of system where you apply force to two blades on your right leg downstroke and the other two on your left leg downstroke.
I go to the gym to justify my mockery of fat people.