Bicycle suspension apparatus and related method

A bicycle, including

• a main frame,
• a shock absorbing rear wheel suspension comprising an upper rocker arm and a lower rocker arm, each rocker arm comprising rearward and forward pivot points, and a shockstay having a receptacle to receive a rear wheel axle, the shockstay pivotably connected to the rearward pivot points of each of the upper and lower rocker arms, and
• a chain drive operatively attached to said main frame and to a rear wheel coupled to said shock absorbing rear wheel suspension,
• in which an instant center of said rear wheel suspension tracks a chain torque line, said instant center defined as a point at the intersection of a first imaginary straight line drawn through the rearward and forward pivot points of the upper rocker arm, and a second imaginary straight lute drawn through the rearward and forward pivot points of the lower rocker arm, wherein the instant center is initially located in front of a front wheel axle, and above a horizontal line extending through the font wheel axle when the suspension system is nor compressed, and a perpendicular distance between the instant center and the chain torque line decreases to zero as the suspension is compressed, and
• the chain torque line defined as a parallel line extending along the tension side of the chain while the chain is positioned on chain sprockets of the chain dive.

A bicycle, including

• a suspension system comprising an upper rocker arm and a lower rocker arm, each rocker arm comprising rearward and forward pivot points, and a shockstay having, a receptacle to receive a rear wheel axle, the shockstay connected to the rearward pivot points of each of the upper and lower rocker arms,
• said suspension system tracks a chain force torque line with an instant center,
• wherein said instant center is defined as a point at the intersection of a first imaginary straight line drawn through the rearward and forward pivot points of the upper rocker arm, and a second imaginary straight line drawn through the rearward and forward pivot points of the lower rocker arm and wherein The instant center is located in front of a front wheel axle, and above a horizontal line extending through the front wheel axle when the suspension system is not compressed, and i perpendicular distance between the instant center and the chain torque line decreases to zero as the suspension is compressed, and
• the chain force torque line is defined as a parallel line extending along the tension side of the chain while the chain is positioned on chain sprockets of the bicycle.

A bicycle, including

• a suspension system comprising an upper rocker arm and a lower rocker arm, and a shockstay having a receptacle to receive a rear wheel axle, the shockstay connected to rearward pivot points of each of the upper and lower rocker arms,
• said suspension system tracks a chain force torque line with an instant center,
• wherein said instant center is defined as a point at the intersection of a first imaginary line extending forward from the rear end, along the center, of the upper rocker arm, and a secondary imaginary line extending forward from the rear end, along the center, of the lower rocker am and wherein the instant center is located in front of a front wheel axle, and above a horizontal line extending through the front wheel axle when the suspension system is not compressed and a perpendicular distance between the instant center and the chain torque line decreases to zero as the suspension is compressed, and
• the chain force torque line is defined as a parallel line extending along the tension side of the chain while the chain is positioned on chain sprockets of the bicycle.