Crankhd Page

: In this design, the spindle is permanently attached to one of the crank arms (usually the drive side), simplifying installation and increasing stiffness. Engine Crankshafts

: The most standard modern setup, consisting of a left arm, a right arm, and a separate spindle . They typically use square-taper or splined (like Shimano Octalink) interfaces. CrankHD

: Common on older American-made bikes and children's BMX bikes. A single piece of forged steel forms both arms and the axle. : In this design, the spindle is permanently