Driven clutch for continuously variable transmission

A driven unit for a continuously variable transmission, comprising:

• a post extending along a drive axis from a proximal end to a distal end;
• a stationary sheave extending from a distal portion coupled to a distal portion of the post to a proximal portion defining a first belt contact surface and a first plurality of fins;
• a helix assembly comprising:
• a roller sleeve circumferentially surrounding and coupled to at least a portion of the post between the proximal end and the distal end of the post;
• a plurality of roller assemblies each including a roller post extending radially outward from a proximal end coupled to the roller sleeve to a distal end coupled to a roller;
• a helix comprising a sidewall extending circumferentially around and coupled in an axial sliding engagement to at least a portion of the roller sleeve, the sidewall defining a plurality of roller tracks, wherein each respective roller track is configured to receive in a sliding engagement a respective roller,
• a spring cup extending radially from an inner portion coupled to a proximal portion of the helix to an outer portion defining an axially extending lip;
• a spring extending from a proximal end coupled to the spring cup to a distal end;
• a helix sleeve extending circumferentially around the helix, wherein the helix sleeve is configured to retain a fluid in the helix assembly;
• and
• a movable sheave extending axially from a distal portion coupled in sliding engagement to the roller sleeve to a proximal portion defining a second belt contact surface and a second plurality of fins, wherein the distal end of the spring contacts at least a portion of the distal portion of the movable sheave and is configured to apply a spring force urging the movable sheave toward the stationary sheave, wherein a medial portion of the movable sheave defines a cavity configured to receive therein at least a portion of the helix assembly.