COMET TAV2 Torq-A-Verter 40 10 3/4″ 218353A

Replaces centrifugal clutch system and boosts performance, Clutch is asymmetric-type torque converter system with asymmetric sheave faces; this makes it possible to force the belt to a diameter within the drive clutch (at high rpm) that exceeds the usual 1:1 drive ratio, TAV2 system can actually attain a .90:1 ratio (10% overdrive), Movable sheave face is 18, stationary sheave is 2.5, for a collective angle of 20.5, For use with 2- and 4-cycle engines up to 8hp