Compartmentalized Riding Trowel Cvt Clutch Module

A modular, compartmentalized continuously variable ratio transmission adapted to be coupled between the drive motor of a dual rotor riding trowel and the lower trowel drive train that operates the trowel rotors, the transmission comprising:

• a first rigid, generally planar frame plate comprising a clearance orifice for admitting a portion of the trowel internal combustion engine enabling the coupling of the module to the trowel engine;
• a second rigid, generally planar frame plate spaced apart from said first frame plate in generally parallel relation therewith;
• an interior region defined between said first and second frame plates forming a compartment for gear reduction components;
• a plurality of spacers extending between said first and second frame plates for maintaining them in spaced relation;
• a PTO stub shaft for inputting power;
• a first pulley splined to said stub shaft;
• a second pulley having a diameter less than said first pulley diameter, said second pulley spaced apart from said first pulley and coupled thereto by a drive belt;
• said second pulley journalled for rotation between said first and second frame plates;
• a first jackshaft driven by said second pulley;
• a third pulley comprising a variable CVT drive affixed externally of the module driven by said first jackshaft;
• a fourth pulley comprising a second CVT variable drive coupled to said third pulley by a belt;
• a second jackshaft splined to said fourth pulley;
• a fifth pulley driven by said second jackshaft;
• a sixth pulley having a diameter greater than the diameter of said fifth pulley, and coupled thereto by a belt;
• said sixth pulley driving a pair of gearbox drive shafts adapted to be coupled to trowel rotor drive inputs.