Coaxial load wheel and cranks

An exercise machine comprising;

• a base;
• an axle rotationally supported on the base;
• a first crank operably coupled to a first end portion of the axle;
• second crank operably coupled to a second end portion of the axle;
• an active wheel fixedly mounted to the axle and rotational synchronously therewith, wherein the active wheel is rotationally driven by the first and second cranks;
• a small wheel operably coupled to the active wheel and rotationally driven thereby;
• a large wheel operably coupled to the small wheel and rotational synchronously therewith;
• a load wheel rotationally mounted to the axle and rotational relative to the axle and the active wheel, wherein the load wheel is operably coupled to the large wheel and rotationally driven thereby;
• a first transmitting element operably coupling the active wheel to the small wheel;
• and
• a second transmitting element operably coupling the large wheel to the load wheel.

An exercise machine comprising:

• a base;
• an axle rotationally supported on the base;
• a first crank operably coupled to a first end portion of the axle;
• a second crank operably coupled to a second end portion of the axle;
• an active wheel fixedly mounted to the axle and rotational synchronously therewith, wherein the active wheel is rotationally driven by the first and second cranks;
• a small wheel operably coupled to the active wheel and rotationally driven thereby;
• a large wheel operably coupled to the small wheel and rotational synchronously therewith;
• a load wheel rotationally mounted to the axle and rotational relative to the axle and the active wheel, wherein the load wheel is operably coupled to the large wheel and rotationally driven thereby;
• and
• a passive wheel coaxially connected to the load wheel and rotational synchronously therewith, wherein the large wheel is operably coupled to the load wheel via the passive wheel.

An exercise machine comprising:

• a base;
• an axle rotationally supported on the base;
• a first crank operably coupled to the axle;
• a second crank operably coupled to the axle;
• a drive wheel unit comprising an active wheel coaxially mounted to the axle and rotational synchronously therewith, wherein the active wheel is rotationally driven by movement of the first and second cranks;
• a passive wheel unit comprising a load wheel coaxially mounted to the axle and rotational relative to the axle;
• and
• means for stepping-up rotation of the load wheel relative to the active wheel.