Motorcycle

A motorcycle comprising

• a frame comprising:
• a main frame having a head tube, left and right upper main tubes extending rearwardly from the head tube to a main upper cross tube, and left and right midframe legs extending downwardly from the main upper cross tube, the head tube having a head tube axis, the main frame having a longitudinal mid-plane;
• and
• a sub-frame fixedly connected to the main frame and extending rearwardly from the main frame, the sub-frame having left and right upper sub-frame tubes each extending rearwardly from an upper sub-frame connection point where the upper sub-frame tube connects to the main frame, with a riding waist defined between the left and right upper sub-frame tubes, the sub-frame having left and right lower sub-frame tubes each extending rearwardly from a lower sub-frame connection point where the lower sub-frame tube connects to the main frame, with a sub-frame connection spacing defined between the upper sub-frame connection point and the respective lower sub-frame connection point, and with a main frame span distance being defined between the head tube axis and a centerline of the lower sub-frame connection points, measured within the longitudinal midplane and perpendicular to the head tube axis;
• wheels connected to the frame, the wheels comprising a front wheel rotating about a front wheel axis and a rear wheel rotating about a rear wheel axis, with a wheelbase defined as a distance between the front wheel axis and the rear wheel axis, and with a wheel axis plane defined as a plane containing the front wheel axis and the rear wheel axis;
• a prime mover assembly coupled to at least the rear wheel in a transmission mode;
• and
• a vehicle body cover comprising a straddle-type seat cushion at least partially arranged above the sub-frame and the main frame;
• wherein a sub-frame connection spacing/main frame span ratio of the sub-frame connection spacing divided by the main frame span distance is in the range from 0.16 to 0.24.

A motorcycle comprising

• a frame comprising:
• a main frame having a head tube, at least one upper main tube extending rearwardly from the head tube, at least one midframe leg extending downwardly from a rear end of the at least one upper main tube, and a main frame bottom mount section fixed to a bottom end of the at least one midframe leg, the main frame bottom mount section having left and right outside bottom mounts, left and right inside bottom mounts and a bottom mount crossbar, wherein the left and right inside bottom mounts each comprise a prime mover assembly mount flange, a rear shock absorber mount flange and a kickstand mount flange, the head tube having a head tube axis, the main frame having a longitudinal mid-plane ;
• and
• a sub-frame fixedly connected to the main frame and extending rearwardly from the rear end of the at least one upper main tube, the sub-frame having left and right upper sub-frame tubes each extending rearwardly from an upper sub-frame connection point where the upper sub-frame tube connects to the main frame, with a riding waist defined between the left and right upper sub-frame tubes, the sub-frame having left and right lower sub-frame tubes each extending rearwardly from a lower sub-frame connection point where the lower sub-frame tube connects to the main frame, with a sub-frame connection spacing defined between the upper sub-frame connection point and the respective lower sub-frame connection point, and with a main frame span distance being defined between the head tube axis and a centerline of the lower sub-frame connection points, measured within the longitudinal midplane and perpendicular to the head tube axis;
• wheels connected to the frame, the wheels comprising a front wheel rotating about a front wheel axis and a rear wheel rotating about a rear wheel axis, with a wheelbase defined as a distance between the front wheel axis and the rear wheel axis, and with a wheel axis plane defined as a plane containing the front wheel axis and the rear wheel axis;
• a prime mover assembly coupled to at least the rear wheel in a transmission mode;
• and
• a vehicle body cover comprising a straddle-type seat cushion at least partially arranged above the sub-frame and the main frame;
• wherein a sub-frame connection spacing/main frame span ratio of the sub-frame connection spacing divided by the main frame span distance is in the range from 0.16 to 0.24.