Performance Calculations

Engine to Wheel

WC=wheel circumference (in meters)
RPM=revolutions per minute (engine)

A=large sprocket (rear wheel)
B=Clutch (on engine crankshaft)

*No load speed*

[ RPM/(A/B)] X WC X 0.0375 = speed in mph

@ 3600 RPM (Max RPM)

100 tooth sprocket-12 tooth clutch -700mm tire

[3600/(100/12)] X2.15 X 0.0375 = Max speed = 34.83 MPH

1000 RPM = 9.67 MPH
2000 RPM = 19.35 MPH
3000 RPM = 29.02 MPH
4000 RPM = 38.702 MPH

Engine to Shaft to wheel

WC=wheel circumference (in meters)
RPM=revolutions per minute (engine)

A=large sprocket (jack shaft)
B=Clutch (on engine crankshaft)
C=Freewheel (Drive Tire)
D=Intermediate sprocket (jack Shaft)
*No load speed*

[ RPM/(A/B)(C\D)] X WC X 0.0375 = speed in mph

@ 3600 RPM (Max RPM)

92 tooth intermediate sprocket-12 tooth Clutch -32 tooth freewheel-24 tooth intermediate sprocket-37 inch Tire

[3600/((92/12)(34/24))] X2.2 X 0.0375 = Max speed = 27.4 MPH

1000 RPM = 7.6 MPH
2000 RPM = 15.2 MPH
3000 RPM = 22.8 MPH
4000 RPM = 30.4 MPH