Crank, clutch, the gear pair you selected, front sprocket, chain, rear
sprocket, wheel — every body turning at its true relative rate for the
sprockets you pick. How the numbers are made.
Drivetrain bench
Exact ratio math · tooth shape and case layout modeled
TT
Schematic view — crank pinion,
clutch basket, the engaged pair, front sprocket, chain, rear sprocket and
wheel. The animated bench needs WebGL; every number below is the same
either way.
The bench is decorative; every number it
shows is in the readouts and the data table below.
The multiplication
–Primary×–Gear×–Final=–Crank : wheel
What that means
Road speed–
Engine–
Gear–
– ·
–modeled · 585 mm nominal centres ·
–nominal
Tooth counts are not
published for this model — the affected bodies are drawn as plain discs.
Controls
Front–
Rear–
Scene runs at 1/71 speed ·
all ratios exact · gearbox spread along the shaft · one pair shown, a real box
has six, all constantly meshed · tooth profile and case dimensions modeled