hello all,

this looks promised but i cant help thinking...

in low rpm the motor is at 5000 through that gearbox 5:1 it comes to 1000rpm the drive sprocket the practice small for the gb is 8tooth the crank spocket is (lets be generous) 52t gives us a further reduction of (8t/52t the sprockets) .1538 thus the crank will be rotating at 153rpm (0.1538461538461 x 1000)?