Pistachioted,
Generally speaking...because the drivetrain is always powered from the rear forward, up to the clutch, putting in the clutch doesn't disengage the drive train. It takes it out of a loaded condition, but if you are buzzing down the road and depress the clutch, everything is still turning from back to front. Does this make sense.
Sometimes you get different dynamics because of this 'reverse situation', and what might cause a noise or problem when under power doesn't do so when driven from the other end.
Stuart
