did i say sumting wrong?
hm ..... about the bigger gear smaller gear issue ....
heres imho theory
like schumacher said force = mass x acceleration
so if its spur and pinion is bigger it will ahve more rotating mass making it WANT to go foward or continue moving foward (momentum?)
think of this a heavier flywheel will not slow you down on slopes while a lighter one will.....
and vice versa ... so the gear we have on our car can be said as flywheel (maybe)
this is because the heavier flywheel will have more momentum to keep the torque up ..... therefore the engine is less stressed but acceleration is compromised
think of a toy car which uses inertia or momentum to keep it moving ... it has a unbalanced disk which works as a motor to keep launching the car foward .....
or think of this
take a lorry's wheel and rotate it with hands on a wheel balancer and compare it with a sedans wheel
the lorry's wheel will be harder to rotate but will rotate LONGER !!- heavier flywheel / bigger spur and pinion
and vice versa for sedan wheels