Fabian
Well-Known Member
Simple answer Jaguar - Improved low rpm torque from the 69cc engine.
The 69cc engine allows you to use less rpm for the same road speed, which has many benefits: reduced vibration, reduced noise and reduced wear on the engine which just happens to increase engine life.
It doesn't matter what kind of methods are used to increase the torque of the 50cc engine because the same methods applied to a standard 69cc engine will enable greater torque at lower rpm.
The 69cc engine allows you to use less rpm for the same road speed, which has many benefits: reduced vibration, reduced noise and reduced wear on the engine which just happens to increase engine life.
It doesn't matter what kind of methods are used to increase the torque of the 50cc engine because the same methods applied to a standard 69cc engine will enable greater torque at lower rpm.