St50/70

Hi any difference between the ST50 and ST70? Size same?

Hi mucus-boy, my understanding of the st50 and st70 is that the st50 was the first version to come out in around 1969 and then the bigger st70 was introduced with the bigger engine inplace, they are more or less the same size and weight with the original st50 having a low slung exhaust and I believe in the 1980s the st50 was reintroduce along side the st70

Thank u!