S7 SPECIFICATIONS Displacement: 3.49cc (0.21 cu.in) Bore: 16.27mm (0.64in.) Stroke: 16.8mm (0.66 in.) Practical R.P.M. : 4000~40000 r.p.m Power output: 2.6 ps/ 34000 r.p.m. Weight : 348g (12.50 oz)
S3 SPECIFICATIONS Displacement: 3.49cc (0.21 cu.in) Bore: 16.27mm (0.64in.) Stroke: 16.8mm (0.66 in.) Practical R.P.M. : 4000~40000 r.p.m Power output: 2.55ps/ 33000 r.p.m. Weight : 348g (12.50 oz)