BGM1550BS20 Spacer cylinder base -BGM ORIGINAL lower lamp- Vespa Wideframe 1953-1959, VM, VN, ACMA, VB1T, VGL1T, VL1T - 2.0mm

If a crankshaft with a longer stroke is used, this additional stroke has to be compensated for for two reasons. On the one hand due to the mechanical conditions to prevent the piston from hitting or the engine runs too highly compressed, on the other hand to keep the control angle of the cylinder, which determines the performance, within a reasonable range. If the stroke is extended, [...]

If a crankshaft with a longer stroke is used, this additional stroke has to be compensated for for two reasons. On the one hand due to the mechanical conditions to prevent the piston from hitting or the engine runs too highly compressed, on the other hand to keep the control angle of the cylinder, which determines the performance, within a reasonable range. If the stroke is extended, [...]