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depending on its own geometrical and technological features, each spring has a well defined value of load elongation ratio (K). therefore, elongation values being equal, a spring that requires a higher strength, will have a higher load-elongation ratio (k). inside a clutch unit , springs specifically aim at fixing the coupling point of clutch masses on the clutch unit drum cap, thus opposing the clutch mass expanision movement produced by the centrifugal force. so, the higher the load elongation ratio (K) of the clutch spring, the higher the rotation speed of the motor at which the clutch unit will transfer power to the wheel (coupling point) and make you go fast n stuff.
ciao ciao ciao!
for non variating vespa mopeds like ciao, boxer and kinetics
comes with three different spring sets of different tensions for clutch tuning.
length = 26.4mm
OD = 8.1mm
29 7306
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