repair and upgrade kit for the primary reduction of all Vespa Wideframe engines, e.g. Vespa VM, VN, VL, VB, VNA, VNB, VBA.
The springs contained in the large primary wheel serve as shock absorbers. They protect the gearbox from high load peaks. If they are too soft in relation to the engine torque, they are fully compressed and pass peak pressures unfiltered to the transmission.
The reinforced springs included in the set counter the higher torque of modern engine concepts with a correspondingly higher spring rate. As a result, the standard springs no longer go on block and thus prevent load change peaks from being transmitted to the clutch or motor housing. This means that the lugs of the clutch linings last significantly longer, the risk of the original springs breaking is eliminated and the transmission is protected.
Fits the original primary drive
Ideal supplement to our SC Cosa clutches
Reinforces the primary drive
Protects the entire drive train, especially the clutch
Fitting for all primary transmission ratios of the mentioned Wideframe motors
Springs made in Germany
With a spring rate of 48N/mm the springs are sufficient even for very high torque motors and offer the perfect symbiosis of material protection and sufficient spring hardness.
FAZIT: Absolutely recommendable measure for all motors that are no longer in line with the series.
(US)
