Malossi Vr-One crankcase with reed valve 5718382
Code: 5718382
The VR-One is for power purists, for those who want to push their Vespa to the limit, but that's not all. It has the same mounting characteristics in the body of the V-One and the same cylinder housing possibilities thanks to the revised fluid dynamics of the crank chamber, the drilling of the studs and the same accessories supplied with the V-One (except for the mixer pin ).
This crankcase has been designed to withstand higher powers and for this reason it is supplied with ball bearings on flywheel side Ø25xØ52x15 and transmission side Ø25xØ62x12, which eliminate needle roller bearings and allow greater capacity to withstand radial loads and further resistance to loads. axial, not contemplated with the original roller bearings. Dedicated oil seals are also provided.
The greater resistance to the stresses due to the crank mechanism makes the crankcase perfect to be mounted with our single-ring MHR cylinders, art. 3117163 (stroke 57), but especially with the kit 3117361 (stroke 60). The natural combination for this configuration is with the Malossi full-shoulder 60 stroke crankshaft, supplied with the right balance and perfect for the reed valve power supply provided for the new VR-One.
