MALOSSI V-One crankcase, valve intake - Vespa PX 125-150 Elestart

Description

The technical and technological advancement of Malossi the greatest strength of our products, the reason why we are convinced that we have made one of the best casings that have ever been produced.

Strengths

In every square millimeter of the crankcase an innovative thrust is perceptible that catches the eye of even the most inexperienced of preparers. The gravity shell casting, which differentiates these carters from the original models obtained, instead, with a die-casting process, combined with the use of modern shell molded cores, allows to obtain better internal shapes and made with the utmost precision.
The gravity casting allowed us to strategically increase the sections in the most stressed areas and to subject the crankcase to a reclamation treatment after casting, thus obtaining a very high mechanical resistance. These products are made with a light aluminum alloy Al Si 7 Mg (EN AB and AC 42000) of the highest quality containing in the right quantities: Silicon, to increase mechanical resistance, Manganese, for better resilience and corrosion resistance, Copper and Magnesium, to improve the qualities of workability.
The machining of the casings is carried out entirely in our workshop with the CAD / CAM process and carried out inside high precision CNC machining centers. All the supporting and closing surfaces have been machined with diamond tools capable of guaranteeing extremely low surface roughness values ​​and practically perfect couplings.

Benefits

Both crankcases share a series of basic characteristics such as, for example, the front arm reinforced with tension relief ribs and sections with a calculated profile to allow the right flow and channeling of stresses and ensure better resistance.
In both models there are pins for the brake shoes, which are installed directly in the company with presses capable of applying the forces necessary to make the couplings required by our designers.
In addition to the brake blocks, the crankcases are supplied with the M7 studs necessary for mounting the gear selector.
Lastly, no version excludes the original electric starter, whose actuator can be mounted in the appropriate surface obtained in the volute.
Fluid dynamics has finally been implemented! Having equipped our series models with suitably profiled and sized bags for transferring to perfectly match our 63 cylinders, without excluding the possibility of mounting other thermal units and indeed offering an increase in performance even with the latter. , exempts the preparers from the obligation to work the crankcases to mount more performing cylinders. M7 studs for mounting cylinders are also included in the package!
Thanks to the listed interventions, the achievement of greater powers is no longer a problem. Even the usual problem of oil leaking from the crankcase has been solved thanks to:

Increase in the walls of the pump casing, which further contributes also to the mechanical resistance of the casing
Use of M8 captive screws to replace the original M7
Very high precision machining of the closing surfaces. We eliminated the crankcase gasket, which deteriorated and became the main cause of oil leaks. Now the crankcases are perfectly coupled and closed with gasket paste, resistant even to the highest operating temperatures!