Malossi Pin 15,Rod 105,Stroke 51 mm Cone 20 Engines Reed Valve CrankshaftRef : MAL00776A / 1147930

Description

STRENGTH AND RESISTANCE

MALOSSI CRANKSHAFTS FOR VESPA

The crankshaft of a Vespa is one of the most delicate yet important components of this type of propulsion unit, having to handle the movement of rods and pistons, as well as regulating intake through the crank timings.

The Malossi technical office has dedicated its attention to both of these elements, creating two versions of the crankshaft and developing unique solutions with a high technological value, starting with the choice of materials; top quality as always.

All Malossi crankshafts for Vespa are made from aeronautical quality reinforced steel and are founded in a vacuum. It is a material highly resistant to scratches and guaranteed by the certifications required in Malossi's strict handbook. The "viper head" piston rod's shape is designed to limit weight to a minimum whilst guaranteeing the required rigidity.

Not even the smallest detail has been overlooked. Indeed, Malossi technicians have even worked on the thread on the transmission side axis of the crankshaft, succeeding in significantly increasing resistance by producing smoother stepping. Even the position of the key has been reviewed both in terms of size and shape, so as to no longer damage the thread and contribute to resistance in what is an avant-garde solution. Crankshafts are supplied with special nuts, much stronger, to take advantage of the increased resistance offered by the tighter thread.

 

DIFFERENT VERSIONS

Crankshafts are available with different piston rod lengths for "small frame" Vespas, on to which the full crankshaft is fitted.

The shaft for motors with a rotating valve inlet has a standard length shaft and piston rod.

 

FULL CRANKSHAFT

The Malossi full crankshaft, designed only for Vespa motors modified for use with a reed valve inlet systems instead of the original rotating valve, is the next level for Vespa enthusiasts.

As with the rotating valve version, this version is also guaranteed to offer optimal balance, having tungsten inserts. Furthermore the half crank on the transmission end has a specially-designed chamfer to ease fresh gas intake under the sump.

The circular mass structure is the zone which benefits the most from this new shaft and sump configuration, receiving the maximum possible pressure level.

Products reserved exclusively for racing in specifically designed locations according to the provisions of the competent sporting authorities. We disclaim all liability for improper use

h3>Description

STRENGTH AND DURABILITY

MALOSSI CRANKSHAFTS FOR VESPA

 

The Vespa crankshaft is one of the most delicate and fundamental components of this type of power unit, as it has to control both the movements of the connecting rod and the piston, as well as regulate the intake using the timing mechanism.

The Malossi technical department has paid particular attention to these two aspects, creating two versions of crankshafts and developing new solutions of high technical value, starting with the selection of the materials, which, as always, are of the highest quality.

All Malossi crankshafts for Vespa are made of hardened, vacuum-melted steel of aeronautical quality, a material that is highly resistant to scratches and is guaranteed by the certifications required by strict Malossi specifications The connecting rod with a ‘viper head’ has a sophisticated design to absorb maximum weight and guarantee the required strength.

Not even the smallest detail has been overlooked. Malossi engineers have in fact been able to significantly increase resistance by using a finer thread on the axle on the drive side of the crankshafts The position of the spanner has also been revised in terms of both size and shape to no longer damage the thread and to contribute to the resistance with a modern solution. The crankshafts are fitted with special nuts that are much more resistant in order to benefit from the highest resistance that the densest thread can offer.

 

DIFFERENT VERSIONS

Crankshafts are available with different lengths of connecting rod for Vespas with a ‘small frame’, on which the shaft is installed with a full collar.

The shaft for engines with a rotary valve intake has standard dimensions for the length and length of the connecting rod.

 

SHAFT WITH FULL COLLAR

The Malossi shaft with full collar is designed solely for Vespa engines that have been modified to use an intake system with a reed valve instead of the original rotary valve. These engines represent the new limit for Vespa enthusiasts.

Just like for the version with a rotary valve, the optimum balance is ensured by tungsten inserts. In addition, the back of the drive side has specially developed bevels to facilitate the intake of fresh gases into the lower housing.

The circular ground structure is the area that benefits most from this new shaft and housing configuration, as it receives the highest possible amount of pressure at all times.

Products intended solely for competition at the locations designated for this purpose and in accordance with the provisions of the relevant sports authorities. We do not accept any liability for improper use.

Compatible makes and models

  PIAGGIO APE 50 2T <-1989 Only with CYLINDER KITS art. 3115829 - 3117681   PIAGGIO APE FL2 50 2-stroke 1990->1995 Only with CYLINDER KITS art. 3115829 - 3117681   PIAGGIO APE FL3 50 2-stroke 1996->1999 Only with CYLINDER KITS art. 3115829 - 3117681   PIAGGIO APE FL 50 2-stroke 1989->1990 Only with CYLINDER KITS art. 3115829 - 3117681   VESPA ETS 125 2T ATTENTION: drill the crankshaft seat on the ignition side of the ENGINE CASE Ø 87.   VESPA ET3 Primavera 125 2T ATTENTION: to install the crankshaft, the 6619313 kit is required (sold separately). Drill the crankshaft seat on the ignition side of the ENGINE HOUSING Ø 87.
VESPA PK XL 125 2T ATTENTION: drill the crankshaft seat on the ignition side of the ENGINE CASE Ø 87.
VESPA PK 125 2T ATTENTION: drill the crankshaft seat on the ignition side of the ENGINE CASE Ø 87.   VESPA PK FL 125 2T ATTENTION: drill the crankshaft seat on the ignition side of the ENGINE CASE Ø 87.   VESPA Primavera 125 2T ATTENTION: to install the crankshaft, you need the 6619313 kit (sold separately). Drill the crankshaft seat on the ignition side of the crankcase Ø 87.