Home : RC Engines : MR Ninja MR21 B01 5-port Buggy Engine

MR Ninja MR21 B01 5-port Buggy Engine

Born under the technological supervision
of Mario Rossi

The MR Ninja MR21 B01 is a specially-developed 3.5cc Buggy engine which meets all off road drivers' requirements.

The MR Ninja 21 B01 is flexible, easy to use, with amazing reliability. Resistant to very high temperatures, it provides huge torque and incredibly high RPM, at the same time providing a smooth and controllable acceleration from a very low RPM range.

Thanks to the technological and futuristic research centre at GRP, everything has been studied with the most up-to-date and advanced software of mechanical simulation, to know and reproduce the conditions of use and deformation of components and materials at high temperatures. All components have been meticulously studied and the result has confirmed a very high basic quality that will set a new worldwide standard quality in this field. Each single engine is delivered with protection cover for exhaust, intake fuel entrance and carburetor. It will come with a manual of use and maintenance and a spare parts catalogue on CD.

Specifications

Displacement: 3.49 cc
Max RPM: 43.000 rpm
Stroke: 16.79 mm
Bore: 16.27 mm
Ports: 5
Sleeve: ABC
Crankshaft Diameter: 14 mm
Exhaust: Rear
Carburetor Diameter: 7.5 mm var.
Carburetor Material: Aluminium
Adjustment: Single

Details

TCS - Temperature Control System

TCS is a technical concept for the separation of direct contact of carburetor body with the crankshaft, to control the temperature of the carburetor itself. An insulating bush made with a very special mineral material interrupts the heating passage to the carburetor body, guaranteeing a better regulation of the carburetor functioning. In this way, the carburetor body can be made entirely with an aluminium alloy to guarantee maximum regularity at any temperature of use.

MR Ninja MR21 B01

Carburetor

Made from a single piece of an Aluminium alloy, through a press fusion process. The Intake fuel body is entirely made of ergal for greater lightness and stiffness. All O-rings are made with a special material to guarantee the highest elasticity and resistance to fuel. Supplied with a TCS insulating bush.
MR Ninja MR21 B01

Connecting Rod

Higher acceleration and rotational rate. Minimal deformation at high temperatures. All this from an advanced material used to produce the connecting rod allowing the exclusion of any bushings leading to greater lightness.

Crankcase

Very stiff structure created, mainly in the area of cylinder/exhaust and carburetor joint/intake. The manifold joint is fixed with 4 identical springs, which are perfectly fitted between the cooling fins. The special aluminium alloy used for the press fusion process, combined with the patent system for port production are extremely important.
MR Ninja MR21 B01

Crankshaft

Designed with a special profile resulting in the perfect balancing of the piece, without having to balance it up with some weights, which generally creates heterogeneous deformations at temperatures of use.

Rear Cover

Made with ergal and an APS treatment, the rear cover is resistant to abrasion, due to conrod rotation. It also guarantees a reduction of loss of friction and therefore power.

MR Ninja MR21 B01

Piston

Made directly from a “CNC” production, using a special aluminium alloy, which guarantees a very high dimensional stability at high temperatures, a very high wear resistance and it gives easy running and lower friction.

Sleeve

Special internal treatments guarantee an extreme hardness and a notable wear-resistance. All external surfaces are trued to assure the highest dimensional quality.

APS - Abrasion Protection System

An exclusive treatment that has been applied on different components such as the rear cover. These pieces are wear resistant and the revolutionary treatment guarantees a reduction of loss of friction and therefore increased power.

Serial Number

A specific serial number is engraved on the crankcase of each engine, which allows tracing back, (at any time and even after a long time from its production and distribution), to the technical specifications and type of components, including the commercial data for each single piece. Ninja Engines guarantees each engine and any eventual reparation will be carried, only and exclusively, on engines with a recognizable serial number.

MR Ninja MR21 B01