Lambretta Technical Section
Chimera Twin Cylinder Conversion Kit for Lambretta: The Freedom to Create Your Own Engine
Why Choose the Chimera Twin Cylinder Conversion Kit for Lambretta?
Chimera was created to offer the possibility of having a completely customizable twin-cylinder, maintaining the original crankcase and components of the Lambretta. The kit allows you to configure the engine according to your needs and performance, ensuring versatility and a significant improvement in performance, without sacrificing the history of the vehicle.
What you will find in the Chimera Kit:
- Exclusive components designed for the twin-cylinder
- Parts created on custom drawings and molds
- Materials tested for optimal performance
- Total freedom in customization
The Benefits of Having a Chimera Twin on Your Lambretta
More Power and Performance
Il principale vantaggio del Kit Conversione Bicilindrico Chimera è, naturalmente, l’aumento delle prestazioni. Un motore bicilindrico fornisce una maggiore potenza rispetto ai tradizionali motori monocilindrici, con un’accelerazione più rapida e una migliore risposta al gas.
Personalization and Uniqueness
Every Lambretta is unique, and with the Chimera Kit you can give it a truly personal touch. The twin-cylinder engine configuration will allow you to obtain a vehicle that not only offers superior performance, but will also be a true collector’s item.
Green Light to Mechanics: Get Your Hands on It and Create!
With the Chimera Kit, you don’t just buy parts, but a complete experience. We offer you the possibility to customize every aspect of the engine, leaving room for your creativity and your spirit of innovation. Whether you are an expert tinkerer or an enthusiast who wants to make the leap in quality, this kit is the perfect opportunity to test yourself and take your Lambretta to the next level.
In-depth Analysis of Some Elements of the Twin Cylinder Conversion Kit
The cast aluminum block is subjected to X-ray tomography to verify the quality of the casting and prevent the formation of weak areas or blowholes. Each piece receives a stabilizing heat treatment to ensure stability at high operating temperatures. The block is then machined on 5-axis CNC machines, following the 3D design, with an accuracy of 0.02 mm.
The crankshafts are CNC machined, ground and electronically controlled to ensure perfect balance. The connecting rods, ground in parallel, offer high efficiency, with a copper-plated model of 107 mm and 58 mm stroke. The couplings are made with high hardness screws and anti-rotation Nord-lock components. The double shaft, designed to support extreme displacements, uses calibrated anti-rotation pins, ensuring optimal functionality and balancing without misalignments.
The Ducati Energia electronic ignition, with two 180° pick-ups and variable timing, ensures symmetrical behavior for both cylinders. The 12 poles offer driving stability and solid current delivery. The ignition unit includes 2 CDIs, 1 regulator and custom-made brackets for Lambretta. The flywheel, machined from solid and balanced, weighs 1.6 kg, ensuring smooth progression even at low revs. The advance scales on the flywheel facilitate installation and, with the stroboscopic gun, allow precise adjustment of the twin-cylinder phase.
The Chimera heads, machined from solid and milled on request, offer 35% more radiating surface than the original ones, ensuring excellent cooling and performance. The sealing grooves on the base allow perfect expansion of the gasket, ensuring maximum pressure resistance. Heat treated, they maintain stability and planarity even at high temperatures.
The cooling boot, developed through flowmetry studies and advanced simulations, guarantees uniform distribution of fresh air on both cylinders. Combining flow data, 3D tests and bench tests, the optimal cooling system for Chimera has been created. Made of fiberglass reinforced with Kevlar at the fixing points, it offers strength and resistance to stress.
The shock absorber mount and fixing screws, designed by 3D modeling, are created to fix the rear shock absorber in the original position. This mount is compatible with all types of rear shock absorbers.
The wheel spacer keeps the cylinder-frame alignment symmetrical and the engine centered. Made of high-strength aluminum, it attaches to the rear drum. The CNC design allows for a striking tooth for perfect centering of the wheel. It is compatible with split and CNC rims, with the latter recommended in case of high power.
