How an AMVKart rim is born

Research & Development

Genesis of small masterpieces

Design, development and production: the first steps of AMV circles.

The creation of a single circle follows a complex process that begins with CAD design in the engineering office, followed by its 3D printing, which allows a more concrete view of it and makes it possible to identify its most obvious criticalities.
Next comes the CAD design of the mold, its CAM processing, and the CNC machining of it, all again in-house. Once the mold is obtained, some “pre-series” castings can be made, which are essential to allow for first possible modifications of the mold. Later castings, on the other hand, are already useful for making the actual rims, so they are machined on CNC machines. All these steps lead to a circle that is tested on the track. Having passed the technical checks, actual production begins. Once they go into production, every single rim made undergoes the 4-bar leak test. Next, the rim undergoes the OXiTECH surface treatment. This is followed by the application of valves, adhesives, and to packing in boxes, ready to be shipped to tracks around the world.

CNC Machining

AMV’s machining department has always been the subject of continuous technological investment. It is equipped with a number of robotic lathes and machining centers with pallet changers, which are essential for performing machining operations accurate to one-hundredth of a millimeter. The machine tools within the company play a key role as they enable us to make not only the rims, but also all the other crucial components such as brake systems, wheel hubs, wheel carriers and so on. This allows us to guarantee the highest precision and quality in our products, ensuring optimal performance and reliability under all conditions.

Heat exchange

The key and strength of AMV circles is low-pressure casting. Already used in
passed specifically for the magnesium rims of F1 and rally cars, this process allows the porosity of the metal to be reduced, making it no longer necessary to paint the surface of the rims to eliminate any air leaks.

The peculiarity lies in the fact that paint, having a much lower heat transfer coefficient than magnesium, acts as an insulator. In contrast, unpainted magnesium can dissipate heat more effectively, preventing tires from overheating and providing more stable internal pressure. An aspect, this one, that is fundamental to having the tires always at the ideal pressure throughout the race.

IN-HOUSE Production

The added value of AMV is undoubtedly related to production. The company follows all stages in-house, ranging from design to sales.

All production is carried out in-house at the company structured on 3 different locations, each with specific functions. One of them is dedicated to the foundry, where low-pressure casting, AMV’s strong point, is carried out. This particular technique represents, the best solution for the production of kart components, since it allows to have a complete machining of the rim, with very high quality, reducing to zero the possibility of having problems due to the presence of air in the structure of the rims themselves.