Composite materials are used to construct the Front wheel-rims fitted to the ECV.Carbon-fabric sheets impregnated with epoxy resin;
A honeycomb and aluminum centre flange with an additional adhesive protective film to withstand the high temperatures generated by the brakes;
Special resin formulas at the wheel rim edge to reinforce this critical area.
The wheels were the result of applied research by SPEEDLINE in collaboration with the racing department of Fiat- Abarth, Enichem and IDC.
The objective of this research was to propose and to evaluate the construction of a wheel-rim made from carbon fiber for rally-use on "gravel surfaces", this being the most extreme use condition, with the aim of achieving a significant weight saving compared to the typical magnesium-alloy rims, which were normally used for rally-events.
The composite rims were made from :
Due to these innovative materials and processing methods, weight savings of 40% and a total weight of 6 kg per wheel were achieved for a gravel rim measuring 8x16 ", capable of withstanding the stresses imposed by a rally-car with a power of 600 hp.