Along with the Cosworth engine, the FIA have tendered for specification gearbox to be made cost effectively available to all teams. The British firm Xtrac won the tender and hence have returned to F1 as a complete transmission provider after an absence of over ten years. While the internals of the seamless shift gearbox are still secret (aside from the presence of a twin selector shift mechanism) the external details have been published through these pictures. Project 1044, as its known to Xtrac is was developed with the assistance Dallara, who gave input onto the external features for installation, aerodynamics and suspension. As the external case is used by both Hispania and Lotus we now have a clear idea of their rear suspension installation. Largely conventional in its layout, all of the features are common to those seen on other teams gearboxes. Despite the single specification of outer case, the gearboxes can be machined slightly differently to accommadate the chassis designers exact suspension geometry.
The aluminium case features cast mounting points for the; wishbones, Anti Roll Bar, torsion bars and dampers. These are all highlighted in the attached image, although the suspension rocker linkage is absent, but this is a team designed part, so it will vary slightly between the two teams. We could expect that the teams have a heave damper mounted between the rockers and passing across the top of the case, possibly in tandem with an inerter if the team have reached the stage where they have developed a set up to incorporate the device.
In this bare guise Xtrac quote the complete units weight as “approximately 40kg”.