The unwanted effect of airflow being diverted by the rear tyre under the floor has been understood for some time. The trend towards needing a lower Lift\Drag ratio and higher rear ride height has brought this issue into greater focus in the past seven years. Last season saw the slots used to offset this effect, known as tyre squirt, grow increasingly in significance and number.
Since 2010 this blog has covered a lot about exhaust blown Diffuser (EBD) technology, especially in the latter years when it was allowed in F1, with the use of the Coanda effect. Now three years on, some of the manufacturing processes that allowed such rapid development of EBD’s can be revealed, especially with the use of 3D printed titanium parts. Here we have a printed titanium coanda duct from the Marussia Team.
When looking at the installation of any Hybrid or Electric racing car, the bright orange cabling is a trademark feature, taking the high currents between the battery, inverter and eMotor. With light weight, reliability and rapid disassembly all factors in the cabling installation, the cable choice and the connector technology are critical and often unappreciated by the fans. I’ve recently purchased some Ex-F1 DC connectors\cables which give us some appreciation of the tech involved here. These are both Red Bull RB8 (2012) parts, taken from the DC (battery to inverter) bus. Rather than simply being big fat copper cables with two pin connectors, they are remarkably complex in their design.
During the F1 KERS era (2009-2013), Red Bull Racing adopted a unique battery set up. Rather than in a recess under the monocoque\fuel tank, the battery is split up into three separate units around the gearbox. I’ve explained the KERS installation in previous posts (LINK), but I’ve recently acquired a 3D printed mockup of one of the side mounted battery cases. This gives us some unique insight into the battery case’s dimensions and layout.
Toro Rosso have released a youtube video of a complete factory tour. Both informative and in depth, the video shows us some detail of the car we do not usually get to see.
With the FOM world TV feed now using on-board Infrared (IR) cameras, it’s been interesting to see how the tyres temperature changes around the lap. But in Korea we were treated to a rear facing IR camera on Mark Webber’s car that showed the front of the T-Tray splitter warming up and staying hot around the lap. This image helps to highlight both the cars set up and the construction of the car around the front of the T-Tray. Many fans jumped to the conclusion it’s the plank itself running hot under the car, but it is in fact the titanium skid blocks conducting heat through to the floor mount.
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