fitting RB7s exhaust system and suspension details
After my exams are over, I’ve now again time to build a little bit on my RB7.
At monday I’ve already fitted the dampers and lower wishbones at the rear. It was not that easy to pack the whole damper arragement inside the very tight rear bodywork. Today, I finished the exhaust system (okay, the lambda sensor is still missing). Don’t ask me why RBR covered the whole exhaust system with that carbon fibre shield. Look at that picure © sutton-images.com. Carbon fibre is common for it’s less resistance regarding high temperatures. The most epoxide resins used in motorsport resist temperatures up to 130°C (403K), above that, they’re getting soft and the whole composite gets flexible (special resins up to 180°C). Maybe they covered the housing inside with a heat protection foil for losing as less as possible caloric heat and therefore energy. So they could improve the efficiency of the exhaust blown diffuser. As I said, only a theory. Another theory, but I can harldy believe that’s possible, is, that they tried to improve aerodynamical efficiency inside the car. RB began with that in 2010 I think. They covered the whole engine inside with heat shields for a better airflow inside the car to improve the cooling capacity. Ususal the minimum cooling entering cross-section is at least 25% of the radiator area, the exit about 50%. If you improve airflow inside, you could also improve that disturbing openings.