Rear Spoiler discovery
Discussion
It is recommended to replace the transom lip when changing the rear spoiler configuration. It is said that if a car has a rear wing type spoiler then it should have the small transom lip but if the spoiler is removed, then a large transom lip should be fitted. I went up to Jon's last week and he showed me a small transom and my car (which was born with a spoiler in 1997) clearly has the large transom. The practical upshot is this:
Cars fitted with the s4S type wrap around wing fitted to the body were born with a large rear transom (1995 to 1997) and are therefore aerodynamically "as recommended by the factory" without the spoiler.
Cars fitted with the boot (trunk) lid mounted rear spoiler (1998 on) presumably had the small transom if a spoiler was fitted and a large one if it was not fitted. This should be the case from 1998 when the V8 became SE or GT and the wing became optional up to 2000 (I think) when it became compulsory again.
Still think the car looks loads better without the wing ! Even the detractors before removal now agree that the car looks lower, cleaner and more tasteful than before. Each to his own, I suppose
Cars fitted with the s4S type wrap around wing fitted to the body were born with a large rear transom (1995 to 1997) and are therefore aerodynamically "as recommended by the factory" without the spoiler.
Cars fitted with the boot (trunk) lid mounted rear spoiler (1998 on) presumably had the small transom if a spoiler was fitted and a large one if it was not fitted. This should be the case from 1998 when the V8 became SE or GT and the wing became optional up to 2000 (I think) when it became compulsory again.
Still think the car looks loads better without the wing ! Even the detractors before removal now agree that the car looks lower, cleaner and more tasteful than before. Each to his own, I suppose
i don't have the exact shape of your car as a 3d file, but i measured and modeled mine in detail. i did several 60-120 windy models on the car, and nothing about it is at all aerodynamic. if they did any wind tunnel testing, the test results did not influence the shape they went with. the best aero shape for a car, according to my software is the same shape as an american football: low drag, no lift. i think i saw one of those at a halftime show driving a whopping 20mph.
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