Quote:
Originally Posted by Taylor95
It would be pretty difficult to test different angles, and probably not something I am going to do because this would require a lot of quality and work to do accurately. I am sure that there is a difference between a 10 degree slope and a 15 degree slope, but not enough to make testing worth it to me.
I will likely slope the spoiler by a conservative 10 degrees, and quantify the change through testing.
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I'd never spend money on a spoiler without testing first. Just use plastic sheet and tape to make trial spoilers. Even without throttle stop testing, I could detect (through fuel mileage) changes in drag with different rear spoiler angles on the Roomster shown in the other thread.
(And testing is even more important if it's a lot of work to modify the existing spoiler.)