Costa Tsimiklis wrote on Monday, July 12, 2010 - 02:34 pm:Good effort on the diffuser, but its not going to be effective with the sharp saw tooth design.
I would recommend that you chop the end triangle off and make it square with a radiused edge of around 5-10mm.
As it stands, the joining of the air flow wake is poor as there is no sharp edge or transition due to the protruding triangles.
The CD of the soarer improves by around 0.02 if you add the ducktail factory spoiler to the boot. It actually works to bring the CD of the soarer to around 0.29 compared to 0.31 without the ducktail spoiler. With your modified diffuser I would suggest the improvement would be around 0.01-0.02 and with a flat under body and a few mods 0.25 might be possible. The soarer is really an aerodynamic masterpiece.
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