Quote:
Originally Posted by Cd
The angle of the back end is really steep - about the same as a new Beetle.
How did he get such a good Cd with all that flow separation ?
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The Honda 600 is a very narrow car (just over 3 feet wide IIRC?) and to my eye it looks like the back window is a compound curved polycarbonate. It does appear to be too steep from a side view but there is probably a lot of taper from the sides. The New Beetle C pillar has sharp edges and minimal plan taper. I believe this creates two big trailing vortexes and increased drag (I have seen a fastback diagram from the Hucho book somewhere that shows this). The smooth compound curves on the P-100 would help fill the wake and reduce drag. The back end of Honda reminds me of the front of the Bullet Train I rode in 1979. It also looks like there is a 4º upslope on the rear diffuser. I wish we had more photos and info on this car. Thanks Phil, good find!