Quote:
Originally Posted by California98Civic
Ummm... this really needs expert explanation. If that Camaro can accomplish nearly the same Cd as the EV-1 looking like that, and a better number than a 2001 Insight, then... what the hell!
|
Here are some comparisons:
*GM has downgraded the EV-1 to Cd 0.21,from 0.197.
*The GM Chevy Citation IV might be Cd 0.191 vs 0.18.
*The GM AERO-X might be Cd 0.266 vs 0.25
*The GM Sunraycer is now Cd 0.143 vs 0.089-0.125.
*The Cd 0.19 Ultralite might also now be 0.21.
*The GM Precept may have gone from Cd 0.163,to 0.173
*The GM LSR EV-1,reported by Goro Tamai at Cd 0.14 may be Cd 0.149
*I didn't have the 1980 Z-28 but the Firebird is similar.
*Honda's 1st-gen Insight at Cd 0.25 is reported at Cd 0.30 at A2.
*The Prius III while Cd 0.25 at Toyota,is 0.26 at A2,0.285 at Darko,and 0.32 at GM,Ford,and Chrysler.
*GM and A2 both show Cd 0.28 for the VOLT.
*While GM and A2 are in agreement on VOLT,there is a discrepancy with Prius III.(23%1)
*Wolf Heinrich Hucho says adapted-wall wind tunnels (A2/Darko)can have blockage ratios up to 30% without problems.
--------------------------------------------------------------------------
*The HRM Camaro is severely raked,which would affect all angle-of-attack-related flow attachment phenomena for both the forebody,but also the roofline,forcing attachment where it might otherwise separate.
*Lowering would affect it's effective fineness ratio to the good.
*It would also affect frontal area,making the lower air dam less of an aggravation.
*We now know from the "Spirit of Ecomodder.com" what the mirror delete can mean,something EV-1 and Insight would be stuck with.
*And the 100% grille block approaches the EV-1 and exceeds Insight.
*The Camaro's rear Bonneville spoiler also extends the car,bettering the effective fineness ratio.
*The 'zero' clearance air dam is at least 1% lower drag than even with the belly.
*The MOONs were good up to -0.004.
*All the features on the Precept only cost 0.007.
------------------------------------------------------------------------
*Cd 0.201 might only be applicable to the A2 tunnel.But since all the measurements were taken there the number have merit.(And only in this context).
*The bob-tailed Mercedes-Benz C-111 III with open cooling system see's Cd 0.237.With 100% grille-block she might be 0.201.Who knows?