CP
11-03-04, 08:36 PM
A while ago i was asked by a mate to provide a number of old wing mirrors for him to use to test for their aerodynamic qualities in a wind tunnel.
These included a bedford van, a nova, a landy and a small retro fit mirror.
The nova came out a lot worse than the others with a drag coefficient of 1.30 compared to the others which ranged from 0.50 - 0.70 at 100mph
Its not so much the size as the shape. The nova mirror suffered from having relatively sharp angular leading edges plus the top angled slope was acting as a mini spoiler creating down force.
The bedford van was the best. Although it appeared to be overall bigger than the rest the actual area that the air passed over wasnt. The rounded design allowed the air to release easier and there was no down force being exerted
These included a bedford van, a nova, a landy and a small retro fit mirror.
The nova came out a lot worse than the others with a drag coefficient of 1.30 compared to the others which ranged from 0.50 - 0.70 at 100mph
Its not so much the size as the shape. The nova mirror suffered from having relatively sharp angular leading edges plus the top angled slope was acting as a mini spoiler creating down force.
The bedford van was the best. Although it appeared to be overall bigger than the rest the actual area that the air passed over wasnt. The rounded design allowed the air to release easier and there was no down force being exerted