The Allard J2X Story

Image copyright and courtesy Tom Hiett
Text copyright Michael J. Fuller

The Allard's tunnels are quite large and spacious.  Note the location of the exhausts blowing into diffuser. The primary goal in their placement was packaging and not aerodynamic as the negative aero effects (throttle dependent downforce) out weighed their positives (higher over all downforce).

©Copyright 2004, Michael J. Fuller