Ok need some help here with downforce: So far what i understand is that due to the different areas which air have to cover, when it goes over a surface with a larger area at the same time where the otherside has a smaller area the top will have a greater velocity and due to Bernoullis Principle it will have a decrease in pressure. Vice-versa for the bottom side. What i don't understand is how the force is applied? From Wikipedia.org i found this image here: http://upload.wikimedia.org/math/6/5/b/65b94fadeb8c96552b6242d37ed84efb.png Which is the equation for determining Lift. Would downforce just be negative lift? Another two things which i dont understand in that equation is the "frontier of the domain? and the last three terms. Is there a simple way of explaining downforce using Bernoulli's Principle and say the equation for Pressure; P=F/A ? There is also the variable of "angle of attack" which i understand to be the angle at which the air "hits" the object. Thanks.