When you are just starting out in foiling, or when you want to progress, it can be difficult to know which foil to choose. Low Aspect, Mid Aspect, High Aspect: what are the differences and which foil to choose according to your level or practice? We explain it all to you.
The Foil has revolutionised board sports. Thanks to this, it is possible to fly over the swell, to move from one wave to another, partially or totally out of the water. It is accessible for all sizes, all levels, all conditions, with different supports: Wing board, Kite board, surf board, Stand Up Paddle board… Here are all the criteria to take into account to decide between a Low Aspect or High Aspect wing.
WHAT TO CHOOSE BETWEEN LOW ASPECT AND HIGH ASPECT FOIL?
First of all, you should know that the choice of your fin type will depend on your practice and your objectives, but you will have to take into account other factors which influence the speed of the foil: the weight of the rider, the board but also the conditions, the power of the swell, etc…
It is important to first understand how a foil works. We have produced an article entirely dedicated to this subject (available in our News&Tutos section), but we will remind you of the essential information.
Like an underwater plane, the Foil moves underwater thanks to its speed and hydrodynamic lift force (upward lift) which lifts the rider onto its support. The Foil consists of a mast, a fuselage, a front wing and a back wing (the stabiliser). The wings are more or less parallel to the board, which allows you to act on your foil by simply pressing your feet. The front fin has a domed upper part and a flatter lower part. This difference in shape and profile thickness created lift. The chord is the width of the wing (from the centre of the leading edge to the centre of the trailing edge) and the span is the length (the right/left end) of the wing, similar to the principle used in aviation.