Stupid question?
I am only asking because lift/water resistance is proportional to square of speed and only linear with surface area, i.e. lifting force is:
F = k *v*v*S
where V is speed and S is surface.
General rule of thumb seems to be 135x40 for 75 kg rider 150*45 for 95 kg rider, correct?
Plus 9-10 m kite for 75 kg and 14m for 95 kg for the same conditions.
So kite roughly 40-50% more powerful required plus+ board surface area 1.25 size of smaller board.
So for only 26% increase in weight (95/75=1.26) people recommend 40-50% increase of pull PLUS 25% increase in board surface area? 1.5*1.25=1.875 - i.e. 87% combined kite + board increase...
Does not make sense to me to have 87% increase combined for only 26% increase in weight.
I would say for 26% increase in weight I might want say 13% increase in surface area and 13% increase in kite size?
13% increase in surface can be something like 135*45 cm (compared to 135*40)
13% increase in kite area is going from 10m to 11.3m .
My understanding is this somehow above increase values are actually not enough?
Correct? Why? Where did I go wrong?
Why most people suggest 20-25% increase in board area plus 40% increase in kite surface
????????? LOL