ORIGINAL: guille2006
...About tip stall: appears only in tapered wings because the tip chord is smaller so stalls before the root choords....
Not true. A tip stall, meaning one wing stalls significantly before the other, resulting in roll, can occur with any wing planform. A "tip stall" is required to do a spin or a snap roll and there are many constant-chord winged airplanes that can do decent spins and snaps.