  This paper is focalized on the limit application of judo throws, by tactics
at first contact time, with some astonishing information at a first seeing, but
biomechanically grounded, not often applied or because against the sound common
sense or out the old oral judo tradition. To do so we provide an appraisal of
the grips concept and his consequences in the Olympic sport judo from a
biomechanics perspective, we will try to deeper both the concept and the
function of grips and define the potential application of some throws without
grips. Broadening this situation we try to underline some specific throwing
situation in which grips are or not at all applied or applied in non
conventional way. We describe at first the problem from the theoretical point
of view. And as second point we try to find practical application, original or
already developed in high level competitions. The provocative words Judo
without grips or throw without grips are connected to the limit application of
some biomechanical tricks, grounded on two well known physical principles: the
time advance in the attack, in Japanese Sen no Sen (already applied in real
competitions), and the utilization of the own inertia connected to high attack
speed to apply in totally original way one of the two biomechanical tools
utilized to throw the human body.
