Objects take time to start moving, and while they are being pushed about fast, they
don’t behave in quite the same way as when stationary. Think about what happens if
you push a rubber ball slowly. It seems to move immediately at the speed of your
hand. But if it is struck hard, say with a baseball bat, the ball flattens a bit
against the bat, so although the whole thing is very quick, for a very short while
after contact, the bat is moving faster than the ball.
Something similar happens when a bow fitted with flexible stabilisers or TFC’s is
shot. It takes time for the stabiliser weight to be affected, as the flexible stabiliser
takes up the initial bow movement. So the full effect of the stabiliser weight is
immediately by the bow which, for a very short time, behaves almost as if unstabilised.
That is one reason for the development of the TFC, or ‘torque flight compensator’,
and also part of the reasoning behind the recent move back to shorter, more rigid
stabiliser rods - to make sure the weight affects the shot.
Exercise: Set up your bow without stabilisers. Without letting the bow rotate, move
the bow smoothly back and forth (along the arrow line rather than sideways). Then
fit all your stabilisers and repeat the experiment. Was the bow as easy to move?