Very interesting post/topic. I've been thinking about this issue ever since I started my sinew back recurve. I'm not sure of the difference/advantages between a continuous bend static curve and one that bends sharp then is straight to the nock. I feel like the sharp bent ones with a straight to the nock is more of a static bent lever. The longer the lever the smoother the draw would be for the poundage. Kind'a makes me think about a bent Molley at the lever fades.
I like short, tight statics that match my 27-28" draw. I want the string to completely leave the belly by the time I get to 22-24", or less. Im not sold on long, sweeping statics being beneficial, but Ive never made one that way and probably never will.
I agree with Pearl, but I think as long as the string lifts off of the limb at full draw there is no difference if it lifts 3-4 inches before as long as it lifts. Also, I think what makes the difference is the angle of the nock in relationship to the limb with respect to the length of bow and the intended draw length. The bow is only as long as the string is off the limbs a full draw. If the string doesn't lift from the limb at full draw the rest of the tip dead weight.
After all of this, I will not finish the tips on a recurve until it is tillered to full draw. because it may be too long or too much degree of bend where the string won't lift. I think I will have to rework the tip on the sinew bow I working now I believe it has too much degree of bend. Live, experience and learn I love it.
I hope this makes since and my thoughts are valid.
DBar