the curvature added to the tangential lines of contact 42 and 44 greatly accentuate these advantages one potential application of this invention is a 25 000 hp 6 pole synchronous motor which upon examination showed the existence of cracks in the 34 bridge 34 region of the amortisseur ring although a retrofit to incorporate the modification of the subject invention has not been performed on this machine to date extensive calculations have been made to determine the advantage which would be gained by such application the geometry of the machine in question is as follows the 34 free 34 amortisseur bars have a uniform diameter of 2 125 inches and are loosely fitted at either end through holes in the end rings having a diameter of 2 155 inches the amortisseur ring has dimensions of 59 75 inches outside diameter and is an annular member with dimensions of 4 inches in the radial direction and 1 5 inches in the axial dimensions the bar is made of brass the holes for retaining the free amortisseur bar ends are offset from the centerline of the ring truss so that the dimension between the radially outer edge of the holes is spaced from the outside edge of the amortisseur ring by 0 125 inch the assumed application of the present invention to this machine would be to machine a 34 flat 34 at the respective ends of.