We report dynamic measurements of the shear modulus \ensuremath{\mu} of a two-dimensional bond percolation lattice model made by exciting torsional oscillations of cylindrical screens of (3--5)\ifmmode\times\else\texttimes\fi{}${10}^{3}$ bonds. Critical variables such as the correlation length and the susceptibility, calculated from cluster statistics, were used to determine a scaling regime for \ensuremath{\mu}, bounded by a mean-field region and by finite size corrections. Our results confirm the prediction of a new universality class for elasticity percolation with a shear modulus critical exponent \ensuremath{\tau}=3.6\ifmmode\pm\else\textpm\fi{}0.2.