In the IRC model, gravitons are low-energy tachyons trapped between and within sub-atomic particles by the Lorentz contraction. They perceive the tardyons trapping them as having length LV≈L0*V/c, which is > the graviton’s wavelength λ. Their frequency ν is minimal when V→∞, so νV=v∞*(1+c2/2V2+c4/6V4+…). Within a quark or lepton, the proto-matter’s orbit is always tangent to the orbit of the graviton, while external gravitons are only tangent for ~10-21 of the proto-matter’s orbit. With a 3-dimensional orbit, this gives the proto-matter a diameter ~ 8*10-26 m. From the frequency locking assumed by the theory, this gives the gravitons a base frequency ~1.2*1033/sec. From the calculated diameter of the electron, 853 fm, the gravitons there have a V~1013c and energy of ~38.6 KeV. This gives a rest energy of ~-4*1017 ieV.