The movement of peat machines is complicated by the presence of unevenness in the form of bumps and stumps, high moisture content of the deposit in some areas and, finally, deformability of the peat deposit. All this significantly worsens the passability of peat machines in comparison with machines moving on flat hard ground. The purpose of the tests is to select the most rational frame variant in terms of its durability, minimum weight and manufacturability of construction.