Belt velocity is V = (╧Ç * dΓéü * nΓéü)/60
Belt tension is F = P / V
Belt length is L = (╧Ç * dΓéü/2) + (╧Ç * dΓéé/2 + 2D + ((dΓéü - dΓéé)┬▓/4D)
Torque is T = P / (2 * ╧Ç * n/60)