I need to model truck into torcs, with the following characteristics:
Weight 29 tonnes
Length 12.2 meters
Width 2.6 meters
Height 4.4 meters
Tires with diameter of 2095cm
The gears and time to achieve each
1st. - From 0 to 05 km / h 10 seconds
2nd. - From 05 to 10 km / h 15 seconds
3rd. - From 10 to 20 km / h 15 seconds
4th. - From 20 to 35 km / h 25 seconds
5th. - From 35 to 45 km / h 40 seconds
6th. - From 45 to 60 km / h 50 seconds
7th. - From 60 to 75 km / h From 50 to 60 seconds
8th. - From 70 to 85 km / h From 50 to 60 seconds

Used a model of the car and changes made to reach those speeds, but the truck is no speed in slope.
The marches were thus:

<section name="Gearbox">
    <attnum name="shift time" val="1.00000"/>

    <section name="gears">
      <section name="r">
    <attnum name="ratio" val="-3.160000"/>
    <attnum name="efficiency" val="0.799988"/>
      </section>

      <section name="1">
    <attnum name="ratio" val="15.0000"/>
    <attnum name="efficiency" val="0.006"/>
      </section>

      <section name="2">
    <attnum name="ratio" val="6.1"/>
    <attnum name="efficiency" val="0.009"/>
      </section>

      <section name="3">
    <attnum name="ratio" val="4.0"/>
    <attnum name="efficiency" val="0.012"/>
      </section>

      <section name="4">
    <attnum name="ratio" val="2.8"/>
    <attnum name="efficiency" val="0.020"/>
      </section>

      <section name="5">
    <attnum name="ratio" val="2.000000"/>
    <attnum name="efficiency" val="0.015"/>
      </section>

      <section name="6">
    <attnum name="ratio" val="1.430000"/>
    <attnum name="efficiency" val="0.030"/>
      </section>

      <section name="7">
    <attnum name="ratio" val="1.1270000"/>
    <attnum name="efficiency" val="0.30"/>
      </section>

      <section name="8">
    <attnum name="ratio" val="0.78000000"/>
    <attnum name="efficiency" val="0.045"/>
      </section>
    </section>
  </section>

I need help to complete it.