Hey guys, I am kinda simulate car dynamics with given parameters. I actually want simple solution. I have been doing research for a couple of days and here's what I got till now: First of all I want use metric system. (km/h, sn, kg, Nm etc...) Now I have RPM and Torque values. Here's what I did to calculate linear velocity of car at given RPM and torque: 1. I have converted (lb ft) torque values to (Nm) 2. I have calculated transmission output torque using gear ratio. 3. Assuming car has moment of inertia value 50 (I guess it is ok, isn't it?) I have calculated Angular Acceleration 4. Assuming car has a wheel with radius 0.5m, I have calculated Linear acceleration. 5. Then I have calculated linear velocity, assuming time 1 sec. And you can see these values from here: http://spreadsheets.google.com/pub?key=tcXiKSHtGlDYsCu1utu6Ulw&output=html [Broken] So is it correct? anything I miss? did wrong? Any suggestions like to this change this to that?? Any help is appreciated, thank you.