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## Main Question or Discussion Point

I have a car engine specs and I wanted to estimate the torque at each speed and plot the torque curve.

I have calculated the road load or the running resistance force for all gears at different RPM's and found the speed (m/s) for each RPM.

How to estimate the torque of the engine in order to plot the torque curve?

I have calculated the road load or the running resistance force for all gears at different RPM's and found the speed (m/s) for each RPM.

How to estimate the torque of the engine in order to plot the torque curve?