Quote:
Originally Posted by arquitecto
STEP 3
Now, Redline always makes 300Nm but remember that redline in one gear equates to a lower rpm in the next gear.
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I've not checked your calculations, but you have to consider that the Torque/Power chart you used is wrong (although being official from BMW).
It shows 300 Nm at 7000 RPM on the torque curve and approx. 260 kW at 7000 RPM at the power curve. One of these values MUST be wrong because:
P = M * n * 2 * PI * 1/60 = 300 Nm * 7000 1/min * 2 * 3,1416 * 1/60 = 219912 Nm/s = 219,912 kW
If anyone bothers he should write this to BMW
However, my wheelforce diagram posted above is using 350 Nm at 7000 RPM which leads to the correct power - assuming that the shown power curve is correct.