Originally Posted by T_Terror
Im trying to figure out something that has been bugging me for a while. If you increase your power does that mean you will be travelling at a faster speed?
Basically, im asking if for example, your car does 100km/h at 3000rpm at 3rd gear. Now lets say you increase engine power, does that mean that at 3000rpm you will be travelling at 120km/h or wateva since you are making MORE power at the same rpm?
Or is road speed governed solely by the gear+ diff ratios?
This is probably pretty simple but I cant think of a definite answer.
Thanks for the help.
If you increase the power you are making more RPM.
What determines the speed is:
Engine RPM * Gearbox Ratio * Diff Ratio
3000RPM * 0.8 * 3.11 = 746.4 (im not sure if thats correct)
0.8 is for top gear from memory.
Your diff ratio will depend on what car you have.
So if it is correct that means in 1 minute your wheels spin 746 times!
So calculate the circumfrance of you tyre and you can determine how far you can go in 1 minute
1.5m x 746 = 1119 meters/min
1119 meters x 60minutes = 67140meters (or 67.14km)
So that gives you 67km/h