Norman Dog

iTrader: (1)

What would be the optimum RPM to change gear based on the following?



Seems to make peak power at 6270rpm and peak torque at around 4800rpm?

tubbytommy

iTrader: (20)

6k

uk300_kev

iTrader: (2)

5.5-6k looking at the torque/power figures. 6k feels better on my car

Luminous

iTrader: (3)

I would say 6.4k as you get best acceleration from maximising average power output through the gears.

Sprint Chief

^^^ What Luminous said

Accleration is (Power * Mass / Velocity) - since your mass and velocity are fixed at a given point, you need to maximise power. To do that, we ideally need to know the RPM drop between gears, but your power graph has a fairly flat top between 5k and 6.5k so you want to stay between those (if your ratios allow) for max accel.

Although judging by the graph I'm assuming the throttle was closed at 6.4k rpm so we don't really know what is going on beyond there - I can guess the power is not going to go further up (unless there is something really odd going on!) but it would be useful to know what happens between 6.5k and 7.0k. Assuming your car is happy to rev to those rpms of course.

T5NYW

iTrader: (4)

I'd say, If you change @ xrpm and take up drive in the next gear up at 4.7- 5K that should be fine