Transmission Overview

There is only one effective technique to set up a transmissions in Gran Turismo, this is known as a "gearbox flip". There is vital data missing that would properly calculate gear ratios such as tyre circumference. I've had to adapt the standard gearbox flip technique for it to work seamlessly within Gran Turismo 7. There is a continuation to the technique I've developed for Gran Turismo 7 that has a very minor performance increase. It allows for smoother torque delivery because the engine speed is slower than wheel speed.

Flipping the gearbox is the first step to optimising power output at high speed and torque output at low speed. However it does not optimise the individual gear ratios.

Image showing the relation between Gear Ratios and Top Speed

• Faster acceleration once rolling.

• Better traction whilst accelerating.

• Utilises all gears, as lower gears are longer.

• Minimise rpm loss after shifting gears.

• More efficient fuel saving when fuel saving.

• Slow standing starts if the vehicle has high amounts of mechanical grip or low torque output.

1. The first step I take is flip the gearbox, and figure out the maximum top speed required for the given circuit.

2. Put the final drive to the minimum value, put first gear to the highest value and set the last gear to the top speed for the circuit (found by using flipped transmission).

3. input the first gear top speed into the Transmission Calculator then increase the gear spread till the Calculator suggests a near identical, if not slightly lower second to last gear (5th gear in a 6 gear transmission). This allows for a better power and torque spread throughout the gearbox, as well as best available off the line acceleration.

Done.

Video showing the acceleration rate of a standard flipped gearbox from a standing start

Video showing the acceleration rate of a FILObox optimised from a standing start