Raptor Tuning Information Database

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Transmission Tuning


How to Set Your Gearbox by Praiano's GT6 Tunes
GT6 Transmission Tuning Made Easy [The Basics] by jtqmopar




TRANSMISSION CALCULATOR by tkc cz!


What????
I think my excel file will be usefull for who want to spare time going on track checking speed.
I've copy and paste this example that i had published a few months ago in GT5 tuning guide thread.
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This is a gearbox i've made for a maxed viper for 1/4 mile .
To know the tire perimeter, i just need to enter all the others datas i have first.
Then i go on the track and i check my speed for a given gear at a given RPM.
After i enter by approximation a tire perimeter to match with the speed i saw on track.
viperquartermile.jpg

You can build an excel sheet like this with those formulas:
OUT BOX RPM = SHIFT RPM / GEAR RATIO
WHEEL RPM = OUT BOX RPM / FINAL GEAR
KMH = ((TIRE PERIMETER X WHEEL RPM) X 60) / 1000
MPH= KMH * 0,6213
 
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Drive Train & LSD Tuning:

LSD Guide Summaries by Motor City Hami

LSD Accel: Sole purpose - manage inside & outside wheel spin
- Inside wheel spins first - RAISE setting.
- Outside wheel spins first - LOWER setting.
- Watch replay with INSTRUMENTS on to see which wheels are spinning when.


LSD Decel: Manage stability under a) braking b) turn-in c) Coasting

- If your car is loose (oversteer) RAISE this setting.
- If your car has understeer, LOWER this setting.

Nearly all of my under 550PP street car tunes have settings between 5 and 7.
On pure race cars like LMP cars, JGTC, FGT, F1, 2J, etc., I run much higher decel settings.


Initial Torque: determines how much power is needed to make the differential activate/lock.

- higher # produces more understeer.
- lower # produces more oversteer.
- does not add or subtract acceleration.
 
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Suspension Tuning
Advanced Spring Rate Tuning by KonKong
- A simple mathematical expression/formula to denote spring rate settings.
- Consider the car's engine/chassis layout
- Guides will tell you that a softer front paired to a stiffer rear will result in oversteer or vice versa, but they never mention that *the front spring rate doesn't necessarily have to be softer than the rear.

Suspension Tuning Guide by Trewer_Rath

- Car feels: It could be....
 
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