"Picture a single ratio as a number which affects the legnth of time you are in a single gear. Lower the number, and your gear legnthens. Make the number higher, and your gear becomes shorter. Your plan, in making your gear ratios, is to modify the gear numbers so that you are able to run thru your 1st ,2nd , and 3rd gear fairly quick while the other 3 gears dont drop too much in the rpm band when you shift. Also, you want to reach redline in your last gear just before you cross the finish line." -GTP
Making your own ratios will save you hours of looking for a pre-made pair that works. Once you master the art of ratios, you will master the art of winning. They come hand in hand.
General Knowledge: The higher the # the faster the shift, and vice-versa.
The first thing you need to understand is that you have to have patience. Ratios can be fairly complicated. So just keep at it.
Start by picking a final gear. Pick a higher number depending on how fast you plan on shifting at first. Final gear determines the speed of all the gears.
After you pick a final. You will want to go 1 gear at a time. Start at first gear, and work your way down all the way to 6th. You want to set your ratios so they accelerate fast in the beginning, and lengthen out towards the end while still gaining speed at a consistant rate.
Every gear has a job:
First gear--> A very fast shift, yet still possible to hit without creating engine damage. You want to gain as much speed as you can here without going over your pre-defined shift point. Remember if you can get past first gear with no problem, it makes the rest of your race that much easier. First gear makes or breaks you.
2nd Gear--> Another quick shift. You want to continue to gain speed, but you want to make sure you can hit your shift point without killing the engine.
3rd Gear--> Quick enough, but this is where you set the tempo for the rest of your run. If you like faster shifting ratios, keep this number higher. Remember you dont want it to be to slow. You still want to gain speed, just make it comfortable for you to hit. If you can hit your first 3 gears, normally the end of the race is a breeze.
4/5th gear--> This is where you want to lengthen it out. You want to plan a good finish for 6th gear. Make sure you are gaining enough speed, and leave room for a good size 6th gear at the end of the run.
6th Gear--> This is where you get into the nitto gritty of things. You wouldnt believe how much .001 will matter when editing this part of your ratios. You want 6th gear to PULL your car thru the finish. You want it to move the RPM so that right when your car is finishing the race, your RPM needle is just passing redline (*NOTE* With some cars your 6th gear will go past where your normal 6th gear shift point would be IE. Choice F-Type.)
Final--> Final gear determines how fast the other gears shift. If you think your gears are evenly spread out, but "dang it they just arent fast enough or slow enough.." well final will fix that problem. Just adjust accordingly.
Well hopefully this helped everyone who took the time to read it. Remember the more you play around with ratios, the better understanding you will get of them and what you can accomplish with them has no limits.