- 147
- Florida
- jblackrevo9
After doing a lot of research and playing around with the transmission, I figured out exactly why cars recieve their final drive like why some cars have a 4:1 ratio or 3:1 ratio.
Pay attention to the motor size and the amount of power and torque each car has.
Example:
Horsepower:276
Torque:328lbs
(Loses about 60 percent of torque at redline.)
Honda NSX has a 4:1 final drive ratio (about 4.785). The crankshaft that transfers engine power to the differential spins 4 times for each rotation of the tire. A pivot or pinion gear is attached at the end of the crankshaft which is responsible for turning the bigger gear that controls tires. I'm not going to go into details, just want to keep this simple.
Now back to what I was saying....
The NSX has the 4:1 ratio because it does not have a very powerful engine or enough torque for 3:1 ratio, basically this would under perform unless you increase it.
The engine size , torque,horsepower, and weight plays a part in determining final drive.
The appropriate drive helps out in racing around circuit since each tires travels differently around turns.
Another example would be Nissan GT-R which has a 3:1 final drive or 3.700.
4WD are heavier and all power are going to all 4 tires which is why it's is necessary to have the crankshaft spinning fast and not slow.
4 cyclinders seem to have higher final drives since they don't have powerful engine or not a lot of torque most if the time.
To add to this. The Final drive is also determined based off of gas mileage too.Some cars (stock) are purposely underpowered to have better gas mileage.
If you were to add more power and torque to a tuned car then it is possible for the vehicle to perform well at a different ratio.
Example:
Going from a 4:1 to 3:1 final drive
If you notice with gt500 cars or below. They have 3:1 ratio and this is because it provides a balance of power and gas mileage since this vehicles are used for endurance races.
But keep in mind it is not so simple. Having a 4:1 ratio does not mean you will always have better acceleration, you will have to set appropriate gears with powerband and having the proper final drive.
RATIOS
In Granturismo 6 gears size is determined by the final gear ratio in this game.
A 2:1 means the gear connected to the crankshaft (pivot gear) becomes bigger while a 4:1 ratio means it has become smaller.
Not all car can handle a 2:1 ratio since engine and power varies.
FF or front drives are trick since they don't have a crankshaft and don't have a 2:1 ratio in the game.a few can go as low as 2.500.
2:1 ratio would be good for drag racing but used for circuit and you're going to face a problem with the car doing to much work to maintain cruising speed. Remember torque comes after acceleration.
Example
1st 5.890
2nd 4.900
3rd 2.878
4th 1.900
5th.1.700
6th 1.200
final: 2.000
Yes It works in the game but in real life it wouldn't work so great.
In the last gear (6th) you have a 1.2:1 which means that the engine is putting in more work than the transmission (1) which it shouldn't since the car is already in motion and weight is irrelevant at this point. The engine has to work more harder to move this big gear as compared to a .700:1 ratio where torque takes over and continues the work.
Remember not all cars are the same and this could work on a car with a less powerful engine.
4:1 ratio provides better acceleration and performance but not always as a 3:1 can also do the same. It comes down to ENGINE,TORQUE, and Horsepower.
Acceleration gets car from 0-100
Torque keeps it moving and stay moving against friction which acts against vehicle.
Makes since?
Typical
4WD drives should have a 4:1 but if you are doing a endurance race, you will have to compromise and go for a 3:1 ratio with lower gear (big number) to balance.
4 cylinder engines also do great with a 4:1 ratio
V6 engine is pretty versatile and can range from 2:1 and all the way up to 5:1
V8 engine are versatile but mainly a mid to high ration since most of the time they have a lot of torque.
V10 engine is versatile.
V12 is versatile.
a V12 and a V10 engine can do well at 2:1 or higher since these engines are more powerful.
REMEMBER
You will still need to set your transmission gears with appropriate powerband. If you do not do this then you car will still under-perform even with the proper final drive or final gear ratio.
Any questions....hit me up
Pay attention to the motor size and the amount of power and torque each car has.
Example:
Horsepower:276
Torque:328lbs
(Loses about 60 percent of torque at redline.)
Honda NSX has a 4:1 final drive ratio (about 4.785). The crankshaft that transfers engine power to the differential spins 4 times for each rotation of the tire. A pivot or pinion gear is attached at the end of the crankshaft which is responsible for turning the bigger gear that controls tires. I'm not going to go into details, just want to keep this simple.
Now back to what I was saying....
The NSX has the 4:1 ratio because it does not have a very powerful engine or enough torque for 3:1 ratio, basically this would under perform unless you increase it.
The engine size , torque,horsepower, and weight plays a part in determining final drive.
The appropriate drive helps out in racing around circuit since each tires travels differently around turns.
Another example would be Nissan GT-R which has a 3:1 final drive or 3.700.
4WD are heavier and all power are going to all 4 tires which is why it's is necessary to have the crankshaft spinning fast and not slow.
4 cyclinders seem to have higher final drives since they don't have powerful engine or not a lot of torque most if the time.
To add to this. The Final drive is also determined based off of gas mileage too.Some cars (stock) are purposely underpowered to have better gas mileage.
If you were to add more power and torque to a tuned car then it is possible for the vehicle to perform well at a different ratio.
Example:
Going from a 4:1 to 3:1 final drive
If you notice with gt500 cars or below. They have 3:1 ratio and this is because it provides a balance of power and gas mileage since this vehicles are used for endurance races.
But keep in mind it is not so simple. Having a 4:1 ratio does not mean you will always have better acceleration, you will have to set appropriate gears with powerband and having the proper final drive.
RATIOS
In Granturismo 6 gears size is determined by the final gear ratio in this game.
A 2:1 means the gear connected to the crankshaft (pivot gear) becomes bigger while a 4:1 ratio means it has become smaller.
Not all car can handle a 2:1 ratio since engine and power varies.
FF or front drives are trick since they don't have a crankshaft and don't have a 2:1 ratio in the game.a few can go as low as 2.500.
2:1 ratio would be good for drag racing but used for circuit and you're going to face a problem with the car doing to much work to maintain cruising speed. Remember torque comes after acceleration.
Example
1st 5.890
2nd 4.900
3rd 2.878
4th 1.900
5th.1.700
6th 1.200
final: 2.000
Yes It works in the game but in real life it wouldn't work so great.
In the last gear (6th) you have a 1.2:1 which means that the engine is putting in more work than the transmission (1) which it shouldn't since the car is already in motion and weight is irrelevant at this point. The engine has to work more harder to move this big gear as compared to a .700:1 ratio where torque takes over and continues the work.
Remember not all cars are the same and this could work on a car with a less powerful engine.
4:1 ratio provides better acceleration and performance but not always as a 3:1 can also do the same. It comes down to ENGINE,TORQUE, and Horsepower.
Acceleration gets car from 0-100
Torque keeps it moving and stay moving against friction which acts against vehicle.
Makes since?
Typical
4WD drives should have a 4:1 but if you are doing a endurance race, you will have to compromise and go for a 3:1 ratio with lower gear (big number) to balance.
4 cylinder engines also do great with a 4:1 ratio
V6 engine is pretty versatile and can range from 2:1 and all the way up to 5:1
V8 engine are versatile but mainly a mid to high ration since most of the time they have a lot of torque.
V10 engine is versatile.
V12 is versatile.
a V12 and a V10 engine can do well at 2:1 or higher since these engines are more powerful.
REMEMBER
You will still need to set your transmission gears with appropriate powerband. If you do not do this then you car will still under-perform even with the proper final drive or final gear ratio.
Any questions....hit me up
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