Beginner drag tuning tips

[Cjrw59]

Hey I have a few cars that could be used for drag racing but I'm clueless about the setup there are a few questions

1. What should I do to the transmission?
2. What should I do to the L.S.D?
3. What should I do to the ride height?
4. What should I do with the downforce?

Answers would be really appreciated thanks.

 

[Doncowleone]

Hey I have a few cars that could be used for drag racing but I'm clueless about the setup there are a few questions

1. What should I do to the transmission? Final gear all the way to the right, Top Speed all the way to the left.
2. What should I do to the L.S.D? Adjust the First and Second numbers to counter act wheel spin.
3. What should I do to the ride height? Slam the front, lower the rear a tiny bit.
4. What should I do with the downforce? low front, moderate rear.

Answers would be really appreciated thanks.

My answers are in Bold. They are also for 1/4 runs at Indy.

 

[Cjrw59]

What should I adjust in the LSD though

 

[Cjrw59]

What do you mean by slam the front

 

[Doncowleone]

What should I adjust in the LSD though

I'm still trying to learn how to adjust the LSD, and from what I've read/been told the LSD and suspension are two of the 3 major factors in good launch traction for high horsepower cars. The third is the transmission.

 

[im2fst4u]

Here this will tell you how a differential works.

Now when your tuning your LSD there's a few thingsin regards to corners)

Initial torque: this value is how much torque it will take for the LSD to activate. This is in control of the later settings and is very influential, it sets the benchmark power to activate. If it's set low it will cause the car to be more loose in general, and with a high setting the car will not be very co-operative.

Acceleration Sensitivity: lower # equals faster corners but the car will oversteer more under power. Higher number makes it more stable under power but more likely to understeer.

Braking Sensitivity: lower number allows sharper turn entry but results in rear end instability. Higher number allows for more stable entry but increases understeer under braking.

Rule of thumb; track with faster corners use low numbers. On a track with slow corners increase numbers to your liking(also when it rains).

I know this doesn't help too much with drag racing (I'm learning tunes for this too) but if you "lock up" the differential with high numbers than the car will tend to stay straight because the power won't travel from wheel to wheel as easily, but it will not steer well at all. (In theory, I've never tried it yet) Although take this info for doing track tunes.

 

[Doncowleone]

Here this will tell you how a differential works.

Now when your tuning your LSD there's a few thingsin regards to corners)

Initial torque: this value is how much torque it will take for the LSD to activate. This is in control of the later settings and is very influential, it sets the benchmark power to activate. If it's set low it will cause the car to be more loose in general, and with a high setting the car will not be very co-operative.

Acceleration Sensitivity: lower # equals faster corners but the car will oversteer more under power. Higher number makes it more stable under power but more likely to understeer.

Braking Sensitivity: lower number allows sharper turn entry but results in rear end instability. Higher number allows for more stable entry but increases understeer under braking.

Rule of thumb; track with faster corners use low numbers. On a track with slow corners increase numbers to your liking(also when it rains).

I know this doesn't help too much with drag racing (I'm learning tunes for this too) but if you "lock up" the differential with high numbers than the car will tend to stay straight because the power won't travel from wheel to wheel as easily, but it will not steer well at all. (In theory, I've never tried it yet) Although take this info for doing track tunes.

Great post and good information, now can you explain how to setup the differential for straight line traction? I only turn twice during a drag race 1. To line up and 2. to turn around and go back.

 

[TT3AZ]

Hey I have a few cars that could be used for drag racing but I'm clueless about the setup there are a few questions

1. What should I do to the transmission?
2. What should I do to the L.S.D?
3. What should I do to the ride height?
4. What should I do with the downforce?

Answers would be really appreciated thanks.

Go to the tuning section, and search the threads, there are several good discussions with good output. Tuning is far to complex to be answered shortly. It also depends on the type of car, drivetrain, tq/hp curve, ssr7 or 1/4 mile tune, etc, etc, etc.

 

[TT3AZ]

My answers are in Bold. They are also for 1/4 runs at Indy.

1. What should I do to the transmission? Final gear all the way to the right, Top Speed all the way to the left. - Ehe, it depends on the type of the cars etc, as i wrote above. First gear is very crucial and you have to use trial and error to get no wheelspin or similar good launch.
2. What should I do to the L.S.D? Adjust the First and Second numbers to counter act wheel spin. - The LSD has little or no impact on straight line performance, the LSD is also flawed according to different sources.
3. What should I do to the ride height? Slam the front, lower the rear a tiny bit. - It also depends, on rwd cars, low front, high end is good, it also works good for 4wd cars.
4. What should I do with the downforce? low front, moderate rear. - No downforce at all, you want minimum downforce in drag racing.

 

[ampire]

I like to run the LSD at like 40/40/5 for straight line. I find it works well. The biggest thing might be rear toe, like .60 or so.

 

[DLR]

1. What should I do to the transmission? Final gear all the way to the right, Top Speed all the way to the left. - Ehe, it depends on the type of the cars etc, as i wrote above. First gear is very crucial and you have to use trial and error to get no wheelspin or similar good launch.
2. What should I do to the L.S.D? Adjust the First and Second numbers to counter act wheel spin. - The LSD has little or no impact on straight line performance, the LSD is also flawed according to different sources.
3. What should I do to the ride height? Slam the front, lower the rear a tiny bit. - It also depends, on rwd cars, low front, high end is good, it also works good for 4wd cars.
4. What should I do with the downforce? low front, moderate rear. - No downforce at all, you want minimum downforce in drag racing.

Yep. What he said. Here is my version

1. What should I do to the transmission? Final gear all the way to the right, Top Speed all the way to the left. - If you want to be very fast you will have to tune each gear individually. This works for a beginner I guess but once you encounter the pros, fine tuning will be necessary.
2. What should I do to the L.S.D? Adjust the First and Second numbers to counter act wheel spin. - As TT3AZ said, this has little to no affect on straight line performance.
3. What should I do to the ride height? Slam the front, lower the rear a tiny bit. - I always drop the front and raise the rear. This concept is generally the same for all cars but values differ from car to car.
4. What should I do with the downforce? low front, moderate rear. - No downforce at all. Take off all aero kits.

 

[DLR]

MAKE A GT5 DRAGGING SECTION!!

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https://www.gtplanet.net/forum/showthread.php?t=217593