FWD VS AWD launch

[Neutrino]

Srt4 vs Evo 8

http://users.adelphia.net/~revolution2zz/SRTOWN.AVI

right click save as

[lumpydick]

i know to launch an all wheel drive car you must put it in neutral rev it up to about 8000 rpms and drop it in reverse but on a frd you only bring it up to 5500 rpms

[DomesticRicer]

lol?

[Partizan]

Mind boggling.... how do you drop it in reverse? Also the launch RPM changes with each car, there is no universal setting as it's whatever rpm the driver feels most comfortable with.

[SIKCRX]

launch where your torque curve begins.

[Neutrino]

Ok my post has nothing to do with techniques of launching a car. It just a video that shows the disadvantages of a FF(srt4) car compared to an AWD(evo) car at launch.

Its a street racing vid.

And please disregard the statements made by lumpydick he was banned for a reason and his remark has nothing to do with the video I posted.

Originally Posted by SIKCRX

launch where your torque curve begins.

your torque curve begins at the smallest crank movement which is well well below idle....as long as your crank spins there is torque aplied


so basically yor torque curve starts at 0.000000.....1 rpm ---->not a god place to launch

[mycivic]

I think AWD always has an advantage over other drivetrains when it comes to launching.

[fatninja19]

that Evo creamed the srt4 pretty bad alright, but from the sound of the tires trying to grab.. it didn't seem that the srt4 driver was all that great.

[-The Stig-]

Originally Posted by Neutrino

your torque curve begins at the smallest crank movement which is well well below idle....as long as your crank spins there is torque aplied


so basically yor torque curve starts at 0.000000.....1 rpm ---->not a god place to launch

Well of course the crank produces torque as long as it's spinning. You know what he ment. He means to launch just as your car starts to make serious torque. Meaning launch where it really starts to arch.

For a Good Example:

Launching My 240z isn't too hard cause she doesn't make much power. Optimal launch area is 3,000-3500rpm. I can go higher but then if I don't time the clutch slippage just right I just roast the tires.

For a Bad Example:

Launching my Nova will be hard, I have a small stall converter of 2000rpm. Which just so happens to be where this Dyno chart begins. If you notice, it makes just a tad over 400ft-lbs of torque... 408 to be exact. Launching will be tricky... a large tire will be needed to help plant any of that power. I'll probably have to launch it around 1500-1700rpm... not sure yet... extensive testing will be needed to determine that.


Now, I'm not saying the torque curve on my Nova's 388 is bad... it's actually really good. It's really flat, but launching wise it'll be a pain in the arse.


EDIT: Now that you can see visually what kinda power my V8 makes, you can hopefully see why I chose not to slide it into the 240z. I wouldn't ever get any traction. Low RPM torque monster motor = bad for 240z

[Neutrino]

yeah i know he meant but its fun to be a wiseass sometimes


and about your torque curve...if you are so worried about traction why not get a longer ratio 1'st?

[-The Stig-]

Originally Posted by Neutrino

yeah i know he meant but its fun to be a wiseass sometimes


and about your torque curve...if you are so worried about traction why not get a longer ratio 1'st?

Cause to modify a transmissions gear ratios so kuztumz. I don't even know where to begin, where to go... who to ask. Plus the cost of such a conversion would be astronomical.

[Neutrino]

Originally Posted by RedNeck383

Cause to modify a transmissions gear ratios so kuztumz. I don't even know where to begin, where to go... who to ask. Plus the cost of such a conversion would be astronomical.

well i really don't know that much about ATX's so i really could not comment on that

but what abot a limited slip that will lenghten your ratio's

[-The Stig-]

Originally Posted by Neutrino

well i really don't know that much about ATX's so i really could not comment on that

but what abot a limited slip that will lenghten your ratio's

Cause then I'd be slow in the quarter mile. That's what this car is for, I could spend money on the suspension and make the car handle like crazy for a '70s Muscle car. But why? Even I'd call that a waste of money.

I'm most likely going to get a 3.73-4.10 final ratio. I haven't decided which yet, but I may get the 3.73 then upgrade to the 4.10 later.