The Perfect Launch During a Drag Race

[v12]

how abt revvin the engine till peak torque RPM *wont that prevent wheelspin?

Originally Posted by [b

Quote[/b] ]It all depends on yor gear ratios, tyres, road surface etc

That means reduce tyre pressure right to prevent wheelspins., right?

[Tom]

doenst anyone here use the BRAKES??

[v12]

Originally Posted by [b

Quote[/b] (Tom @ Sep. 01 2004,10:27)]doenst anyone here use the BRAKES??

For A/T's right??

[Rehaan]

Originally Posted by [b

Quote[/b] (Tom @ Sep. 01 2004,10:27)]doenst anyone here use the BRAKES??

Right.......!

thats a point we have totally not mentioned here!
You can pull up the handbrake (raise the engine) and engage the clutch to a degree that it does not overpower the handbrake, and then when the lights go off lower the handbrake and continue to engage the clutch/revv the engine.

This what you talking abt tom? or are you talking abt the brake pedal, which i guess could also be used in this way, but would require a bit of fancy footwork...and ive never really heard of anyone doing that.....except in AT cars ofcourse.
So tell us....

cya
R

[Team Fiat]

My plan of action in a drag is simple pump it till it pumps out Yeah

[GTO]

Originally Posted by [b

Quote[/b] ]
You can pull up the handbrake (raise the engine) and engage the clutch to a degree that it does not overpower the handbrake, and then when the lights go off lower the handbrake and continue to engage the clutch/revv the engine.

Interesting. I wasnt aware of this technique at all. Will try the next time around with Gtech pro and update on any improvements.

Boy, where are those Eagle F1s?

GTO

[Rehaan]

Originally Posted by [b

Quote[/b] (GTO @ Sep. 01 2004,16:53)]Boy, where are those Eagle F1s?

Thats what i should be asking YOU!

btw - OT, but i saw a dark blue city with blackish alloys and silver rims.... looked pretty good i must admit...kinda evil ...couldnt get a great look as i was zipping by.

cya
R

[Psycho]

The point of improving traction, do note that during a drag the tyres are deflated a bit as they get heated as they go down the track and this could result in a tyre blowout. Hence these tyres are deflated to a point so that by the time they are hitting the top speed the tryes are at top pressure due to the expanding air inside them. The wheel spin is used for 2 primary reasons here:

1) To heat up the rubber for good traction / to increase surface temp fo the tyres
2) As the tyres are deflated they do not form a perfect circle hence the contact area is not right this is corrected by spinning the tyres at high speeds which gives the tyres the best contact to the track. This can be seen on slow speed videos of pro dragsters.

These reasons may not be true for the Indian cars as they do not have as much BHP / Power to weight ratio. And for a professional start each car has its own setup this is best qualified by trying a dead start at various RPM's for the car till the optimum RPM is reached with minimum wheel spins at the highest take off speeds.

[Tom]

uh...i was actually talking abt using the brakes to slow down after the quarter...

[Shan2nu]

Dragsters use something called the "Parachute" LOL. But then, one could always rely on a brick wall at 401 meters.

Regards..
Shan2nu

[KS Motorsport]

*All what is important for a good start is knowing ur engine ie.when it make the best torque.Its a fineline between wheel spina nd take off.
*I use NOS to take off properly,no wheels spinning and no los of traction(stage 1)
(Stage2)80 shot NOS in 2,3 and 4 gears.


I think i have gone mad with nos *

Karan

[Jaggu]

NOS for launch OMG, would be tough thing to keep the wheels from spinning

[GTO]

Originally Posted by [b

Quote[/b] ]All what is important for a good start is knowing ur engine ie.when it make the best torque.Its a fineline between wheel spina nd take off.

Hey KS,

If I remember correct, your Honda City was the only Indian car to break the 15 second barrier in the Dragrace. How about sharing that experience with us?

GTO

[X-Machine]

Yeah....i guess know ur car before starting to experiment.NOS on launch is sumthing crazy.I`ve seen people use it in the 2nd though.Tell us ur experience KS.

[KS Motorsport]

Hi,
When u cross the line at about 160 something in a car that wieghts 700-800kgs can get a little scary cause the car (bad honda roadhandling) sways underbraking.There a turn soon after the finish line.

When i start there is wheel spin,but not that much as the loose time.
I start and as soon as i think that now the nos will not casue wheel spin i hit the"go baby go" button & feels dammm good

I was grinning when i was in the 2 gear.I knew it was going to be a good time.
The car that was second.Silver lancer with the blue stickers(another KS car)that driver is mad.He gets me to detune his nos for city driving.He likes to use it to over take when his going up a bridge(J,J & phoenix mils)

Karan