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Author
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Topic: q for alex and other drag racers
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two89w
Gearhead Posts: 196
From: sydney australia
Registered: Sep 2002
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posted 11-06-2002 01:06 AM
   
im planning on going to a drag meet and racing my car.im looking for some tips on the best way to launch my car and any other useful tips i can get
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Fastymz
Moderator Posts: 11429
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 11-06-2002 01:27 AM
I'm new to this too,the main avice I'd give is relaxe,and enjoy the ride. 
Pratice leaving at differnet rpm's until you get the times.SCOOP ------------------
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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jsracingbbf
Gearhead Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 11-06-2002 01:50 AM
Do you leave off a trans brake or footbrake, slicks or treaded tires? Really need to know this before saying how to approach a launch. Big difference in the way you launch depending on what you have. The launch starts when you drive up onto the apron. Debris in the tread of your tires is a big one for tread type footbrake cars. Besides helping your car launch better, the slick/transbrake guys will love you if you don't drag a bunch of sand up to the starting line.
Jerry
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two89w
Gearhead Posts: 196
From: sydney australia
Registered: Sep 2002
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posted 11-06-2002 06:59 AM
ok,car has a tremec and 4.1 diff and treaded tyres.does that help??
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jsracingbbf
Gearhead Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 11-06-2002 09:34 AM
I'm going to let someone who races manual trannys answer you on this one. It's been a while since I have raced a manual. I wouldn't want to give you wrong advice. As for the treaded tires, I would stay away from the water box and keep the treads clean.
Good Luck!
Jerry
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Moneymaker
Administrator Posts: 19704
From: Lyons, IL, USA
Registered: May 99
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posted 11-06-2002 10:26 AM
Well, without actually driving the car this is tough. Probably the best thing for you to do on the first pass is to walk the car off the line by ever so slightly slipping the clutch as you are flooring the gass.
This method will allow you to gauge how much power your tires can take. If you do not experiance much wheel spin, then you can try holding the engine at 2000 or so RPM and letting the clutch out briskly on the next pass as you are depressing the gas pedal to the floor.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
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Mark T 7724
Journeyman Posts: 83
From: Palmdale, CA
Registered: Nov 2000
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posted 11-06-2002 09:39 PM
Like Alex said start at 2000 rpm and try to let the clutch out briskly, One thing that I suggest is to make an adjustable pedal stop to go beneath the pedal. The more "Air Gap" you have between the disk and the pressure plate the more tendancy you will have to shock the drive train and spin the tire. Try to get 1.5 to 2 inches between the time the clutch starts to engage and being fully depressed. Watch out though the less "Air Gap" the more you'll slip the clutch and the tendancy will be to overheat it. Once you find a spot that you have minimal tire spin without slipping the clutch then try raising your RPM 200 at a time untill your 60ft time falls off. Hope this helpsDisclaimer: This will eventually find your weakest part in the drivetrain!!!
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