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Author Topic:   Dry slick track/Hard tire
75xracer
Dirt Full Roller

Total posts: 41
posted December 05, 2002 03:18 PM  
What adjustments do you guys make for a dry slick track with a hard tire rule? Say for instance you run good at a track when it is heavy with soft tires, but suck when it dries out and have to run a hard tire. Other than the j-bar, what would you do with the springs/shocks, etc.

emjay
Dirt Roller

Total posts: 5
posted December 14, 2002 10:42 AM  
I always go to a taller gear, or kill HP. Lot of Late Model guys are going to a Vac. carb or unhooking the secondaries.

Racer111
Dirt Freak

Total posts: 259
posted December 22, 2002 07:46 PM  
Dont change gears,a slick track your going slower so you need a gear to get you off of the corner.Slick track setup depends on rear suspension,adding lead behind the rearend will help,moving out RF or LR tire,changing lift bar spring,stiffing LF coil,split shocks,Raising the top left bar on a 4 bar,dropping the lr bar on a swing arm.taking out timing,but mostly what helps is a soft foot.

emjay
Dirt Roller

Total posts: 5
posted December 24, 2002 06:57 PM  
Why do you need gear to come off of corner when tires are spinning?????????????

racerwilson
Dirt Freak

Total posts: 357
posted December 31, 2002 09:32 PM  
You need more gear to keep the engine in it's power band. Too tall of a gear does kill power may keep wheels from spinning but will kill your speed down the straight.
It does requier a very good foot and that special feel when tires are abount to break loose. May need to learn to back pedal to slow tire speed down to car speed.

racerwilson
Dirt Freak

Total posts: 357
posted January 01, 2003 09:59 AM  
Yes you do need mose gear. Just ask any of the top Late model guys. Slick track slower speeds lower rpm. More gear will keep the engine in it's power band and have faster straight speeds. Too tall a gear will kill the horse power and kill your straight speed. Your power band will kick in too late and launch you into the corner and you get loose getting in. Now you don't have the power or control to recover. More gear does need an educated foot.

emjay
Dirt Roller

Total posts: 5
posted January 01, 2003 02:14 PM  
Obviously, you have been talking to the guys that run in the back. All WINNERS control power to the drive wheels to hook up. Why do you think traction control was invented?
Too spin the wheels harder!!!!!!!!!

racerwilson
Dirt Freak

Total posts: 357
posted January 01, 2003 08:25 PM  
Just ask Scott Bloomquist, Donnie Moran, Chub Frank,Dale Frances and they will all tell you more gear when track slows down and gets slick. Traction control is for those pedal mashing drivers that can not control the power they have. OK it will make a bad driver more consistant maybe.

NRG77
Dirt Full Roller

Total posts: 31
posted January 14, 2003 03:07 AM  
Well I'm new to late models but I just can't get the theory of killing horsepower through my head. It just doesn't make sense to me. I've watched a lot of late model races and no matter how slick the track is there is always a point on the track where the tires are hooked up and the pedal is all the way to the floor. I'm the chassis man on our car and I like the challenge of making the car hook up in tough conditions. The other half of it is the driver's responsibility. If he can soft pedal it off the corner without us doing anything to the motor then even if it's only for the last third of the straight he will have all the hp we have. I hadn't thought about the gear change but what you guys are saying makes perfect sense. If the lap times go down then you need more gear, that's just a fact. Keeping the engine in the power band is everything. Unless you have tons of hp to spare, and since not all of us are millionaires we can use all the hp we can afford. In my opinion de-tuning the motor is just an excuse for a bad driver or bad chassis set-up. Just my o2.

charlie_two
Dirt Full Roller

Total posts: 53
posted January 17, 2003 08:42 PM  
i always go to more gear. to much gear will push your car into the corner to fast. taking gear away is one of the worst things u can do.

charlie_two
Dirt Full Roller

Total posts: 53
posted January 18, 2003 07:01 AM  
i mean not enough gear will push the car to fast into the corner and and more gear will get the car slowed downed when u let off the gas

racerwilson
Dirt Freak

Total posts: 357
posted January 21, 2003 02:34 PM  
wHEN IN DOUGHT ADD MORE GEAR.

Darcy
Dirt Full Roller

Total posts: 71
posted January 21, 2003 05:25 PM  
the best thing that i have learnt is to control the brain to the pedal once you have masted that your on your way and dont go up in gear stay where you are or go down for a dry slick track like racer111 said your are going slower so can get out of the turn

regard darcy

Daleepo
Dirt Roller

Total posts: 17
posted February 07, 2003 03:12 AM  
I'm new to driving, however my take on the problem has more to do with logic than anything else. If you're going to spend the money for the horsepower why on earth would you want to find the biggest hammer in your toolbox and bash that horsepower in the head for the feature, seems to me that if you're going to find a solution to a "hook up" problem, you wouldn't want to drop the performance of the single most important speed generating component (your motor) I would think that you would want to keep your 600 horses running pure. It seems to me to be a traction problem not a power problem. I have to go with the crowd saying keep it revving and find some forward and right side bite, maybe even adjust your line a pinch.

richmas
Dirt Roller

Total posts: 7
posted February 13, 2003 03:31 PM  
one of the main changes I see is in tire
grooving. most don't use grooves at all
for dry-slick, they use sipes instead.

seems to me this ought to be a tire
management discussion more than anything
else.

devil wrench
Dirt Maniac

Total posts: 178
posted March 09, 2003 09:32 AM  
Richmas is gettin there...the more biting edges a tire has, the better it will adhere to a slick track. How hard are your tires?

In the handling areas, we need to know more about what the specific problems are of your car.

Everyone has there theories about gear on slick tracks, and it all comes down to driver preference. You can add gear to utilize compression braking going into the corner, or you can take gear out to soften the engine coming out of the corner, it all depends on the traits of the driver's right vs. left foot.

green bandit
Dirt Newbie

Total posts: 3
posted March 30, 2003 08:53 PM  
You can play with the gear some but closing your stager in the rear will help. A stiffer left rear spring. Get more weitght on the rear but not past the axle. Soak your tires down to the minamum hardness.


racerwilson
Dirt Freak

Total posts: 357
posted April 26, 2003 02:20 PM  
Need to have the whole package. Tires are a fine tune if you run a track tire. The less you are alowed to do to a car is when everything needs even more attection. every little detail.

GRT88d
Dirt Roller

Total posts: 6
posted May 13, 2003 05:24 PM  
you guys are getting there but it's just not one thing it's alot factors rolled into one. when the track dries out or rubbers up you need to play with tire compunds depending on how many laps your going to run. play with air pressures/ stagger. and figure out what you car is doing as far as tight or loose and where is it tight or loose at. play with the panhard bar/J-bar rasing it to get more body roll into the car and moving your four links up or down. but the main thing is the driver has to slow down to be fast on a hard dry-slick track because nine out of ten times when a track gets hard it becomes one laned making the driver have to really pick and choose where he or she needs or whats to go and understanding that it might take many laps to by a slower car.

J. Clark

Mark Dowdy Racing 88d

The Rascal
Dirt Roller

Total posts: 21
posted June 01, 2003 02:27 PM  
Most higher gear changes put the motor “into” the torque curve rather than the “spike” where the motor’s really coming onto max VE…and where max acceleration is…getting above that area and more to the transition from torque to horsepower reduces the torque “shock” to the tires…
Most chassis adjustments to make a high power car hook on slick tracks are really making the chassis absorb torque…so it’s much easier to soften a little power than chase chassis settings…Rascal

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