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Author Topic:   Leaf Car Dry Slick?
789racin
Dirt Roller

Total posts: 7
posted October 12, 2005 08:46 PM  
i race a nova on a 1/3 mile, car is good in the heavy mud and tack ok in the dry slick but not the best i need more traction my front springs are lf950 rf1050 lr200 rr175 53%cross 52.7 rear, 6 degree pinion angle, was thinking about putting more pinion angle in. would softer rear springs help me or stiffer springs. rearend is even up right now. shocks are stock style bilsteins car weighs 2950.

sc1 racing
Dirt Freak

Total posts: 419
posted October 13, 2005 07:25 AM  
id run around 10 degrees on the pinion and move some weight over the right rear, and pull the left rear tire in. i know people are going to say wont that" " and " " but thats what i do and our track is ussaly dry slick in the features. and it works perfect.

wheel packer
Dirt Roller

Total posts: 11
posted October 13, 2005 08:06 AM  
Actually your rear springs sound about right, but what you have not told us is what kind of shocks are on the rear, how much LR wheel weight, and what kind of stagger. A common myth is to put more pinion angle= more foward bite. That is not the case when you get so far. 10* is plenty. About 200# of LR is plenty as well. YOu get much more than that and the car starts to get major throttle push off the corners. Stagger needs to be no more than 3/4". and soften the RR shock to around a 92 from a 94 or 95 when it is tacky. Something else that will help is pull the LR leaf down a hole or two before the feature. All of this is for super black-slick tracks, it dont matter if it is as flat as a pancake, or banked like Eldora.
Remember, every car is fast when the track is tacky if you have a good motor.

Magic82
Dirt Full Roller

Total posts: 34
posted October 13, 2005 09:12 AM  
Wheel Packer

Do you mean lower the front of the LR leaf down? How does that affect the car? Not disagreeing with you, just curious.

789racin
Dirt Roller

Total posts: 7
posted October 13, 2005 12:57 PM  
my shocks, we have to run stock mounting shocks there just the stock bilstein street shocks out of speedway magazine. i have 130 of bite in the car for dry slick thats lr-rr difference and i usually run 1/2 of stagger what do you recommend for rearend lead should i move the rr forward when it gets black

Leaf
Dirt Full Roller

Total posts: 40
posted October 13, 2005 05:19 PM  
I run a nova also.. and have been accross the board on set ups..

100 lr bite to 240

all my lead is over the axle and as high as my speaker deck.

I am at 7 degrees of pinion angle been to 10 didnt seem to matter at all.

I run on imca tires and they are hard but I have never felt I had a driveable car on slick yet. Though I can hang with people just not race them really..

Last race I raced at 3500 lbs, 59 rear,200 lr weight.. I got some good roll onto the rr but still felt I lacked traction, I could break my tires loose anytime any place on the track.
coming off the bottom over the slickest area it would just slide the rear over it to the right, I could hit that same area coming down from the topside and get going well right thru it, to me it meant I had ok forward bite but lacked side bite?

last race I had these shocks.

3060 2060
6010 4010

I moved the rr in 2 inches also. tires were half night old too!!

I have lowered my rear roll center 1.5 inches and that didnt seem to change anything either.

I am sort of wondering if the splayed leaf mounting in a nova versus a camaro has a negative effect??

Or should I just bite the bullet and soften both rears and buy new ones as often as needed?? Im running some custom made 9.25 arch ones now that rate 240 lr and 210 rr on my rater.

I have had it hooked up pulling the lf on tacky and even with just a little moisture, but my lr leaf only lasted 2-3 nights with that set up..

any ideas will be accepted, Im at loss of what else to try other than softer rears on both sides, which I havent really done yet at all.


wheel packer
Dirt Roller

Total posts: 11
posted October 18, 2005 05:57 AM  
What i mean on lowering the leaf spring is, on your shackeles, lower the back of your leaf a hole or two when the track gets slick. I dont think 130# of LR wheel weight is enough. When leading the RE, you are getting into a lot of different factors when setting the car up. My opinion is to have the wheel base square. Leaving as many things as basic as possible will help with adjustments. adding or subtracting weight, and changing a couple of shocks is a lot more simple, and will do as much change to the car than changing wheel base, pinion angle, weight, air pressure, ect, ect.

sc1 racing
Dirt Freak

Total posts: 419
posted October 18, 2005 06:56 AM  
when our tight 1/4 mile hair pin track turned slick i took every thing off the l/r exept for 60 lbs, and put on the right...
i think yall need to try things out instead of reading what the majority go with. no 2 cars will ever be set up exactly the same so. their junk will not work on your car. slick track====r/r weight

789racin
Dirt Roller

Total posts: 7
posted October 18, 2005 08:37 PM  
when i come in from the feature on a slick track my rr is hotter than the lr so does that mean the rr is spinning or doing all the work

sc1 racing
Dirt Freak

Total posts: 419
posted October 18, 2005 10:09 PM  
if your r/r is spinning so is your l/r. way to many factors in tire temp rather than weight placement..#1 cause of tire temp is driving style..another major is air pressure. right rear will always be warmer than left due to it being an outside tire.

only thing i can say is try it and you be the judge. ive fought ill handling cars spent hours and thousands trying to do what others did. and finaly said f it..if it works fine if not ill put it in the wall..some worked and i did some wall banging but if you ever see me post anything you better bet myself and the other cars i work on run it and it works..you can also take your wedge down to 1 in or even across the car.

4racer19
Dirt Roller

Total posts: 18
posted October 20, 2005 03:16 PM  
Just curious, what is the relationship on your rear spring mounts in height between the fron mount and the rear? Check out the tech section on AFCO's site. Lots of good info there on leaf spring setup.

    

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