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Author Topic:   can't get thru turns
rockyracen
Dirt Newbie

Total posts: 4
posted May 31, 2001 09:44 AM
car is a metric monte carlo.
set up as follows:
lf spring 1000, shock pro wb#763 split
rf spring 1200, shock pro wb#76
lr spring 300 , shock pro wb#94
rr spring 250 , shock pro wb#95
left side % is 55%
rear % is 55%
cross% is 52.5%
front tire stagger 2"
rear tire stagger 3"
no sway bar
corner wts.lf745, rf664, lr981, rr748
car has to wt. 3100 after race
ballast is all on left side , from drivers door bars to rear of car.
problem, is car will not slid going into turn and loose coming off. the track has long straight aways and very, very tight corners so you have to do the slid job thru the turns.what should my rear trailing arm angles be they are stock upper and lowers. the ride hts. are 10" at front rear 11" .

PEDDLER
Dirt Maniac

Total posts: 148
posted May 31, 2001 08:41 PM
With 233Lbs of left rear, I can see why the car won't turn. You are having to fight the car so much on entry that you are making the car loose on exit.
Try to reduce the amount of left rear ( on a same wt metric we run between 85 and 100 lbs left rear)even if you have to sacrafice some left side wt. Try to get the cross at around 49% as a starting spot and left side about 52%.You may also try moving the 250Lb spring to the left and putting a 225 or 200 on the rt rear.
The easier the car will enter the easier it is to control what the car will do on exit.

I hope this helps.
The Peddler

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted May 31, 2001 09:50 PM
PEDDLER, I'm don't understand where you get 233lbs. left rear weight. I assume this has something to do with cross weight. This is the difference of the lr - rr. What does this mean? Please explain, I'm trying to learn something here. Thanks Deed

dirtracer17
Dirt Full Roller

Total posts: 36
posted June 01, 2001 12:34 PM
If his #'s are correct, he is showing 233 lbs difference in left and right rear.981 compared to 748.

PEDDLER
Dirt Maniac

Total posts: 148
posted June 01, 2001 06:02 PM
On a stock chassis car, the more weight difference between the left and right, the more the car will push.
His example:
Left rear 981
-right rear 748
---
equals 233
That is the amount of left rear weight the car has. The more weight on this tire, the more corner entry push you will have. The more entry push you have, the harder you have to fight to make the car turn resulting in an overcorrecting thus making the car appear to be loose on exit.

Rocky and Dude, I hope this helps.
The Peddler

minimike57
Dirt Newbie

Total posts: 3
posted June 01, 2001 06:39 PM
Peddler...i agree with you on all your points so far. The other thing that I noticed from running that style of car is your ride heights. We ran ride heights in the 7-8 inch range thus creating lower roll center resulting in less body roll.Less body roll equals less pendulum equals less loose coming off.

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted June 01, 2001 07:01 PM
Thanks, PEDDLER. Your input is much appreciated. Deed

rockyracen
Dirt Newbie

Total posts: 4
posted June 02, 2001 06:20 PM
quote:
Originally posted by PEDDLER:
With 233Lbs of left rear, I can see why the car won't turn. You are having to fight the car so much on entry that you are making the car loose on exit.
Try to reduce the amount of left rear ( on a same wt metric we run between 85 and 100 lbs left rear)even if you have to sacrafice some left side wt. Try to get the cross at around 49% as a starting spot and left side about 52%.You may also try moving the 250Lb spring to the left and putting a 225 or 200 on the rt rear.
The easier the car will enter the easier it is to control what the car will do on exit.

I hope this helps.
The Peddler


rockyracen
Dirt Newbie

Total posts: 4
posted June 02, 2001 06:29 PM
Hello Peddler,
Thank you for the information.
this is also a new clay track.
quote:
Originally posted by PEDDLER:
With 233Lbs of left rear, I can see why the car won't turn. You are having to fight the car so much on entry that you are making the car loose on exit.
Try to reduce the amount of left rear ( on a same wt metric we run between 85 and 100 lbs left rear)even if you have to sacrafice some left side wt. Try to get the cross at around 49% as a starting spot and left side about 52%.You may also try moving the 250Lb spring to the left and putting a 225 or 200 on the rt rear.
The easier the car will enter the easier it is to control what the car will do on exit.

I hope this helps.
The Peddler


PEDDLER
Dirt Maniac

Total posts: 148
posted June 19, 2001 09:29 PM
Ever get the car fixed????????

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