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Author Topic:   Fighting a push
FS93
Dirt Roller

Total posts: 5
posted June 30, 2001 11:35 PM UIN: 3107810
My brother in law is in his first year driving a mod, and i am trying to help him with his setups. We really havent touched the suspension too much as he is still really trying to learn how to drive and the car was setup by the previous owner for the track that we run. The car is a 3bar rear car, and is a medium banked 3/8 oval. The problem we are having is a push in mid turn. If he lifts the slightest bit it wants to push. If he can stay on the throttle through the turn it does great, but in traffic if he has to lift it pushes bad. The track usually stays tacky throughout the night also. Any suggestions on what to do to help this situation? Thanks

Brandon

dirttrackracer
Dirt Full Roller

Total posts: 26
posted July 01, 2001 08:58 AM
Raise panhard bar a little bit on both ends, if entry is good.Dont change anything else and try that,it doesnt take much of a change to make a difference on the panhard bar.

millerlt3
Dirt Roller

Total posts: 22
posted July 01, 2001 11:22 AM
dirttrackracer is right, raise the panhard bar or j-bar and it will help adjust the push you have in the middle.

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HOTWIRE
Dirt Roller

Total posts: 18
posted July 01, 2001 02:00 PM
Hello, I am the bro in law... we will try that. I noticed that the rr sidewall lettering was wore off a lot.. is this normal or is the tire roll over too much? should we go with more air pressure or leave it as is. I am not used to that much banking. We had about 12 pounds in the rr.

HOTWIRE
Dirt Roller

Total posts: 18
posted July 01, 2001 02:08 PM
also the rr shock is bottoming out... it is a 94. should I increase the spring rate or change the shock to a stiffer one and if so what would you recommend? I would like to hear you guys reccomended setups for this track so here goes: 3/8 mile decent banking usually goes dry slick towards the end( so we are told). car is a 3 bar.... camaro lower a arms ...4" offsets all the way around.... tell me a complete setup from stagger to shocks fellas. Most of our problem is from me not knowing what the **** I am doing , but it would be nice to know a good baseline setup to start with. thanks in advance.And by the way, jammer this board is great . I have learned a lot just reading the other stuff that is posted so thanks a lot.......

millerlt3
Dirt Roller

Total posts: 22
posted July 01, 2001 05:54 PM
First check to see if the RR shock is even any good to start with because 9 out of 10 times if you bottom a shock out like that its probably junk. Also check its mount position which at proper ride hieght should be at half of its total stroke travel. As far as putting heavier shocks on the rear it depends on what rear weight percentage you have, they say from 52 to 54 percent rear use 94's and from 55 to 58 percent to use 95's. As far as a basic setup, I run 3/8 with a med. bank and fast sweeping corners and I run ride hieghts at- LF=4 3/4" RF=5 1/4" LR=5 1/2" RR=5 3/4". Spring rates- LF=650, RF=750, LR=200, RR=200. Shocks- LR=75, RF=76, LR=94, RR=94, and when it dry slicks I change the RF to a 76-3. Front end- Caster(power steer) LF +2 1/2 degrees, RF +5 degrees. Camber- LF +1 degree, RF -3 degrees. Toed out 1/8". I run 54.1% left side, 53.5% rear, and 49.5% cross weight. Wheel offsets- LF LR RR 3" offset and An 2" offset on the RF, On American Racers with tire pressure of LF=12psi, RF=14psi, LR=9psi, RR=12psi beadlocked. Stagger- when its wet I try to run at least 1 3/4", but if its going to dry slick around 1/2". Hope this helps.

HOTWIRE
Dirt Roller

Total posts: 18
posted July 01, 2001 06:52 PM
thanks. I am getting a set of scales so I dont know what the percentages are yet. I will try this setup and see how it works.

bbracer17
Dirt Maniac

Total posts: 168
posted July 01, 2001 10:41 PM
Just like the other guys said raise the panhard bar on both ends. This will stop it from rolling over as much. Maybe your shock won't bottom out then.

dirttrackracer
Dirt Full Roller

Total posts: 26
posted July 03, 2001 04:59 PM
HOTWIRE,just try the panhard bar for now with no other changes and go from there.If you make alot of changes you will never learn what each change made and will guess at a problem instead of knowing what to do.The shock may be bad from bottoming so check it, but raising panhard bar will reduce right rear travel.How much travel are you getting anyway?Around three to three and a half is about right usually.Keep us posted next time you run.

HOTWIRE
Dirt Roller

Total posts: 18
posted July 03, 2001 09:29 PM
ya , you are right . We will only change the panhard bar for now. The shock was brand new but I will check it out. I will measure the rr travel next time I am out.

millerlt3
Dirt Roller

Total posts: 22
posted July 06, 2001 08:43 PM
Hotwire, my setup works for me, thats not to say it will or won't work for you. the other guys are right, for now just try to fix one problem at a time but definetly watch for that shock bottoming out because that also could be the cause of your push problem.

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