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Author Topic:   push on dryslick
racer9
Member
posted July 26, 2003 07:02 PM
We ran at Malden speedway last night and the track started out dryslick and just got worse as the night went on. In the B-main our car pushed bad going into the corner and through the middle and the would hook up and be loose off. What adjustments can be made to help this problem.
Our starting numbers are:
camber: rf -3 lf 2
caster: rf 4 lf 3
toe -1/8"
Weight: 3220#
left 52.6%
rear 52%
cross 49%
Tires: 2045 take offs 3" offset all the way around Left pressure 11# Right 14#
By the B-main we were down to 8#L and 11# R

Any help would appriciated.
Thank you racers dad


rico 08
Member
posted July 27, 2003 08:57 AM
Everything looks pretty good number wise so i'd look at the right front brake,you could try installing a shutoff or if the rules require a working brake try waffling the brake pads on that corner with a grinder.


towmandan
Member
posted July 27, 2003 11:43 AM
Unless I missed it in your post I didnt see how much left rear you have, more left rear should loosen you up gettin in and tighten you up commin off.If you dont want to add weight you might play with stagger to gain left rear or try a wheel spacer or different offsets...Hope this helps...Towman


towmandan
Member
posted July 27, 2003 11:47 AM
One other thing I forgot thats very important running those pulloffs you better put a tape to everyone youve got cause the roll out can vary a bunch.....Towman


Eljojo
Member
posted July 27, 2003 06:59 PM
Those numbers look real close. How about some wheel weights? If you've got a very high rt front weight and a very low left rear, Towman has your solution. That split across the rear is very important.


racer9
Member
posted July 28, 2003 08:34 AM
Weights on the corners go like this.
lf 820
lr 886
rf732
rr782

My son has drove a kart for the last 6 years and it is hard for me to get him to set the car. He wants to drive through the corner and not get the rear end out any. We will work on that but I need to help him now.
Thanks for the help


allan
Member
posted July 28, 2003 09:38 AM
So if I need more caster split do I increase the right side or decrease the left. It seems as the right is about as far as it needs to go, or maybe not?
Thanks


Eljojo
Member
posted July 28, 2003 06:23 PM
Those numbers don't look bad at all...You're not running a small tire on the rf or the rr? I'd go to + 3/16 on the toe, but that doesn't look like it's causing a push. Go thru your suspension and check for binds.
One last thing??? You're not trying to run with really low ride heights? Metric cars WON'T work down low on the ride height-the camber and toe change will throw your static settings out to lunch.


allan
Member
posted July 29, 2003 08:10 AM
What about changing front spring weights?
What we have now goes like this.
lf 1000
rf 1100
lr 225
rr 200
Just an idea?
Thanks


Eljojo
Member
posted July 29, 2003 09:04 PM
Racer9...bud I just HATE when I get things to the point I think they're "right" and the dadgum thing won't work! I was thinking about your problem today and I think you may have "lead" in the right rear. Take the time to square up the rear end and see if maybe your rear axle is turning your car into the center of the track and causing your push. Set it on jackstands and do one of those 3/4/5 tricks with the differential housing vs the frame rails. Lemme know!


NYhick
Member
posted July 29, 2003 09:09 PM
I agree, check your rear end... You can also mess with your stagger.... I can make huge handling differences just by moving some tires around. My theory is get it close and adjust with the tires, they are the easiest thing by far to change and really do make a big difference...


racer9
Member
posted July 31, 2003 10:09 PM
Ok I may have found the problem. I had a bent moniter on my alignment machine. Got hunter to make repairs and the alignment numbers looked like this.

Camber unchanged
L 1.7 R 3.0

Caster Way off
L 2.9 R 2.5

Toe
-.23
I am hoping that getting the caster to where it needs to be it will help the problem.
If it doesn't rain will find out tomorrow night.

Thank for all the help.

justin
Member
posted August 01, 2003 02:19 AM
First thing I would check is to make sure nothing is binding up anywhere in the suspension, then chase it down with the advice these guys told ya. Try bumping up your cross a little like towman stated. Malden pretty much stays slick so you need some bite for getting off of the corners, and increasing your cross will help with that and loosen you goin in.

justin

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