Critique my scale #'s please

[jsf74]

Put my car on the scales today and Would like to get some opinions.

First set is with me NOT in the ca

Lf 457. Rf 519
Lr 712. Rr 538

Front 976 43.8
Rear 1250 56.1
Left. 1169 52.5
Right 1057 47.4
Cross 1231 55.3
Total 2226

Me in the car

Lf 523. Rf. 527
Lr 836. Rr 586
Cross 1360. 55%
rear. 1420. 57.4
Front 1050. 42.5
Left 1360. 55%
right. 1113. 45%
total. 2472

[jsf74]

Car is a 2005 impressive metric
4 bar lr. Z link rr
Lr eliminator in back shock in front
Rr spring on axle shock in front
Lf 600. Rf 650
Lr 225. Rr 200
3/8 mile high bank dry slick 90%

[kwagner]

I think thats a lot of LR bite which makes for a lot of cross which will tighten up the car.

[jsf74]

The problem I've been fighting is a wicked tight condition can you explain. I hit the gas and the car will NOT turn. We were a ton better last weekend but I think I'm still a mile off.

[cheaterleaddog]

Car is a 2005 impressive metric
4 bar lr. Z link rr
Lr eliminator in back shock in front
Rr spring on axle shock in front
Lf 600. Rf 650
Lr 225. Rr 200
3/8 mile high bank dry slick 90%

1st swap front springs and try it. 2nd soften rf 50#s and try it. 3rd soften right rear

[a1driver]

get your rear split down to about 80-100 which should lower cross. with what you have when you get on the gas it should be very tight

[jsf74]

When I went out last week for the heat race the car was 100% junk. Between the heat and the b main another racer helped me with some changes and the car was a million times better. As a matter of fact it's the fastest it's ever been with me driving it. When you say swap springs and then soften rear are u talking about in the shop while scaling or week to week at the track. Why is the car rotating nice when my lr bite is so high?

[oldtrackchamp4x]

I agree with a1driver. Only change bite before trying other things that were suggested. JMO

[jsf74]

What is the best way to adjust bite. Just jack screw or will spring changes affect this. Just lr and rf right?

[oldtrackchamp4x]

First set ride heights according to builder specs.On my car i put one turn in fronts to two turns in the back as this keeps my ride heights the same. In your case take turns out of RF and LR and put turns in LF and RR. Probably 2 turns out RF and 4 out ofLR. 2 turns in LF and 4 in RR will get you close, if to much go back the other way. If your ride heights change just go one turn in fronts and backs until you get bite where you want it. Springs will change bite so i would just try bite first then you will know if that change helped you or not. You can then try springs. JMO

[jsf74]

Should I adjust bite with me in the car or not. Seems like I need to have my weight in the seat to get accurate #'s.

[cavemod]

Too much lr weight and hence too much cross best thing i can say is set weights to manufactures spec w/o driver thenfind 200 lbs of weight in the seat of the car and record the numbers most cars are set up by manufacturer for a 200 lbs driver you weigh what 240?why is the rf weight heavier then lf??your numbers are why the car is tight probably pushes like a dump truck

[oldtrackchamp4x]

If it was me i would scale car to have , like a1driver said, 80-100lbs of bite with you out of car. You can climb in car after and see what bite goes to so you will have that number also. Plus you should also jot down all your percentages and other weights as well with you in and out of car. JMO

[jsf74]

will do. i am forced to race what i have this weekend but will make some scale changes for next sat. thanks everyone.

[cheaterleaddog]

When I went out last week for the heat race the car was 100% junk. Between the heat and the b main another racer helped me with some changes and the car was a million times better. As a matter of fact it's the fastest it's ever been with me driving it. When you say swap springs and then soften rear are u talking about in the shop while scaling or week to week at the track. Why is the car rotating nice when my lr bite is so high?

I pm'd you

[a1driver]

you dont have to scale it to make changes for this week. Do what was suggested earlier, take 2 turns out of rf and lr- put 2 turns in lf and rr

[jsf74]

K I'll adjust my weight jackers for the hot laps and see what happens.

[cavemod]

you dont have to scale it to make changes for this week. Do what was suggested earlier, take 2 turns out of rf and lr- put 2 turns in lf and rr

I can guarentee this will free up the car some .if its still tight take another turn out of rf and lr and another turn in lf and rr. your original numbers are horrible way too much wedge and that rf should be lighter then lf .I run about 49cross w 56 tail and only 40lbs of bite w/o me in the car and my cross goes down to 48.4 and wedge goes up to 75 lbs when i get in.

[jsf74]

Well it took all of about 10 minutes to adjust all corners 2 rounds. If I'm still tight should I change 1 more round or increase rr air pressure. Right now I'm at 10lbs. Adding pressure will load that tire and take some more bite and cross out right? I've seen some other fellow racers at around 13 or so.

[Dugger_17]

LF should be about 35-50 pounds heavier then the right front. Remember heavy spring gets the weight so by the right front starting out with the weight and having the bigger spring it gets all the weight. Id bet that if you check your RF tire temp when you come off its burning hot. When right front has the weight left rear loses bite. Common mistake it to try to adjust more drive into the car thinking thats the problem. I would say your bottom bars are way to low this causes the car to push like crazy I would move each bottom bar up one hole on the chassis side (guarantee it will free it up a bit). I would do exactly what most have said I would swap springs 650 in LF 600 RF or 600 / 600 is what I run I would put at least three rounds in the left front take three rounds out of the right front put 4 rounds in the right rear and take 4 rounds out of the left rear. Also if you have a RF shock with higher rebound will help. But any more than 100 lbs of left rear is just to much. I had the same problem your having and adjusted my self so far out I had to take it to the chassis builder to get back to where I needed to be...Just my thoughs.