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Author Topic:   Loose off! Pure stock
birdracing7092
Dirt Newbie

Total posts: 3
posted July 16, 2004 08:32 PM  
Hey Guys, I have a Chevy Nova Pure stock. Having trouble getting bite off under acceleration. My setup 1100lf/1100rf leafs in the rear.I bought leafs from chassis builder, not sure of spring rate. Afco shocks 1022 across fronts with 1034 in lr and 1032 rr. 2inch stagger in front 2 1/4 in rear. We race on a med to high bank track that gets slick sometimes glassy. My right rear tire pressure grows 3 1/2 pounds and lr grows only 1 1/2 pounds. This past weekend on a slick track in feature, car was great until 1/2 way point then we started to lose bite. Thinking we need to add ballast but where? The chassis guy suggests lowering lf to 1000. Leave stagger alone because car is great in and in center. Any other feedback would be appreciated.

[This message has been edited by birdracing7092 (edited July 16, 2004).]

[This message has been edited by birdracing7092 (edited July 16, 2004).]

ccb
Dirt Roller

Total posts: 14
posted July 16, 2004 10:25 PM  
Hello Bird racing.been watching you for a while now.need to know what your rear springs are.you should know this.you should also have your own notebook and by now have an idea what direction to adjust.you put too much faith in a friend that his own car don't handle the majority of the time.Good intentions but maybe he is not helping you as much as it seems.Are you still running the tire soft so the roll under.If so up the pressures all 5 lbs.That way you could run the right rear 4lbs softer and not change the stagger all that much and the tire won't be affected somewhat till the point you are speaking of.The stagger don't change all that much on those tires but the pressure affect how the tire bites.It will work.If you think the car feels good and it really don't look all that bad try a subtle adjustment.You adjust never mind what everyone else is doing do your own thing and it will get better.Small steps in the right direction yeild huge dividends!ccb

birdracing7092
Dirt Newbie

Total posts: 3
posted July 17, 2004 06:13 AM  
quote:
Originally posted by ccb:
Hello Bird racing.been watching you for a while now.need to know what your rear springs are.you should know this.you should also have your own notebook and by now have an idea what direction to adjust.you put too much faith in a friend that his own car don't handle the majority of the time.Good intentions but maybe he is not helping you as much as it seems.Are you still running the tire soft so the roll under.If so up the pressures all 5 lbs.That way you could run the right rear 4lbs softer and not change the stagger all that much and the tire won't be affected somewhat till the point you are speaking of.The stagger don't change all that much on those tires but the pressure affect how the tire bites.It will work.If you think the car feels good and it really don't look all that bad try a subtle adjustment.You adjust never mind what everyone else is doing do your own thing and it will get better.Small steps in the right direction yeild huge dividends!ccb

Hey CCB Yes we upped air pressures as you suggested and car became even more skaty. No tire roll at all. I did do exactly what you just wrote. I do have my own notebook and I am making my own changes. We found some chassis issues this week such as lr spring bind and corrected them. I am at a point that I don't want to go in the wrong direction but if I do I want some back up to change it. I narrowed it down to front spring. I am still learning about cross weight and wedge thats why I like read these forums and there suggestions. The car is almost there. I am going to make the above changes and this should tell me a lot, afterall the ORIGINAL chassis builder should know best! Lets hope he does. I will find out about the rear springs. That is a black area for me and you are right I should know the numbers. Thanks for the response and thanks for watching us. RTB

[This message has been edited by birdracing7092 (edited July 17, 2004).]

racer17j
Dirt Forum Champ
Total posts: 5390
posted July 17, 2004 02:16 PM  
quote:
Originally posted by racer17j:
i would also change that lf spring and then go with less stagger in the rear when the track dries out stagger in the front gets you in stagger in the rear gets you out. i'd drop to 1 or even up on the rear and try that works for me anyway. that will put more weight on your lr and even out the building of pressure on the rr

Thanks racer17j for the input. With the track tire rule I cant close stagger down to 1 inch. The lowest I can get is 1 3/4 with the sizes were allowed to run. Last time I ran with no stagger in the rear the car didn't handle well. But with this new spring combination it may just work. I will let you know how it handled.

[This message has been edited by birdracing7092 (edited July 17, 2004).]

ccb
Dirt Roller

Total posts: 14
posted July 17, 2004 08:35 PM  
Hello Bird.I heard today that you went to the original chassis man.That is a good thing.The car went well with the previous driver so it should work the way it was.I think the second guy your friend, mr.roush has good intentions but has you doing things and getting you confused.My opinion is he's confused .I don't think i would listen to a guy that his car goes backwards all the time.Listen to Joe he will tell you what works.Keep perfect notes.Then you know what direction you are going in.This isn't rocket science when you keep notes it is relatively simple to make the car handle.There are some things that just have to be a certain way and it will work.Then "fine tune and driveing style plays a factor.More air pressure and it got worse.that tells me the suspension wasn't right at all.cause that should have made it better.you can't run radials flat.they don't work under inflated.If you can't change stagger for the feature either offset the right rear another in.or tuck in the left rear,That should help some for the featYou could add 5 lbs to the left rear.That would take the cushy out of the tire and make it stand up in the corner even though it doesn't change circumference it won'troll under and will help.Let us know how you do.Good luck.Someone has to start beating the winner over there.It's handling he is winning with pure handling.Later,ccb

19J
Dirt Freak

Total posts: 370
posted July 17, 2004 10:33 PM  
I dont know your rules but i do know you can mess with stagger no matter what they say. You have certain tire sizes ok thats cool. But measure the roll out on all of them and put the 2 closest. If that is what you did to get 1 3/4. Some people may not agree with this but ive heard a lot of good guys talk about it under spec tire rules. Take and put about 50 lbs in it and set it in the sun. It will expand. Downside. It can make the tire a lil bit harder. It should make the tire get bigger tho.

    

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