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Author Topic:   Can`t get off the corner
J 46
Dirt Full Roller

Total posts: 28
posted July 24, 2005 04:51 PM  
We have a 04 mod with impala front sub , the car is great going in and through the corner can`t get off ? It is A full 4bar car lf750 rf850 lr200 rr150 , we use a pullbar with a progressive spring 90/10 shock on top. All are shock travel is good on all corners . I think we are haveing a problem with the bar angles , it seems to be getting up on the bars to fast like when he gets on the gas in the center of the corner and all it does is spin comming off ,no forward bite ? Sure would like some ideas on how to fix this problem ??? He can push other cars through the corners but can`t get off the corner !!!We run on a large half mile with tight corners . Any input would be great , we are stuped at this point ??

J 46
Dirt Full Roller

Total posts: 28
posted July 28, 2005 06:06 PM  
Thanks guys for all the help , i`m new on here and heard how great this forum was for help ????????


J 46

washeduptoo
Dirt Maniac

Total posts: 155
posted July 28, 2005 07:15 PM  
I wish I knew enough to help you. I know there is alot of information in this forum. If you would do a search on 4-link, you will probably get the information you need, such as bar angles, lr bite j-bar rake, etc. From what I have read on here, top lr bar angle should be about 15 uphill and lower level or slightly neg. Please do a search and you will find the information you need. Hope this helps.

J 46
Dirt Full Roller

Total posts: 28
posted July 28, 2005 08:22 PM  
Thanks washedupto i will give it a try .


J 46

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 29, 2005 05:41 AM  
If you need more traction put more bar angle in it, LR upper bar in the 20s is not uncommon. Our baseline setup is 20 top, 0-5 bottom.

Kromulous
Dirt Forum Champ
Total posts: 796
posted July 29, 2005 08:23 AM  
I think i would try, lowering your front springs by 100 on each side. Then consider raising the rear roll center up maybe a 1" or .5".

When a 4 bar car is up on the LR, it wants to compress the RF spring. So if you soften it it will allow the LR to stay up on the bars longer. Softening the front springs and raising the rear RC will, i think bring you a better balance.

Is the car coming off the bars to quickly, or is the LR bottoming out and loosing traction that way?

Another idea, if it isnt bottoming out, would be to bring your pull bar to the left a little, maybe 1" adjustments at a time.

Just some ideas.

Krom.

[This message has been edited by Kromulous (edited July 29, 2005).]

dirtmod0
Dirt Maniac

Total posts: 143
posted July 29, 2005 09:24 AM  
More gear??? what u running now?

J 46
Dirt Full Roller

Total posts: 28
posted July 29, 2005 10:11 AM  
Thanks for all your ideas to try guys , we fround that when we went from IMCA tires to hoosiers they were alot bigger and we moved the rear end back and forget to check the shock travel on the pull bar , we found that the shock we had was to short and wouldn`t let the rear end work . We are going to a 486 gear now the car can get off the corner better . We raced wednesday night the car was alot better found out we didn`t have enoudh gear ,car was good but not fast enough off the corner . This is are first year running UMP and alot of learning curves ,but we like it really well.


J 46

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