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Author Topic:   Dirtworks front grip
spock
Dirt Newbie

Total posts: 4
posted December 08, 2005 04:39 PM  
Anyone have any ideas on how to get more front traction on a DW8 chassis? My car is always trying to scoot the nose and if i free the car enough to turn, then I don't have enough rear grip to get off the corner. The DW11 have some different front end parts. Will those fit a DW8? Will they help any?

5tbone
Dirt Full Roller

Total posts: 66
posted December 08, 2005 07:06 PM  
we need more info on your setup. Some one on here has a cure for your problem I guarentee...but we need springs, suspension type, pull bar type, j-bar or short bar we also need scale weights and %'s

But with the info you gave it sounds like a scaling issue loosen the car and add rear%

the DW-11 parts probably won't fit your DW-8 but I bet they wouldn't help anyway. Get us the #'s so we can fix it.

[This message has been edited by 5tbone (edited December 08, 2005).]

dirtbuster
Dirt Forum Champ
Total posts: 2024
posted December 08, 2005 07:14 PM  
I dont think its the parts of the DW11 that would help yoru car.. its more in the moutning points of the a frames. They changed around the upper a-frames and they look closer to the hughes cars now. They would prob update your 8 if you wanted them too.

spock
Dirt Newbie

Total posts: 4
posted December 08, 2005 08:11 PM  
Car is a 4 bar lr rr. 850lf 750rf 225 lr 175rr. 1050 pull bar. 19 j bar. 58% rear.

5tbone
Dirt Full Roller

Total posts: 66
posted December 08, 2005 08:50 PM  
is the car pushing on entry or exit. If it is both. if you fix the in the out might fix itself? If you soften the LF it will loosen you on entry so you might swap the springs or drop the LF to a 750 or even a 650. If it were my car I would also bring up the RR to a 200, scale in 30 to 40lbs LR bite, bolt on some lead to get my rear% up to about 60 and put my foot to the floor. Some thing else to think about is the angle of your j-bar( mine is 8 inches up from bottom of LR frame rail 2nd hole pinion) i had a 4 wheel skid when I couldn' get side bite and I kept trying to fix a push and pullbar angle should be like 18 to 22*'s I prefer the biscuit bar.
My 2 cents. anyone else.

Good Luck

joeltjen
Dirt Maniac

Total posts: 186
posted December 08, 2005 11:02 PM  
if you're pushing going in, (feels like the car is bound up, not getting on the right front??) move your front roll center to the left 3 or 4 inches and STIFFEN the r/f to 850#. by softening the r/f your de-wedgeing the car to get it to turn but your r/f is probably "diving" in so far the weight wont transfer back to the rear for bite off the corner.

nvracer
Dirt Maniac

Total posts: 129
posted December 09, 2005 06:51 AM  
If it is tight on entry I would swap the front springs. The stiffer RF spring will loosen up entry.

dogwalker
Dirt Full Roller

Total posts: 66
posted December 09, 2005 08:58 AM  
If your front ride height is too high, it will cause this problem because the roll center will be way off. If it's not at the recommended height, lower it back. I would get the front end part fixed before the rest.

dirtbuster
Dirt Forum Champ
Total posts: 2024
posted December 09, 2005 09:12 AM  
I would soften both fronts, down to a pair of 650 then adjust up or down from there but try to keep within 50# split or max of 100#. I know some guys down to 600 on the RF (700 LF) of there 8 with 4/4 rear setup. And the Your rear springs are prob ok. If your springs are too stiff they donít allow the car to move as freely and that can make it feel bound up and not let the suspension work. If its super dry you donít want too stiff of springs otherwise you wont get as much suspension travel to cushion the loading of the tires and you will shear the contact patch of the tire making the car skate. Same in the rear if you go too stiff in the rear you will lose sidebite and grip because you shock the tires too much in loading. Oppostie is true if its tacky you need a stiffer spring because the tire is has more grip and can take the loading more aggressively.

Also with 4 link car 58% in most cases should be more than enough rear. Sometimes too much rear(especially with 4bar) will loosen you in because the rear of the car is heavier then you can get so much rear traction it just overpowers the front end and screws up your exit. You try to tighten the car in by adind lead for sidebite and that makes the car worse and even tighter on exit so you loosen it on exit which then loses traction etc etc. My point is donít try fixing the whole corner without looking at what the car does through the whole corner.

spock
Dirt Newbie

Total posts: 4
posted December 11, 2005 10:22 AM  
what's the easiest way to change the roll center on a DW8? whats the best way to change the roll center on a DW8?

1more
Dirt Newbie

Total posts: 1
posted December 11, 2005 08:55 PM  
If it isn't a pushing problem and ur just not getting traction with the front tires. When we ran one of those the only way to fix the problem was to change front end settings make her look like a road grader and it will drive 100% better

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