joker14
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The more I see the less I have to believe.
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Post by joker14 on Oct 12, 2013 8:25:14 GMT -5
You were on the right track earlier with the rear tires being doughnuts and hurting your grip in the front. I could write pages on making grip in racecars but no time. Straighten the back tires up, shorter wider bald tires. Must remove grip from the rear especially side bite. This will definitely free the back up abd help the front. More spring in the back will do it too. More rear bar will keep weight from moving to the back and keep it on the front tires. About 3 degrees of negative camber in both fronts and about .5 inches toe out.
Sent from my SPH-L720 using proboards
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joker14
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Post by joker14 on Oct 12, 2013 8:27:20 GMT -5
Btw I would not toe the rear tires out. Makes rear grip and your getting to not to and the more you toe it the front and rear tires the more Hp you lose. Unlike derby cars there is such thing as too much.
Sent from my SPH-L720 using proboards
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Post by teamdirtsi1 on Oct 12, 2013 16:11:14 GMT -5
Heres what i do and i use the same car for doin 8's as i do for enduro's. I toe out the front tires put some dounts on the rear. Completely remove the rear brakes and plug off the front passenger side caliper. Thus caseing you to have one brake total on the car. Take alittle getting use to especialy on the right hand turns. Left hander youll just slide around. Once you get use to the way it handle you can make it slide on the right handers too. Ive won with this set up and it works real good for me
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Post by gray44x on Oct 13, 2013 21:51:44 GMT -5
Idk what your rules say but flip that some itch around and run it in reverese
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T-Brell
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Post by T-Brell on Oct 13, 2013 23:06:22 GMT -5
Thanks for the input, but here's my review on what I had done to the rear. At first I was leery, as when I hot lapped in the driveway it was squirrely as shoot and dog tracked bad in both directions depending on which tire had grip. But, once I got used to it out on the track, it REALLY helped. I think it did slow me down in the straights slightly, but it more than made up for it in the corners. Before, I would have to almost come to a complete stop and pop the clutch in and out to get it to corner, now I can fly into the corner swing the wheel and stay in it and the thing sling shots around the corner.
I do not think this would be a good set up for a triple figure 8 or a figure 8 on an oval track, but for the small tracks with the barrel-style figure 8, it works like a charm. I also have less work to do with pulling the e-brake with this set up. There's video of me running on youtube, it's Russellville, MO figure 8 10-12-13
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kpb
Future Icon
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Post by kpb on Oct 21, 2013 10:52:18 GMT -5
You were on the right track earlier with the rear tires being doughnuts and hurting your grip in the front. I could write pages on making grip in racecars but no time. Straighten the back tires up, shorter wider bald tires. Must remove grip from the rear especially side bite. This will definitely free the back up abd help the front. More spring in the back will do it too. More rear bar will keep weight from moving to the back and keep it on the front tires. About 3 degrees of negative camber in both fronts and about .5 inches toe out. Sent from my SPH-L720 using proboards When you say more spring in the back will do it too....do you mean that you want more spring in the back? I ran a figure 8 and the rear suspension was welded solid and broke part way through the first lap so the majority of my race was ran with regular suspension. Just curious if people ever weld the rear end suspension solid or if it's better to run it stock.
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joker14
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Post by joker14 on Oct 21, 2013 11:05:31 GMT -5
i would put more spring it in, i did not say an infinite amount of spring. must roll and transfer and too much spring will not do that. More spring will keep more weight on the front tires in which those cars need to power and steer, with them its critical. Pulling an e- brake is just a crutch or an easy fix. brakes are for getting to the track.
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T-Brell
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Post by T-Brell on Oct 21, 2013 12:46:13 GMT -5
By more spring, he means stiffer springs, if that's what you're not getting. But yeah, solid rear suspension wouldn't be good, either, the rear will bounce too much and cause it to lose the center of gravity really bad and make it hard to handle.
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joker14
Feature Winner
The more I see the less I have to believe.
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Post by joker14 on Oct 22, 2013 9:26:20 GMT -5
how do you loose center of gravity? magic?
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T-Brell
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Post by T-Brell on Oct 22, 2013 12:21:22 GMT -5
Well, I guess you can't lose your center of gravity. The weight won't shift though and it will push really bad...
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Post by gyster on Jul 14, 2016 11:29:43 GMT -5
I have a 1998 Chevy Cavalier, is it worth using the ebrake to turn or will it turn sharp enough? Racing on dirt.
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Post by knightynight on Jul 14, 2016 18:15:07 GMT -5
Yes use the e brake just break the ratchet lock out of the handle or weld the button down.You can run without one but if it rains or the track is wet down you will need it.
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Post by icechip on Mar 28, 2017 23:03:13 GMT -5
Have read the posts made here and appreciate the suggestions. I 2016 ran a 2002 Dodge Stratus 4 dr with the 4 cylinder in the modified class autocross / bump and run class. We could race in either direction depending on the promoters decision that night. Having read and talking to others I run the front with a little extra toe out and a slight negative camber if I can.
In the rear I run doughnuts and a bit more negative camber than the front. I tried some toe out but might have gone too far as the car would not roll easily. Went back to a more neutral toe setting and seemed just as happy.
I have rigged up two E-brake handles, one for each rear wheel. Depending on the direction we race I pull the handle for the inside wheel to help it turn. I found by pulling it well before the corner I no longer need to use the regular brakes, and with the outside wheel still rolling it will help dig in instead of sliding though the corner and adding more drag.
I think it works well enough as the corners seem to be where I make up some time on the cars with the V6's. Works best on grippy tracks, really doesn't help that much if it's really greasy.
With a 4 dr and 4 cyl i think it's better to have as little drag at the rear end as possible.
Chip
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