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Author Topic:   tight n middle
dirtbuster
Dirt Forum Champ
Total posts: 2007
posted August 16, 2004 11:09 AM  
Ok heres the deal. 4 link car. Driver gets into corner fine rolls to the middle starts to pick up the gas and the car turns then gets tight and he has to lift. After watching his video it seems like he is getting back in the gas a little sooner than other cars, others are right about the apex he is a little before the apex. Problem is worse on the bottom than at the top of the track i am assuming because it is a tighter radius. To help him thru the middle would you have him A) try to roll furthur into the corner before hitting the throttle B) trail RR so the car will turn a little more under power. C)change some springs. Or any other ideas. Trying to help a freind out here, and get him some ideas of what to try.

mod70
unregistered Total posts: 2007
posted August 16, 2004 11:15 AM           send a private message to dirtbuster   Edit/Delete Message   Reply w/QuoteBBBBBB
Normaly I don't like to deal with the 4-link stuff, but it sounds like a rear steer issue to me, especially with the fact that it's magnified at the bottom. I think some static rear steer might help. I'd hate to change the springs too much, because it might mess with being able to pick the throttle up early. If you can get back in it before the rest, you should be able to beat them off. You might want to try it in 1/4" increments. GL

[This message has been edited by mod70 (edited August 16, 2004).]

norightturn
Dirt Maniac

Total posts: 159
posted August 17, 2004 03:52 PM  
Drive the car in harder, get the car over on the RR and get most of his turning done before he gets on the gas. Most of the 4 bars have plenty of rear steer when the LR is up and the car is over on the RR. On the tight tracks, especially in the moisture, you have to run em in hard to get everything working. Dragging a lil brake as he rolls back on the throttle will help too.

I would go through all of that, before I would change anything.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted August 17, 2004 04:09 PM  
He says if he drives in harder the car wants to skate up on him. If he could drive it in harder he said he would because he feels like he lifts before everybody else.

Around the top he is alot smoother. But from what i have seen at the bottom he gets back into the gas at the same point he would at the top and i think maybe he is getting on the bars and car turns real quick then locks down and is ready to go straight but he still has some corner to go yet. Watching shyrock and others at usmts show at the same track they looked like they were very slow rolling into the corner but then picked up the gas and came right on out. He says he hasnt been able to run on the bottom for a couple years so i think maybe his timing is off and he is trying to drive the bottom like he would the top but there is less room to work with because its a tighter radius.

Was mentioned to take some LR bite out but I dont know whether that will help without hurting coming off.

Any other suggestions.

norightturn
Dirt Maniac

Total posts: 159
posted August 18, 2004 07:34 AM  
Put a little more rear brake in the car to loosen the car up getting in. Dont pick back up on the throttle until you have a decent line on the straightaway. You can take out some left rear and it will help, but its gonna hurt you coming off and hurt you up top.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted August 18, 2004 08:34 AM  
Thats kind of what i was thinking. Actually now that i think about it he could prob use a little more LR bite to help him come off because when he had 70# it was good around the top but he took some out because it was tight on the bottom but, i think that was from being too anxious to get back in the gas. If he would roll furthur into the corner then he could prob come out better and smoother. This is his first year in a 4 bar and its hard to tell whether its the car or he's just not used to it.

norightturn
Dirt Maniac

Total posts: 159
posted August 18, 2004 09:26 AM  
Had the same prob with my new 4 bar this year. It was the way I was driving it not the car. With me I could make that style of driving real fast in the black keeping the car straight going in rotate the car at the apex and drive off. In the moisture, I have to start turning early and get the backend around and slide (not out of shape just a little loose) a lil bit through the apex till I have a line I know I can hit down the straights. At the apex the nose of the car should be pointing at a point on the wall between 1/4 and 1/2 way down the straight. When you do it like that you should be accelerating later, but the car should take quiet a bit of throttle as you come off.

[This message has been edited by norightturn (edited August 18, 2004).]

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