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Author Topic:   tight on entry
markjaeger
Dirt Newbie

Total posts: 1
posted July 16, 2003 01:32 AM  
1999 grt 75's front 94's rear 500lf 400rf 250lr 225rr 52.8%left 53.8%rear 80-100lbs lr left top bar 3rd hole from bottom right top bar in 3rd hole left lower in bottom right lower in 2nd hole from bottom has updates we run on 10" tires weigh 2600# tight entering corner pushes all the way through loose off tried many things already would appreciate help 1/2 mile banked dirt/clay could weight placement have something to do with it?

[This message has been edited by markjaeger (edited July 17, 2003).]

rocket36
Dirt Freak

Total posts: 209
posted July 16, 2003 09:50 AM  
i suffered the same problem with my rocket most of last year, have been doing some research and think that you will probably benefit from lifting your bottom arms up. run them both level to start with then try lifting them both one hole, if it's too much, drop the right side one back level again.
before our racing season ended, we lifted both our bottom rods (made them level) and I believe that this made the biggest improvement of all the things we tried, and I am keen to try lifting them some more.
by lifting them it will produce more roll steer (by dragging the LR forward and pushing RR back) this will in turn shove up on the chassis (LR) putting more angle in the top arm - producing more indexing.
You could also try taking some angle out of the J-bar, if you haven't already. try going up one hole on the pinion.
hope this helps. let us know how you go.

#46
Dirt Roller

Total posts: 23
posted July 16, 2003 02:12 PM  
Softening the LF should loosen you on entry only, (when you are off the gas). Loosening the entry may solve your exit problems too.

right rear
Dirt Newbie

Total posts: 2
posted August 25, 2003 04:15 PM  
You could add more bite to the car say 150 to 175 pounds. This will loosen you entry and should help exit. If you are running a 90/10, chunk it you don't need it. This will also free car up and help it get back up on the LR bars on exit.

[This message has been edited by right rear (edited August 29, 2003).]

dirtrace54
Dirt Maniac

Total posts: 192
posted September 08, 2003 03:55 PM  
I agree with #46. When problems are seen at the start of the corner, they can affect you the rest of the way through. When a car is tight going in the corner, they ussually have a tendancy to break completely loose coming out. Lowering weight placement can take some of the right rear side bite aand loosin the car up. Lighten ing the left front works too. The j-bar idea can help by raising the pinion. On the bigger tracks tho, i have raised the entire bar one notch. Hope this helps.

HCI Shock Dyno
Dirt Roller

Total posts: 18
posted September 29, 2003 06:48 AM  
I'm going to go in a different direction. What kind of shocks are you running and what kind of rebound do you have on the LR,Decreasing the rebound on the LR combined with an increase on compression on the RF will lossen a car on entry. Does the track you run on have high banks or flat and are the corners tight or sweeping? The reason for this question is on a smooth sweeping track the shaft velocity of your shocks is slower but on a rough tight cornered track the shocks shaft velocity is much greater---- slower shaft velocity---softer resistance
Faster shaft velocity---stiffer resistance

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H.L.Hupperich Jr.
HCI Shock Dyno Service

LyonRacing
Dirt Roller

Total posts: 22
posted October 14, 2003 03:10 PM  
Man, you want tight on entry.. being able to really drive that car in there.. and hopefully you have enough gear to turn it with the throttle... I'd recomend... going with 200 LR and 500 RF and a 400 LF.. springs baby.. keep it tight going in

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