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Author Topic:   4-Z tight in middle of corner
jmsmodfan
Dirt Full Roller

Total posts: 54
posted June 30, 2004 07:55 AM  
I have a DW8 with a the lr spring clamped up in front of the axle and the rr(zlink) behind the axle. The car can get into the corner pretty good but when the driver gets back into the gas the front end wants to slide up the track.

running shorty panhard
lr 225 rr200
lf 650 rf750

left bar angles:
bottom 0-5 degrees
top 15-20 degrees

right bar angles:
front(bottom) 0-5 degrees
back (top) level

I did move the back of the back zlink bar down and this loosened up some but still wanted to slide the front end.

running about 95# of left bite.

Thanks in advance for any help!

NJantz
Dirt Forum Champ
Total posts: 755
posted June 30, 2004 08:24 AM  
Raise your bottom bars up a hole or two.
This will produce more rollsteer and make the car looser in the middle. You'll also have more forward bite.

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted June 30, 2004 08:42 AM  
Also try trailing the RR just a little like 1/4" or so.

Maybe taking a little bit of bite out of it. Does it push all the way out of the corner or just getting back on the gas?

zeroracing
Dirt Forum Champ
Total posts: 1875
posted June 30, 2004 10:47 AM  
put some downhill to back angle in the top rearward facing bar on the z link. this will give the car some more rr drive, and make the rr bite harder when he gets on the gas. then the car will free itself up some and stop pushing the front end.

jmsmodfan
Dirt Full Roller

Total posts: 54
posted June 30, 2004 06:41 PM  
dirtbuster:
It pretty much pushes when he gets on the gas. Once he lets back out to turn the car he can usually can come out of the corner pretty good. Sometimes it is pretty loose coming off the corner. Most of this is probably throttle controll because he is fighting it in the middle of the corner. If we can get the push to go away we will then see if it is still loose coming off.

Thank you,

boas51
Dirt Maniac

Total posts: 190
posted July 01, 2004 07:46 PM  
when you say rr spring is behind, is it clamped or on the birdcage? either way moving it to the front will loosen the car up through the center.

jmsmodfan
Dirt Full Roller

Total posts: 54
posted July 01, 2004 09:04 PM  
It is on the birdcage that the zlinks are connected to.

dogwalker
Dirt Full Roller

Total posts: 65
posted July 02, 2004 11:53 AM  
If you try all of the rear end adjustments and it still pushes, you might consider running less front spring split. I run 100lb reverse split up front on a 4/z and it turns great.


dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 02, 2004 11:58 AM  
At 95#LR which front wheel is heavier, left or right. I would think they whould be pretty close to equal or maybe jsut a hair heavier on the left. IF its heaveier on the RF then I would try softening that spring like the previous poster mentioned. On our dw9 we are running 50# split in the front 600lf 650rf

jmsmodfan
Dirt Full Roller

Total posts: 54
posted July 03, 2004 09:29 AM  
the lf is heavier by about five pounds. Would you still recommend softening the front?

dirtywrench13
Dirt Freak

Total posts: 324
posted July 05, 2004 07:22 AM  
I'D LOOK AT REAR BITE ESPECIALLY LEFT REAR.TRY TO GET IT DOWN TO ABOUT 75 LBS.FRONT BITE ONLY AFFECT ENTRY AND EXIT DIRECTLY.

toprod95
Dirt Newbie

Total posts: 1
posted July 06, 2004 03:40 PM  
Alot of left rear will make the car loose getting into the corner.Did you say you have 95 ibs. of left rear is so is that you in the car i hope.Where is your Panhard bar mounted?Do you have alot of angle in it?

dirtbuster
Dirt Forum Champ
Total posts: 2007
posted July 06, 2004 04:02 PM  
IF it only pushes when hes on the gas it sounds like to much bite. Try going to about 50# and see what it does. Also what are you running for camber on the RF. We found we needed to run close to 3 degrees or more in order to keep the RF tire from leaning out in the turn because of all the body roll and movemnet we got with the 4 link setup. WEnt from 1 3/4 to 3 1/2 and driver said it made a big difference in keeping the front end in line.

jakestevens
Dirt Full Roller

Total posts: 68
posted July 07, 2004 08:10 PM  
Try raising the LR lower bar up a hole. This will create a little rear steer in the middle.

bigstick4u
Dirt Newbie

Total posts: 3
posted July 07, 2004 09:12 PM  
Get rid of the short panhard bar! Run a j-bar. Mount the pinion side the second hole from the bottom. The frame side about 5" up from the pinion.

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