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Re: Chassis help
[Re: Lil Wedge]
#478060
09/24/09 06:46 AM
09/24/09 06:46 AM
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Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
Jacob Pitt
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Mansfield, Tx
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I'm no expert but, I think a little more pre-load should fix it. My Dart was doing the same thing (ladder bar) so I lengthened the lower adjuster a half turn and it goes straight as a string now.
Last edited by ChallyL427; 09/24/09 02:45 PM.
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Re: Chassis help
[Re: Lil Wedge]
#478061
09/24/09 08:11 AM
09/24/09 08:11 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
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Romeo MI
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Quote:
I moved my 4 link instant center forward and higher (58 out and 14" up)and it worked much better and car 60' it's best ever and goes straight every run, however it tends to roll over on the right rear and lift the left front slightly higher, Would a little more preload solve this?
Put a anti roll bar on it.... I dont like to add any
more pre load than is needed to make it go straight
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Re: Chassis help
[Re: Jacob Pitt]
#478062
09/24/09 11:00 AM
09/24/09 11:00 AM
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Joined: Jan 2003
Posts: 32,394
Quicktree
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Quote:
I'm no expert but, I think a little more pre-load on the passenger side lower bar should fix it. My Dart was doing the same thing (ladder bar) so I lengthened the lower adjuster a half turn and it goes straight as a string now.
never heard of anyone adding preload to a lower bar  ????
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Re: Chassis help
[Re: MR_P_BODY]
#478063
09/24/09 11:02 AM
09/24/09 11:02 AM
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Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
I moved my 4 link instant center forward and higher (58 out and 14" up)and it worked much better and car 60' it's best ever and goes straight every run, however it tends to roll over on the right rear and lift the left front slightly higher, Would a little more preload solve this?
Put a anti roll bar on it.... I dont like to add any
more pre load than is needed to make it go straight
I think Monte stated on another post that it was ok to add preload to correct that problem. the upper right bar. but I am not sure if the bar should go out or in?
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Post deleted by Defbob
[Re: Quicktree]
#478064
09/24/09 11:44 AM
09/24/09 11:44 AM
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Anonymous
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Re: Chassis help
#478065
09/24/09 12:04 PM
09/24/09 12:04 PM
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Joined: Jan 2003
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Quote:
Quote:
Quote:
I'm no expert but, I think a little more pre-load on the passenger side lower bar should fix it. My Dart was doing the same thing (ladder bar) so I lengthened the lower adjuster a half turn and it goes straight as a string now.
never heard of anyone adding preload to a lower bar ????
in effect that would change the wheelbase. 
and make the rear out of square
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Post deleted by Defbob
[Re: Quicktree]
#478066
09/24/09 12:16 PM
09/24/09 12:16 PM
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Re: Chassis help
[Re: Quicktree]
#478067
09/24/09 01:23 PM
09/24/09 01:23 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
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Romeo MI
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Quote:
Quote:
Quote:
I moved my 4 link instant center forward and higher (58 out and 14" up)and it worked much better and car 60' it's best ever and goes straight every run, however it tends to roll over on the right rear and lift the left front slightly higher, Would a little more preload solve this?
Put a anti roll bar on it.... I dont like to add any
more pre load than is needed to make it go straight
I think Monte stated on another post that it was ok to add preload to correct that problem. the upper right bar. but I am not sure if the bar should go out or in?
See where it says "I"... I still feel that way. Reason
why is if you set alot of preload when you snap out
of the pedal on top end it can drive the car one way.
Also when you guys are talking the bars I and most
all chassis guys use the lower bars to set wheel base
and square the rearend, top left to set pinion angle
and top right to set pre load
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Re: Chassis help
[Re: MR_P_BODY]
#478068
09/24/09 01:34 PM
09/24/09 01:34 PM
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Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
I moved my 4 link instant center forward and higher (58 out and 14" up)and it worked much better and car 60' it's best ever and goes straight every run, however it tends to roll over on the right rear and lift the left front slightly higher, Would a little more preload solve this?
Put a anti roll bar on it.... I dont like to add any
more pre load than is needed to make it go straight
I think Monte stated on another post that it was ok to add preload to correct that problem. the upper right bar. but I am not sure if the bar should go out or in?
See where it says "I"... I still feel that way. Reason
why is if you set alot of preload when you snap out
of the pedal on top end it can drive the car one way.
Also when you guys are talking the bars I and most
all chassis guys use the lower bars to set wheel base
and square the rearend, top left to set pinion angle
and top right to set pre load
 with how to set the bars. but I wouldn't hesitate to make a preload adjustment to get the car down the track straight and level
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Re: Chassis help
[Re: Jacob Pitt]
#478070
09/24/09 02:31 PM
09/24/09 02:31 PM
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Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Quote:
Quote:
Quote:
Quote:
I'm no expert but, I think a little more pre-load on the passenger side lower bar should fix it. My Dart was doing the same thing (ladder bar) so I lengthened the lower adjuster a half turn and it goes straight as a string now.
never heard of anyone adding preload to a lower bar ????
in effect that would change the wheelbase.
and make the rear out of square
thus on launch making the car automatically steer to right or left depending which side you tried to preload
I'm not talking about taking the front eyelet on the ladder bar and lengthening it. I'm talking about the adjuster on the under side of the ladder bar where it mounts to the rearend. I followed my chassis guys instructions. Car used to spin and go right, now it hooks and goes straight. 1.35 in the 60' just last Saturday.
we are talking 4 link not ladder bar.
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Re: Chassis help
[Re: Jacob Pitt]
#478072
09/24/09 02:46 PM
09/24/09 02:46 PM
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Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
Jacob Pitt
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Joined: Feb 2005
Posts: 2,528
Mansfield, Tx
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There I fixed it. Excuse my ignorance on four links.
2013 NHRA D4 Stock Champ
#4 in the World IHRA Stock
2x IHRA Div.4 Stock Champ
14x Track Champ
All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837
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Re: Chassis help
[Re: Jacob Pitt]
#478073
09/24/09 02:54 PM
09/24/09 02:54 PM
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Joined: Jan 2003
Posts: 32,394
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Quote:
There I fixed it. Excuse my ignorance on four links.
hey no problem, didn't notice you were talking ladders. don't be so sensitive 
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Re: Chassis help
[Re: Quicktree]
#478074
09/24/09 05:31 PM
09/24/09 05:31 PM
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
Chassisman
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
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Quote:
Quote:
There I fixed it. Excuse my ignorance on four links.
hey no problem, didn't notice you were talking ladders. don't be so sensitive
And members wonder why I quit posting alot.......
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Post deleted by Defbob
[Re: Chassisman]
#478075
09/24/09 05:39 PM
09/24/09 05:39 PM
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Re: Chassis help
[Re: Chassisman]
#478076
09/24/09 07:54 PM
09/24/09 07:54 PM
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Joined: Aug 2007
Posts: 316
Ohio
Lil Wedge
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Ohio
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First Chally427, I understood you were talking about ladder bars and was trying to be helpful and I really appreciate it. Don't stop trying to help. What I did was a couple of weeks ago, I had moved the bars back like a lot suggested, and It just didn't work well, well I noticed the car seemed to have been dogtracking for quite a while. Well the rear was way out of square, more than you would think by looking at and seeing it run. I took it apart, moved ic to about 58 out and 14 inches up, squared it and picked up over a tenth. 60' times dropped 4-5 hundreths. A little more playing with the shocks and it was more consistant than it has been in 2 years. Went from running 10.20's to 10.0's in bad air and 9.92 at Norwalk .Picked up almost 3 tenths and my friends wanted to know what I did, lol all I did was square it up. Anyway it leaves pretty good and straight but it tends to roll over a little on right rear and pull the left front a little higher.I was the one Monte told to use the Preload if I needed it, but neither of us knew the rear was so jacked up. Now it is much better, and going straight and I was a little apprehensive to put more preload if that was the wrong way to cure the roll.Jon Holt set it up a few years back and it was great.He said it wasn't fast enough for a anti roll bar, and when He got done, it didn't need it.Lack of free time to get it back to him has led me to try things myself. Believe me all, all advise is appreciated. Thanks Dan
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Re: Chassis help
#478077
09/24/09 11:30 PM
09/24/09 11:30 PM
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
Chassisman
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master
Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
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Quote:
Quote:
Quote:
Quote:
There I fixed it. Excuse my ignorance on four links.
hey no problem, didn't notice you were talking ladders. don't be so sensitive
And members wonder why I quit posting alot.......
and don't you be so sensitive 
...not sensitive...just tired of PLEASE HELP ME....then we you do help they say NOPE...thats not it,MY chassis guy said BLAH BLAH BLAH..well if your talkin to me your last guy obviously wasnt a chassis guy...big difference between theory and application and sawzall and a welder...........
I'll stop now....40 sure is having a bad effect on me.. 
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Post deleted by Defbob
[Re: Chassisman]
#478078
09/24/09 11:34 PM
09/24/09 11:34 PM
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