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Author Topic:   4 link Swingarm Harris SETUP HELP NEEDED
Modracer86
Dirt Forum Racer

Total posts: 79
posted September 18, 2005 10:04 PM  
Needing major help i have a harris chassis that is setup four bar on the left and swingarm on the right and the car has noooooo sidebite what so ever also i don't think the car is rolling on the right rear i do no that it is not pulling no weight off the left front both of the front corners just stays flat through the corner and down the straightways anyways here is my set up now and it is something i tried this weekend and of course it didn't work
springs
lf 650 rf 700
lr 175 rr 200
shocks
lf 74 rf 75
lr 95 rr 93
my top left bar is at 21 degrees and bottom at 8 degrees my right rear bar is 0 degrees with the swingarm being in the center hole one the frame My springs are mounted on the swingarm on the right and behind the axle on the left i am running a spring pullbar and a cushined j bar that is alllllll the way up on the frame and alllll the way down on the pinion i raised my ride heights higher then what harris calls for just to see if i could get the car to roll over and it was better last night then before but it is still nowhere near right so if anybody has anyyyy info on this setup that would be great thanks in advance Les
also my weights is around 56%rear 51 %cross and 52% left and my pullbar is set allllll the way to the left thanks again if you need anymore info just let me know i would really like to get it set up and run at least one race before the season is over

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HarrisMod#30
Dirt Freak

Total posts: 353
posted September 19, 2005 06:54 PM  
throw that swing arm in the garbage, we never had any luck with it, car was irratic. run a zlink right rear or clamp it up and run a 2 link, also switch your lr spring to a 225 and put your rr spring(200) on top of the housing, car will lift then and youl have tons of sidebite. Change that lr shock to a 93 or u could even go with a 97-2 or 95-3 or 96-2( even though brett from Harris tells us not to run those split shocks...lol) we are also clamped up in front of the axle on the lr with the spring,we also run a straight panhard bar mounted below the pionion and we set the height on the chassis side by setting the panhard bar to 19 inches and then center the rearend and wherever it ends up it ends up. just a suggestion, i cant help you out with the swing arm deal, but maybe someone here can.

WPP
Dirt Freak

Total posts: 451
posted September 19, 2005 08:18 PM  
A 200 spring on the swingarm the car should be very loose on entry that like not running a spring at all if you stay the swingarm you mayneed a 300pd spring or a stiffer spring will give you more sidebite off the throttle on entry also i notice you had 8 degrees on the lower bar on the lr you may need to level that bar out or -3 degrees and you also could level the rr lower bar also check your spring rate in the tool box all of this should tighten the car up

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 19, 2005 09:06 PM  
HarrisMod#30 i called Brett today and told him i was going to trash the swingarm but i don't know i guess i will ride out the rest of the year with it but would like it to work so if i go to a 300 on the right and 0 or -3 on the left bottom bar that would help. Also i was told today that i could lower the right rear back bar to a 10 degree downhill and that would plant the right rear tire is this correct? WPP my swingarm (right rear lower bar) is level now. ANY ANY ANY more info would be great, How hard and what does it intell to switch the right rear from a swingarm to a z link can i use the birdcage that is on the rear now or ??? and all i have to do is move the spring to the top of the housing and make that spring a weight jack setup right?? and put a straight bar on the lower bar if all of this is correct please let me know or correct me cause i am just about ready to do something different if this 300 lb spring don't work this weekend thanks in advance

Les

autoshop
Dirt Freak

Total posts: 298
posted September 19, 2005 11:30 PM  
you can get the z link birdcage and the rear bracket from Harris.I run the lower bar at -5 down and the rear bar in the second hole.I run a 300 spring on the swing arm. The lr lower is level with a 225 clamped up in front.The only different thing I perfer is even springs in front but that just me.I can stick the car high or low and it feels like it on rails.

Kromulous
Dirt Forum Champ
Total posts: 796
posted September 20, 2005 07:28 AM  
I would venture a guess but sounds to me like the J-bar is to high on the frame side. People will argue but raising the frame side, or adding more rake does not lower the rear RC, it only puts more "scotch" or left side lift in the car, not true body roll generated from a low rear RC. Thats my belief anyway.

On our Swing arm / Z-link RR i got loads of side bite, and my J-bar is flat across the back, and were running a 300lb spring on the RR and 250lbs LR bite in the 4 bar LR (spring behind).

Does your car have a rear bar on the RR, facing back to the rear of the car? You said in your last post about 10* down angle, so i am confused just what exactly your running. If you do have a Swing arm, and a rear bar facing aft the downward angle will help, it adds drive to the RR, will make you looser on power.

I say lower that frame side J-bar, make the flat part, after it curves from the pinion mount heim, flat with the ground. Then throw a 300lb or so spring on the RR and get more cross in it, or it will plow like a tractor getting in.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 20, 2005 08:44 AM  
The right rear of the car has the swingarm in front on bottom and a bar going back (z link) right now that bar is straight 0 degrees i was told that i could drop it i ordered a 350 that i am going to put on the right rear and i am going to put the 250 i have on the left rear (behind the rearend) then put my j bar center of pinion and about level or so on the frame. Right?? i have tried everthing else and does not seem to work so i will try this. Harris car are supposed to set low right? and does not move on the throttle as much as the rest do they? cause i have seen pics of a harris car and a dirtworks right beside it and the dw is jacked up on the left side and the harris is flatt and they where both running the same set up if all of this sounds right could someone let me know thanks in advance Les

Modracer86
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Total posts: 79
posted September 20, 2005 08:46 AM  
Kromulous you said to add more cross % what percent should i be running in fact what percents do i need all the way
cross
left
rear
and how heavy on the left rear
thanks again in advance Les

Kromulous
Dirt Forum Champ
Total posts: 796
posted September 20, 2005 10:00 AM  
I am running the exact same set up, swing arm / z-link and 4 bar LR. My bar lengths are different and my 4 bar is abit different but i still run the spring behind.

Anyway we run 55 to 56% rear, 52 to 53% left side, and around 54% cross, with about 150lbs of LR bite. The LR bite will help get the car to turn in.

The rear facing bar on the right side, i use it to adjust RR drive, if the car is to tight off or out of the corner i lower it, to increse drive. Opposite if its loose off. Start out with it level.

The J-bar start out with about 5" of rake, measure while the car is at ride height from the floor to the bolt on both ends, and subtract them. The flat part of the J-bar, before it bends to go around the yoke is what i call the back. This part should be pretty flat.

Your LR bar angles look good, but i think i would raise the RR swing arm up 1 hole. I run mine with some up angle in it, and some down angle in the rear facing bar, except when were on UMP Hoosier's then its level.

A couple more points, depending on how you enter the corners is how you adjust the J-bar. If you go in off the bars, car dropped down raising the J-bar (frame side only, or adding rake) will tighten you in the center of the corner. If you can carry it in on the bars lowering it will loosen you in the center.

The biggest problem i have with this set up is to get it to steer enough in, and to get it to rotate in the center of the turns. Its usually tight all the way around. Trick is to loosen entry enough to where the car will come around as you go in, so it can turn the corner and you can get back in the gas. Easier said than done.

Kromulous
Dirt Forum Champ
Total posts: 796
posted September 20, 2005 10:01 AM  
What kinda track do you run this set up on? I notice it tends to work better on a bigger track, but i am starting to get a handle on it running smaller ones, 1/4 mile.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 20, 2005 10:39 AM  
My friday night track is 3/8 low banking tracks and where i usally run on sat night is 3/8 semi banked track infact all is 3/8 but one track i run at sometimes is a D shape and the other i run at sometimes has l-o-n-g corners that you have to drive around you know the kind you roll into and then go there is no setting the car for the corner. but the 1st two i metioned i run at on a weekly basis i will try everything you just toldme and see what happens this weekend like i said i ordered a 350 for the rr and going to put a 250 on the left rear behind the rearend is this right? and i will rescale the car to see what happens. Do you run any extra weight on your car? you know to help it roll. and the bottom left bar should be 0 or is it ok at 8 degrees? right now my back rr bar is 0 degrees and my swingarm is in the center hole on the 5 hole bracket. and you say i should move that up one hole and drop the back bar one hole is this correct? Thanks in advance Les

Kromulous
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Total posts: 796
posted September 20, 2005 10:45 AM  
250 behind sounds good.

The rear facing bar on the RR leave it at level to start with.

The swing arm should have some up angle in it at ride height, so raise it a hole if its level, once you get the ride heights set.

8 degrees on that lower LR bar sounds ok, if it steers to much in, lower it.

No extra weight, our car is a sled, its gotta go on a major diet this winter LOL. 2310 with a 1/2 tank of fuel no driver.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 20, 2005 10:53 AM  
Well that the way my car is too but i was told to add about 75 lbs to help it roll over on the right rear i am just wondering if i should leave it or take it off my car with me in it after the heat is about 2550 and i added 75 to that for last week. i am almost to pure street weight lol anyways let me know your opion on the weight take it off or leave it thanks Les

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 20, 2005 07:15 PM  
I was told that 800 on the lf 700 on rf 175 lr 250 on the rr would make the car tighter also was told that i could pitch the car a little to the right (left side higher) this would also help is this correct? I was going to go to a stiffer spring till i was told this today just wondering if the heavier left front spring would work instead of heavier right rear just wondering cause i was told that if i go to 300 or more rr or 200 or more lr that would make the back of the car to stiff this is just what i was told and need to know before i make (ANOTHER) wrong move Thanks in advance Les

Kromulous
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Total posts: 796
posted September 21, 2005 07:30 AM  
Ok, we need to start at the begining here.

Tell us what exactly the car is doing, you say it has no side bite. Ok, where and when? Is it loose in, loose off or just generaly loose all together?

The 800 on the LF will make it tighter in. The rear springs look fine if the rear roll center is set to work with them properly.

No idea what they mean by pitch and left side higher.



Modracer86
Dirt Forum Racer

Total posts: 79
posted September 21, 2005 07:54 AM  
The car is loose thoughout the corner. When you say the springs look fine do you mean the 350rr 250lr or the 250rr 175lr and what is your opinion on the front should i go with 800lf 700rf or 700lf 650rf or???? i would like the car to be tight so tight that it might push a little then i can adjust back down (can't I) i don't know all i know is a little sidebite would be GREAT lol

Kromulous
Dirt Forum Champ
Total posts: 796
posted September 21, 2005 09:39 AM  
You have to remember that no matter what springs you have on the rear, or front they have to work with the rest of the suspension. If you got a 600lb spring on the RR, and a 400lb on the LR and the rear roll center is 12 inches below ground level it may work.

Same as having a 50lb spring on the RR and a 25 Lb on the LR, it may work. The rear RC would have to be above the car 2ft, but this is just to show that the suspension and its roll centers as well as shocks angles etc all need to work together or it isnt going to handle well.


Go with the 350 and 250, to start. Lower that J-bar down, alot, till the car begins to roll over on the RR, not lift the LR. Big difference there.

Put about a 5" split between the 2 mounting points of the J-bar. Measure from the ground up to the bolt on each end, then subtract the pinion end from the frame end, and there shold be 5" difference. You gotta do this while the car is at ride height as well.

Take that excess weight off for now, its a crutch. You can use it later after you get a handle on it, for when you want to pick up some easy traction etc.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 21, 2005 10:41 AM  
So as far as taking the wait off and using it when i need traction. If i put it on at the track it would throw the whole car off won't it? just a question. But i will take the wait off put the 350 on the rr 250 on the left rear 700 on the left front and 650 on the right front move my j bar down to a 5 inch split and my top left bar stays where it is bottome left bar is ok to right? Move my swingarm bar up one hole and leave the back bar at 0* but i could drop it down one whole if needed correct?

Kromulous
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Total posts: 796
posted September 21, 2005 10:46 AM  
Lower both LR bars down one hole.

Everything else sounds good.

Let us know how it runs.

Krom.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 25, 2005 09:12 AM  
OK here is what i did i ended up going to
lf 700 rf 650
lr 250 rr 325
I lowered my j-bar to the bottom hole on the frame and even with the pinion which is about 4 inches difference i set all my weights percents to what you told me and i have about 114 lbs of lr bite
Ok friday nite at the track the track started out dry slick and just got worst it felt like i didn't have enough side bit so i swithced the 250 lr to a 200 lr and lowered my left side bottom bar down to the last hole which is about -3* top bar i left alone at 18* and the right rear facing bar i left alone a 0* and it was just so slick i was losing in the corners BAD. Sat. nite the track was hooked up and FAST i didn't change a thing on my car from friday nite and in hot laps and the heat race it was good infact it was a little tooooooo tight (my little 355 would not hardly turn it) but i was losing comeing out of the corners like i needed more forward bite but i didn't know how to get more forward bite coming out with out makeing it tighter going in. So here are my questions for this week.
1. On a hooked up track how do i make it a little looser in the middle of the turn?
2. need more forward bite but don't need it no tighter going in.
3. on the dry slick track could i lower my j-bar on the pinion down to the bottom to gain sidebite or do i need to go up on the rr spring?
And i REALLY thank you for alll the help so far the car was great sat nite (not so goood friday but still better then it was) I always said that i wanted so tight it wouldnt turn then i can back down and i finaly got it there i have been trying allllll year to get it there now the year is almost over it is there lol

Modracer86
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Total posts: 79
posted September 25, 2005 09:14 AM  
Also i was wondering about front roll center my car stays planted in the front i mean it does not lean or nothing both front tires are equal all the way around the track is this right or sould the lf come up and lean to the right a little i don't mean comeing off the ground just shifting weight and i was wondering if the front roll center could be off.

Kromulous
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Total posts: 796
posted September 26, 2005 08:08 AM  
What kinda front clip is on this car?

That LR lower bar needs more up angle on a tacky track. You need to set it at 5* up. If you need more FWD bite on a slick track, add more angle to it and take out some stagger.

How much rear stagger you running?

On that Saturday track, you need to swap the front springs. You need the heavier one on the RF. Depening on the clip, you may need to lower your rates, but we'll see.

Do you have provisons to put on a short straight panhard bar, to the left side of the pinion?

We just put this on our car, on a troublesome 1/4 mile and the car came to life. it's 12" long total and i got 4" rake in it and the car finnally decided to turn.

Sounds like your getting there, how many more races you got this year?

Krom.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 26, 2005 10:42 AM  
I am thinking the front clip is a chevelle not sure though i hate to admit this but how do you tell? I know when i got the car it had 800 on both sides don't know if that tells you anything or not.
I have also never checked the stagger but i can tell you that i run 8 and 10 psi whatever that may be you might know.
No we do not have provisions we can run one and i thought about that i didn't know if it would help or not though so i never did. i have a double sided pinion mount on the car and is ready for one if it would help.
We have till oct 22 that is the last race unless i get the car close enough to run a couple bigger races the 1st 2 weeks of november.

Kromulous
Dirt Forum Champ
Total posts: 796
posted September 26, 2005 11:58 AM  
Anyone got an quick ways to identify a chevelle clip? I know the side rails that extend to the back have a ripple, in them, there not smooth sided like a small metric. I dont know how to tell off hand myself, we run a Ford clip.

Try the short bar, keep the rear end housing in the same location laterally, then make the bar fit, hopefully it ends up about 11" long.

Set it up with 4" rake, even with the pinion on the pinion side, and 4" higher on the frame side.

How much RF shock travel are you getting?

Re-set the LR bar angles, to 5* up on the lower, and around 20* on the top bar. At ride height.

Your swing arm / z-link side sounds ok.

I have had alot better luck with a stiffer spring on the LR, i ran a 200 for along time and couldnt get the car to turn in. I went to a 250, and sometimes a 275. On a bigger track the stiffer LR will help you getting in alot more, at least it does for me.

You have scales? Give me all your scale numbers, this set up is sensitive to left side weight and rear weight. Scale numbers without driver too.

How much do you weigh?, so i can base it off our numbers, our driver is 185lbs.

You run the Hoosier UMP EMOD tires?

More later, Krom.


Modracer86
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Total posts: 79
posted September 26, 2005 05:46 PM  
I am going to try the short bar this week i should get it on tommorrow i hope.
I am getting about 2-2 1/2 inches of travel.
My rear percent is about 54.5% left is 52% and cross is about 52.5% all of these is without driver and what i have left after a race on fuel i weigh about 190 myself and we run on american racers g-60's oh yeah i am running about 114lbs of left rear. What do you think about switching my front springs back to 650 left front 700 right front that would loosen a little on entry then i can add a little more left rear for forward right is that right or wrong? thanks Les

CUSTOMPERFORMANCE
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posted September 26, 2005 05:57 PM  
Chevelle has smooth side rails small metric has I type rails. Unless its been stubbed by someone else than Harris it will have a 68-72 chevelle stub only.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 26, 2005 09:17 PM  
Nope the only people that has been doing any welding on it is Harris Auto Racing

Kromulous
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Total posts: 796
posted September 27, 2005 08:08 AM  
Your on the right track.

I would get that left side weight up to 53%, and a little more cross. I run 55% rear, 53% left, and around 54% cross. We seem to like the high wedge set ups.

I dont believe in pitching the car or setting it in the corner, i want the car to drive in straight and fast and when he rolls off the throttle to automaticly come around. So i think this is why we gravitate to the high wedge type set ups.

I think, ideally the rear percent would be 56 to 57%, and the left side 53% and cross around 54 to 55%

Now i dont run the G60 tire, so my set up help will only get you so far. We run Hoosier UMP tire and i have no expierence with the G60's.

Try 150lbs LR Bite.

2 1/2 on the RF is a little low, you gotta softer front spring? maybe a 600 or so? Put the 650 on the RF, and the 600 or 550 on the left. That will help on the tacky track.

If you got the chevelle clip, wich it sounds like you do. You can get away with very light front springs, even into the 500 to 55 on the RF. Properly set up of course.

madnik18
Dirt Full Roller

Total posts: 40
posted September 27, 2005 11:09 AM  
what year is this harris? and what is the bar lengths?

i know two people that tried the swing arm on a harris and did not like it at all.. they said the harris cars set to low to get it to work right..
the only thing i seen on a harris car thats works is a 3link with brake floaters.. or you can look in to the 4-2 setup.. that is what i am doing with my harris over the winter...

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 27, 2005 06:34 PM  
Why a 4-2 what about a 4 -z i think i am going to go to a 4 link lr and a straight z link on the right rear over the winter but i must admit the swingarm did do alot better this past weekend then it has ever did. But i do agree that the harris cars set wayyyyyyy to low.

Modracer86
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Total posts: 79
posted September 27, 2005 10:23 PM  
So when the track is dry slick the best way to grab some side bite is to raise the j-bar on the frame side or lower it on the pinion side? And when you move the j-bar do i need to move my rearend back or do i just leave it where ever it ends up? and i raise my lower left side bar to get more forward bite is this correct.

Kromulous
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posted September 28, 2005 08:18 AM  
Raise the ride heights and put a drop down tube up under the rear end housing on the left hand side if you have to.

This is what i did to our car and it works. Our car the rear end sits higher than the front. Most cars i see are level, or rear lower, i have no idea how they get them to turn unless they are wailing on the brake pedal.


Modracer86
Dirt Forum Racer

Total posts: 79
posted September 29, 2005 05:20 AM  
I don't follow you on put a drop down tube on the left side what do you mean by that? And how much should i raise my ride heights? And what about the j-bar does the short bar to the left side do the same and the long one that goes to the right side as far as adjustments re made anyways.

Modracer86
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Total posts: 79
posted September 29, 2005 09:52 AM  
I think i want to put a short bar on instead of my j bar all i need to do to do this is measure the rearend where it is now and go from the left side of the pinion to the frame right? Brett from harris told me that would get me close but if i wanted to stay with this setup i needed to get a pinion maount with tthe hole under the pinion and use a 19" center to center bar is all of this is correct. For friday i am going with a 400rr and 250 lr because that track is allllllways slick (dryslick) and i can go to a 200 lr cant i if i need to. Then for sat nite that track is somewhat tacky i can go back to a 325 rr and again thanks for all your help.

Kromulous
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posted September 29, 2005 10:07 AM  
If you race IMCA you'll need to run the bar Harris said to run. There rules are the 19" deal.

If your unsanctioned you can run the short bar, left side of pinion, and to the left side of the car / frame. Keep the rear end in the same location laterally, and set the bar up to that measurement. As well mount it with 4" of rake, and on the pinion side, keep the heim even with the yoke / pinion.

I'd suggest thou if you run IMCA, only part of the time, to go with the 19" bar under the yoke. Might as well get it set up legal, if you get it hooked up on a short bar and cant run it, that would blow.

The drop down bar allows the rear end housing on the left hand side to drop down further before it hits the frame, basicly it dips down towards the ground more than the right side, or is your car an Over rail?

Kromulous
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posted September 29, 2005 10:09 AM  
Also i hear alot of good things about that pinion mount, the one with the panhard mounted up under the yoke.

Let me know which one you go with.

madnik18
Dirt Full Roller

Total posts: 40
posted September 29, 2005 11:14 AM  
hey modracer what is your LR bar lenghts?

i am asking because all the harris i have seen would take 20 inch bottom and a 14 to 15 inch top bar..i think that can be a problem for a 4bar ... this is where i am running into trouble changing my LR 3-link to a 4 bar...

Modracer86
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posted September 29, 2005 12:20 PM  
Kromulous The tracks that i run at only adopt the imca rules but that is it i go to 2 imca tracks a year and that is 1 time to each track i run more ump tracks then i do imca. So i am going to go with short bar to see what i think this weekend and if i go to a imca track i just will have to change it. And my lr already notched down two inches i just didn't know what you was talking about earlier.

My left rear bar lengthes is 17 top bar and 15 bottom bar that is center to center of the heims.

Kromulous
Dirt Forum Champ
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posted September 29, 2005 01:22 PM  
Madnik can you make a plug to shorten that lower mount up to 18"?

nyimcamod8t
Dirt Full Roller

Total posts: 67
posted September 29, 2005 03:10 PM  
madnik,to convert it to a 4 link get the clamp on mount from harris. it will set you with a 15" lower bar and 17" upper bar.

madnik18
Dirt Full Roller

Total posts: 40
posted September 30, 2005 08:49 PM  
the prob. i am having is getting the top bar longer.. the mount for the bar is already at my backrest and no room to move it foward...
i talked to a guy at harris and i made the mistake of telling him it was a haris copy ,that i did not know when i bought it.. the guy would not help me at all then.

this is why i was asking modracer how did he get that top bar lenght 17 inches.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 30, 2005 11:09 PM  
EVERYTHING on my rearend came from harris all the birdcages brackets and bars so i am not sure what you are working with if it is a true harris copy all you need is the clamp on bracket from harris and that will set you at 17 and 15 if it is not a TRUE harris copy i don't even know where to start to help you i am new at this myself but i bet the guys on here could get you going they have helped me ALOT and would probaly be going around in little circles (spinning out) instead of going around the 3/8 mile cirles they are a great group of people and i really owe then one.

Modracer86
Dirt Forum Racer

Total posts: 79
posted September 30, 2005 11:14 PM  
Could someone please tell me what each bar does on the rear of my car
left rear bottom bar what happens when i move it up or down
left rear top bar what happens when i move it up or down
right rear swingarm what happens when i move it up or down
right rear back bar what happens when i move it up or down
Know all of this would help me make adjustments at the track like tonight the the track what very dry slick and a late model driver told me to raise my rr back bar and lower my swingarm because i was lose going in i didn't have time to do that but would it have help tighten the car off the gas? i got it set up close now but i need a little more info on what to do under whatever track conditions it may be. And again thanks in advance Les

madnik18
Dirt Full Roller

Total posts: 40
posted October 01, 2005 09:21 AM  
modracer go to www.jimmyjudd.com... click on his tech page.. he makes it simple to understand..

Modracer86
Dirt Forum Racer

Total posts: 79
posted October 02, 2005 06:32 PM  
Well Krom I went to a short bar i set it even with the pinion and 4 inches higher on the frame which from center to center it was 11 1/2 inches and the car was ok friday nite but still losing in the corners so for sat i lowered my swingarm down 1 hole and rasied my back bar 1 hole took out some right rear drive and with that short bar OMG that car was awsome i could drive in the corners alotttt harder and right back on the throttle the car would lift on the left side and the front wheel raised about 4-6 inches and it went just moving them 2 bars with that short bar did it. Krom i owe you and everyone else on here alot GREAT HELP (will probaly need more in the future) but great help and i really apperate it alot thanks alot Les

Kromulous
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posted October 03, 2005 07:38 AM  
Glad i could help.

We run the same set up, so some of your posts are helping me as well. Also, i hear Impressive Race Cars is running this same set up. I believe we may buy one of them this winter.

Anyway, how much LR bite did you end up running?

What did lowering the RR swing arm down one, and the rear bar up one do for ya? loosin entry?

We ran saturday, best the car has been so far this year. We still got a tight entry, mid corner deal but were getting it.

Modracer86
Dirt Forum Racer

Total posts: 79
posted October 03, 2005 08:03 AM  
No by lowering the swingarm and raising the back bar that took right rear drive out of the car so it would make it tighter going in i mean i could drive in hard and set the car and it would stick and stick good hi or low it was a great feeling being able to drive in and knowing it would stick and not take off to the wall or spin around with me I moved them bars at the track saterday and have not had it back on the scales in fact i don't know if i want to put it on scales lol
i might mess it up lol but before all the changes at the track i had 125 # left rear don't know if what i changed changed that or not and the short bar i loved it espically knowing that the car would stick i could get right back in the throttle and up on the bars it was just a great feeling. Now next year with a new motor (a little more hp) i might be loose again but we will worry about that next year lol

Kromulous
Dirt Forum Champ
Total posts: 796
posted October 03, 2005 09:24 AM  
That short bar will make all the side bite you need. If you need more at any time, just move both sides down evenly to the next holes. That will increase body roll, and more side bite.


Modracer86
Dirt Forum Racer

Total posts: 79
posted October 04, 2005 06:33 AM  
Thanks alot Krom i might need the extra sidebite we have a 3 day show this weekend and was not going to run the car (we know why lol) but since it is hooked up now i think i will give it a shot what could it hurt. How could i get a little more forward bite out of the car with out hurting anything else?

Kromulous
Dirt Forum Champ
Total posts: 796
posted October 04, 2005 07:25 AM  
What pull bar spring are you running? and what kind of pull bar?

You can adde more angle to the pull bar, that may help. Often it only changes how it behaves but it will help FWD bite sometimes.

Another option would be to add about 1" more rake the short bar. It will create some left side lift but may get some more FWD bite.

Dont overlook your tire pressures, as the track slicks off start lowering them, maybe 1 to 2lbs over thru the night. Lower tire pressures will create more FWD bite, but it will give more side bite as well generally. Just dont go to low and get alot of fold on the side walls.

What 3 day show are you going to?

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