Anti-Roll Bar for a Leaf Spring Car???

Posted By: StrokerAspen

Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 04:33 AM

Anyone have some suggestions? Who has the best bang for the buck? I am looking for the style that will have a tube welded to the diff, and a torsion bar spline'd both ends. I can not use a factory mounting sway bar. Any help would be greatly appreciated.

-Kenny

Posted By: MR_P_BODY

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 04:49 AM

S&W has what you need... the tube is welded to the
frame with the splined arms... has 2 adjuster links
that drop down to heims that go into brackets welded
on the diff.... they have all different lengths...
you would need to call them... they arent in the on
line catalog

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 05:49 AM

Thanks Mike! Of Course you have an answer. LOL. I should have just PM'd ya! What size of diameter should I be looking at? 7/8" or 1-1/8"??

-Kenny

Posted By: MR_P_BODY

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 01:20 PM

Quote:

Thanks Mike! Of Course you have an answer. LOL. I should have just PM'd ya! What size of diameter should I be looking at? 7/8" or 1-1/8"??

-Kenny

I ordered the 1 1/8 to put on a customers chassis
but if yours doesnt twist or roll over alot, the
smaller bar is fine(thats what I put on my race car)

Posted By: Dragula

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 02:18 PM

For leaf springs, that is a new one on me, but we installed one of the S&W splined anti roll bars on the race car, with a four link, and it works very well. Post pics if you go this route.

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 02:41 PM

It's not rolling over a lot, but it is topping out the drivers rear shock. It's a leaf spring car with my own version of the leaf link on it, so I guess its not a typical leaf spring car.

http://www.youtube.com/watch?v=Rw97ylw9Slk&feature=youtube_gdata_player

-Kenny

Posted By: 6PKRTSE

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 05:36 PM

Yes, leaf spring cars run them to. Do a google search. The fastest cars in the country are running them with good results. I have one on my 70' Challenger. Not the best picture but it is all I have right now for a picture of the set up.

Attached picture 7247296-100_1528[640x480].jpg

Attached picture 7247296-100_1528[640x480].jpg

Posted By: Dragula

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 05:56 PM

Quote:

Yes, leaf spring cars run them to. Do a google search. The fastest cars in the country are running them with good results. I have one on my 70' Challenger. Not the best picture but it is all I have right now for a picture of the set up.

Don't get me wrong, I am sure it will have the same effect as it does on our four link car, but is it needed? We needed it because we had nothing to control roll the higher up we chipped it.

It also doesn't look like your fully tubbed. I would never be able to fit it on my E-body with mono's and Caltrac's. Heck, the wheelie bars barely clear. And on our A-body, there isn't any room for wheelie bars. Thankfully we don't need them, but the anti-roll bar works very well.

Posted By: 6PKRTSE

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 06:02 PM

Quote:

Quote:

Yes, leaf spring cars run them to. Do a google search. The fastest cars in the country are running them with good results. I have one on my 70' Challenger. Not the best picture but it is all I have right now for a picture of the set up.

Don't get me wrong, I am sure it will have the same effect as it does on our four link car, but is it needed? We needed it because we had nothing to control roll the higher up we chipped it.

It also doesn't look like your fully tubbed. I would never be able to fit it on my E-body with mono's and Caltrac's. Heck, the wheelie bars barely clear. And on our A-body, there isn't any room for wheelie bars. Thankfully we don't need them, but the anti-roll bar works very well.

No, my Challenger is not fully tubbed. Only mini-tubbed to the frame rails. It is all that I will need. I still can get a 315 D.R. or a 29.5 x 10.5W on it with 12" wheels. I agree. it is still very tight in there for everything. Still may add wheelie bars some day.

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 07:11 PM

Thanks for the picture! I mounted my shocks almost exactly the same way, so I could probably do something similar to your anti-roll bar.

-Kenny

Posted By: MR_P_BODY

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/12/12 09:31 PM

Quote:

Thanks for the picture! I mounted my shocks almost exactly the same way, so I could probably do something similar to your anti-roll bar.

-Kenny

I like to use brackets for multi purpose use so I
would weld the axle anti roll brackets to the back
of the link brackets(forward of the shocks)...JMO

Posted By: LA360

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:12 AM

Quote:

Quote:

Yes, leaf spring cars run them to. Do a google search. The fastest cars in the country are running them with good results. I have one on my 70' Challenger. Not the best picture but it is all I have right now for a picture of the set up.

Don't get me wrong, I am sure it will have the same effect as it does on our four link car, but is it needed? We needed it because we had nothing to control roll the higher up we chipped it.

It also doesn't look like your fully tubbed. I would never be able to fit it on my E-body with mono's and Caltrac's. Heck, the wheelie bars barely clear. And on our A-body, there isn't any room for wheelie bars. Thankfully we don't need them, but the anti-roll bar works very well.

As it is on a 4 link, an Anti Roll is another tuning aid. With a factory floor it gets tight for room with running one, but with a big horsepower car it is almost a must nowadays. JMO anyway

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:42 AM

Yeah, I wouldn't say mine is a big hp car, but it is definitely rolling, and it would be nice to control it with something, and I feel an anti-roll bar is the best option for me. It is squatting the passenger side, and fully extending the drivers side. For now, i will just adjust my shocks so they do not bottom out. It is probably going to roll more doing this, but it may 60' better for now until I can add the anti-roll bar.

Attached picture 7247814-Aspen1.jpg

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:46 AM

Some more pictures on launch...

Attached picture 7247818-Aspen4.jpg

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:47 AM

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:48 AM

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:48 AM

Posted By: MR_P_BODY

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 12:50 AM

As it is on a 4 link, an Anti Roll is another tuning aid. With a factory floor it gets tight for room with running one, but with a big horsepower car it is almost a must nowadays. JMO anyway

I make it mandatory to put one on a 4 link if I'm
building the chassis

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 01:51 AM

Quote:

I make it mandatory to put one on a 4 link if I'm
building the chassis

Yeah, and with the leaf link set up under the car, the only thing that is holding it somewhat straight, is the back segment of the 6 cylinder leaf springs.

Another thing I noticed watching my videos from each side of the car, The passenger side squats as soon as the trans brake is let go. The body immediately drops. From the drivers side the diff seems to fall out of the car, until the shock tops out, and yanks the back end down. My link bars are set the same side. My instant center SHOULD be the same on both sides of the car. I guess as the power hits, it is twisting the car, thus moving the instant center on the driver side above the anti squat line, and putting the passenger side further under the anti squat line. Am I on the right track? I would assume an anti-roll bar is going to keep the instant center more constant side to side when the power is applied no?

I have the front segment of my stock leafs clamped with an extra 3/8" thick leaf added to the front segment. If I unclamp this added leaf, It will drop the back of the car down another 3/4-1" lower, thus putting my instant center lower than it currently is under the anti-squat line. The leaf spring does not need to be clamped anymore for strength, I did the extra leaf years ago when none of the leaf link stuff was on the car. Unlike the original leaf link design, I have added a bar that runs along the top of the leaf from my diff mount plate, to the front spring eye. If you look close in the pictures i have posted, The leaf is not twisted at all because the bottom bar is taking all of the hit.

-Kenny

Posted By: MR_P_BODY

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 02:02 AM

Quote:

Quote:

I make it mandatory to put one on a 4 link if I'm
building the chassis

Yeah, and with the leaf link set up under the car, the only thing that is holding it somewhat straight, is the back segment of the 6 cylinder leaf springs.

Another thing I noticed watching my videos from each side of the car, The passenger side squats as soon as the trans brake is let go. The body immediately drops. From the drivers side the diff seems to fall out of the car, until the shock tops out, and yanks the back end down. My link bars are set the same side. My instant center SHOULD be the same on both sides of the car. I guess as the power hits, it is twisting the car, thus moving the instant center on the driver side above the anti squat line, and putting the passenger side further under the anti squat line. Am I on the right track? I would assume an anti-roll bar is going to keep the instant center more constant side to side when the power is applied no?

I have the front segment of my stock leafs clamped with an extra 3/8" thick leaf added to the front segment. If I unclamp this added leaf, It will drop the back of the car down another 3/4-1" lower, thus putting my instant center lower than it currently is under the anti-squat line. The leaf spring does not need to be clamped anymore for strength, I did the extra leaf years ago when none of the leaf link stuff was on the car. Unlike the original leaf link design, I have added a bar that runs along the top of the leaf from my diff mount plate, to the front spring eye. If you look close in the pictures i have posted, The leaf is not twisted at all because the bottom bar is taking all of the hit.

-Kenny

The axle is trying to roll around the drive shaft...
the right side is trying to lift up and the drivers
side is dropping out... I'm sure thats what your seeing
plus some twisting in the body

Posted By: sshemi

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 09:20 AM

This is funny, those so called leaf links is exactly what i plan to build for my car.
I even have made drawings for it. Spooky!

My bet would be that something is not square.
You should check again if EVERYTHING is square and true.
You could also try to move weight around with the torsoon bars or ballast.

Posted By: StrokerAspen

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 04:33 PM

Joel, I am pretty sure everything is still square, it won't hurt to check next time it is up on the hoist though. The car drives straight down the track, so it should be pretty close. The diff is still located by the spring pin the way I have done it.

I documented a fair amount of the leaf link set up I have done under the car if you wanted to check it out. Here is the thread....

https://board.moparts.org/ubbthreads/show...&PHPSESSID=

I am pleased with the first outing, it stuck to the ground great all things considered. I know there is more in this set up yet!

-Kenny

Posted By: 6PKRTSE

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/13/12 06:33 PM

I found another picture of the mounting of my a.r.b. The shock mounts & the a.r.b. are both incorporated into this same horizontal bar. My speaker tray bars also run down from the main hoop to the top of this same bar.

Attached picture 7248824-100_1529.jpg

Posted By: Tobbe

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/14/12 08:52 PM

my homemade swaybar

Attached picture 7250312-IM000082.JPG

Posted By: curleysracecars

Re: Anti-Roll Bar for a Leaf Spring Car??? - 06/14/12 10:32 PM

You can build them pretty easily, but sometimes its easier just to buy a kit if you dont have the stuff readily available. As mentioned, the natural movement of the rear axle is for the driver side to push the tire into the ground, while the passenger side wants to come up off the track surface. This is the point behind an ARB...as one trys to drop, it is linked to the opposite, creating equal tire loading(hopefully).
I would say leaf spring cars would always benefit from them...who really knows what goes on under hard loads...be interesting to put a camera on the leaf spring for one pass.