rear sway bar questions

[yfz450_0569]

I would like to see rear sway bar set-ups, I'm building my own frame and have a parallel 4-link in the rear and now I need to decide what to do as for the sway bar. Any pics?

[N2TRUX]

Can't help you with pics, but how about some of your frame?

[yfz450_0569]

the link to my build forum is in my signature, you should see all my pictures there

now I need some info on how you set yours up or what I should go with if no pics

[7T7]

here's mine....

[yfz450_0569]

Originally Posted by 7T7

here's mine....

Thank you! I have yet seen anybod build their own sway bar, to me it looks really simple... I don't know much about them yet, maybe thats why. Do they require some special material for some of the stuff?

[7T7]

If you have a source to heat treat your stuff it's no big deal.
You can also piece one together using parts from the dirt track and asphalt guys.
If your wanting a splined arm set up that's the best way to go.
There is a way to build a torsion style sway bar and not use splines.
The one below is from Welders Series and is fairly easy to make.

[yfz450_0569]

any websites for this stuff? money's runnin short so i want to plan this out as best possible

[Ackattack]

7T7, Is that a rotor/caliper on the yoke of your rearend? Haven't seen that setup on a truck like ours....only on Rockwell 4x4 axles.

[7T7]

Originally Posted by yfz450_0569

any websites for this stuff? money's runnin short so i want to plan this out as best possible

Cheapest route is eBay.
Look up "NASCAR Sway Bar"

For new stuff, look at Speedway Engineering, Stockcar Products and Schroeder Racing Products.

[7T7]

Originally Posted by Ackattack

7T7, Is that a rotor/caliper on the yoke of your rearend? Haven't seen that setup on a truck like ours....only on Rockwell 4x4 axles.

It's a street rod thing.
Emergency/ Parking brake.

[Ackattack]

Originally Posted by 7T7

It's a street rod thing.
Emergency/ Parking brake.

I see.....never seen it before.

[leftcoast66]

Check out speedway. They do lots of dirt track stuff, and I think I remember seeing sway bar kits on there.

[Big H]

The sway bar set up under 7T7's truck is a perfect rear sway bar for our trucks. Check out the links that these guys led you to and you will find different length bars with multiple resistance choices and the correct length lever assemblies. These systems go through the frame as you can see in the photo and therefore stay tucked up out of site and looking tight. Hey that rhymes...

[abadsvt]

Speedway is the place i am going to get my sway bars from. They have a good size collection of sway bar arms, spline sway bars solid and hollow with different size thickness. There is alot more though than just slapping on a sway bar and having it work perfect. Since it is for the rear suspension you most likely won't need a big sway bar. The quick rule of thumb is lower the RC (roll center) the larger or stronger sway bar you will need. The higher the RC is the smaller or weaker sway bar. So a parrelle 4 link could and most likely has a lower RC than a trianglated 4 link. Of course it depends on how they set up the rear suspension. Also the length of the sway bar arms will affect on how much stiffness the sway bar will have. The shorter the arms are the stiffer the sway bar will be and longer the arms of course makes them a little less stiff. There is tons of additional info to properly tune your suspension that is over the top confusing. My recommendation is go with a lighter sway bar and after the truck is all built then start tuning the sway bar. It is better to have a under sized sway bar than an oversized sway bar. Good luck

Josh

[yfz450_0569]

what's the difference between a sway bar and a torsion bar?

[71'tahoe]

Hey guys,
A heads up on Speedway...there is two shops that go by "speedway" You have "speedway motors" and the other "speedway engineering" The one is alot of dirt track,streetrod,sprint car...They are in nebraska...The sway bars that you all talk of are on a different speedway site..I cant remember the site but it was smething like 1speedway.com or somehting like that..Ill do a search and see if I cant come up with some thing...Sway bars and torsion bars are kinda the same and completely different.

1) torsion bars like in old mopars,toyotas,nissan and mazda truck, act like front springs in the fact that they hold up the truck or car. A torsion bar uses a twist method to create spring rate. When the torsion bars are used as splined swaybars they do basicly the same thing using twist to deflect body roll, basicly like a normal sway bar does. If you ever messed around with old volks wagons then you know the front and rear suspensions used torsion bars much like sway bars,by requiring the twist method to raise or lower the car. Sprint cars actually use the splined torsion bars set up like swaybars to act as suspension. Hope this helps.