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C H E A P Front sway bar idea: This is what I did.

Started by Kern Dog, July 25, 2012, 11:27:39 PM

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Kern Dog

Keep in mind that it is only 1/8" different from before. The ride is slightly firmer on rough roads, but the steering response is incredible! You turn the wheel and the car responds with no body roll. The rear end stays planted unless I lean on the loud pedal a bit. No drawbacks and minimal investment!

Dino

Quote from: Red 70 R/T 493 on July 28, 2012, 03:53:48 PM
Thanks guys!
The install is complete and I'm happy to report that the car feels great. I installed the 7/8" rear sway bar with poly bushings too. The rear stays planted in the turns and simply follows the front with no drama... unless I lean on the loud pedal. It corners flat and neutral just as I had hoped. I don't know what the cars limits are at this point. When a car UNDERsteers, you simply back off of the throttle until the front grip improves. With OVERsteer, you lift the throttle and coast or stay in it and countersteer. With a neutrally balanced car, I suppose you keep incresing speed until you run out of road?? Who knows. I don't have the stones to push the car like that on a public street. I'll have to run it on a closed course and report back. Thanks again, Greg.

I'll run it for ya!  Unfortunately I have some recent experience being an idiot on public roads.

I have a 1 1/8" front sway bar installed and have a 7/8" rear sway bar in the box.  Do you feel that my car would benefit from having that bar installed?  I was told by a member here that it would make the car understeer.
Extraordinary claims require extraordinary evidence.

Kern Dog

Probably just the opposite. I HAD that setup in my car, but it made the car want to spin out in the curves. I had to be real careful to not come in too hot. Luckily I'm pretty adept at dirt tracking cars off road, Bo Duke style! I never spun the car, but I sure have had to keep awake.
The 70 model front bar runs through the K member and uses shorter levers, making the bar more effective than the 66-69 models. You, having a 69 car, would REALLY see a greater chance of OVERsteer if you use the 7/8" rear bar. In simplest terms, you'd be making the rear suspension far more roll resistant than the front. For you to achieve a similar front to rear roll resistance as mine, you'd need a 1 3/8" front bar along with your 7/8" rear bar. The larger front bar is necessary to make up for the longer lever arms on the 66-69 sway bars.

Mike DC

Yep, the end of the car with more roll stiffness is actually the one that breaks loose more easily.

The car will ultimately handle better with more roll stiffness than stock.  But you have to stiffen it equally on both ends at once if you want to preserve the characteristics.

The leafs & torsion bars will affect it too, although to less of an extent than the swaybars.  The roll resistance of each end of the car is the sum total of the swaybar and the wheel springs on that end.  


Dino

I'm probably mistaken and was told oversteer instead of understeer.  I guess I will leave it off then, it's not like I'll be racing the car but at times I do like to take a turn a bit more sporty.  I guess the car handles just fine as it is and that's with bad shocks and skinny 14" wheels.  I have new shocks to go on and will wait until I have new wheels and tires before I decide to do with the rear bar.

Thanks guys
Extraordinary claims require extraordinary evidence.