Building a 27 t on an A frame but want to add antiroll bars front and rear. What or how do you figure out arm length needed on torsion type roll bars. Will be transverse in front with coilovers in rear Thanks in advance
We need pictures and a bunch more information and details for what you are trying to accomplish. Arm length will be dictated by component clearances and motion ratios of the suspension geometry. The longer the torsion bar, the lower the spring rate per degree of rotation.
Don’t you get the arm length to fit the situation, and adjust the strength of the unit by changing the diameter of the bar?
Arm length changes the leverage, which changes the roll characteristics. So you can have more or less response from the bar depending on your arm length.
My first thought on the Model A frame. But the OP needs to clarify if he plans on using a true "torsion" bar.
A plethora of tech. Here: https://www.google.com/search?q=ste...VK3WMKHfv2C2kQ_AUICSgB&biw=1280&bih=752&udm=2
My self on the 32 sedan I need to add a Torsion bar or Sway bar on Rear , On my pass A's & 32s all built same way no issue , but this 32 sedan built same way , has alot of body roll in rear , I am thinking it is because so much heaver from B pilar rearward .. So with is a better One over the other For Body Roll , Normal driving . Torsion or Sway ,, car sit's low With 2 inch rake .. Triangler 4 bar I have changed coils , set up now with 200 .
Thanks everyone. It will be a T coupe on boxed Model A frame. Sm block ford motor, manual trans ect. I looked at welder series which has 2 different sizes 3/4 and 1'' bar sizes which I will use 3/4 on rear and 1'' up front. I know the arm lenght will change leverage but was looking for some one with real world experience. I havent called Horton yet.
This seems to be more for torision suspension where Im asking about antiroll or sway bars. A lot of good info though.
I really don't think you'll need bars at either end . Generally the suspension travel on a 2000# T is only 1 1/2" in front with a bit more in the rear .
Also depends on suspension locator type. Parallel 4-bar could benefit, but with split bones, hairpins or ladder bars, the axles are the anti-roll bars.
Front using straight axle{ Ford or aftermarket} with transvers spring; and split wishbones*= that set up is a built in swaybar; The split bones try to twist the axle when one front wheel goes up,but not the other from a bump or when going through a corner,were car trys to lean a little.>> So zero swaybar needed on front end;Its already there!. Rear ,if split bones out to out frame,also dose same. But if using a fourbar set up ,ether front or rear;;then add a swaybar> as 4 bar set up dose not try to twist any axle or frame. Many rods are built with split bones both ends,and never need to ad more swaybar.
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