How are torsion bars calculated?

Torsion bars are usually rated on torque/deg or in-lbs/deg, N-m/deg or what ever, then you have to look at the arm length and vectors to get the wheel rates. To calculate the torsional rate the formula is: Kt=pi*d^4*G/(32*L) where G is the shear modulus (11 E6 psi) and L is the active length, and d is the diameter.

How are sway bar rates calculated?

What Affects The Rate of The Sway Bar

The length of the portion of the bar that will twist affects its rate.
The outer diameter of the bar affects its rate.
Hollow bars are less stiff than solid bars, so the wall thickness affects the rate.
The arm length affects the rate, the longer the arm, the softer the bar rate.

How do you calculate torsion springs?

Torsion spring torque is calculated the same way you calculate a working load. To calculate the torque of a torsional spring you must divide the spring rate by the amount of degrees of deflection your spring will be required to travel.

How do you measure a sway bar?

To get the diameter of your sway bar, take your circumference and divide it by π (that’s pi or 3.14159). The result of this calculation is the diameter of your bar.

How are wheel rates calculated?

This motion ration can be estimate by knowing the distance of the wheel to the pivot point of the suspension arm and the distance to the spring from the pivot point. So the equation for Wheel Rate is the Motion Ratio squared times the Spring Rate.

How far can you crank torsion bars?

You can go as high as long as you maintain at least 5/8’s of a inch between the UCA and frame stop and that also includes needing to fix the OE shock due to being to short. Either a lower mount or longer shock.

How do you lift a torsion bar suspension?

You can perform a torsion key lift by simply turning up the vehicle’s existing adjusters or by replacing the stock keys with a set designed to increase ride height. It controls the bar’s distance from the ground and ensures the vehicle stays at the set height.