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Volkswagen Torsion Bars – Maximum Angle of Twist

Below are two charts that display the maximum angle of twist before yield on our Volkswagen torsion bars. The first chart is for our 4340 torsion bars and the second chart is for our 300M race torsion bars.

Change of material does not affect rate. Shear modulus is what affects rate and that property is shared between materials. 300M however, is much stronger than 4340 and allows for a higher angle of twist before yielding giving it more memory.

4340 Torsion Bars

Bar Diameter1000 Series 21 3/4″1100 Series 24 11/16″1200 Series 26 9/16″
23mm31.0°36.7°39.3°
24mm29.7°35.2°37.6°
25mm28.5°33.7°36.1°
26mm27.5°32.5°34.8°
27mm26.4°31.3°33.5°
28mm25.5°30.1°32.2°
29mm24.6°29.1°31.1°
30mm23.8°28.1°30.1°

 

300M Torsion Bars

Bar Diameter31100 Series 24 11/16″31200 Series 26 9/16″31300 Series 29 1/2″
23mm41.4°47.7°51.7°
24mm39.6°45.6°49.5°
25mm38.0°43.8°47.5°
26mm36.5°42.1°45.7°
27mm35.2°40.6°44.0°
28mm34.0°39.2°42.5°
29mm32.8°37.8°41.0°
30mm31.7°36.5°39.6°

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