3 replies to this topic

[tac5]

hey fellas,
Happy Holidays to all. I was just looking at the pictures of the Renault engine/gearbox assembly and desmo pointed out the torsion bars. Now are these used instead of springs? Is the modulus of elasticity used as the spring that is needed to resist motion. Is it as simple as a torsional deformation? Any diagrams, would be great!!!!!

[PDA]

Coil springs are just torsion bars which have been coiled to make them more compact. They work by exactly the same principle: the twisting of a (usually) metal bar.

[Ray Bell]

Coils also simplify the issue of feeding the load into the chassis...

[Ben]

If you're using push/pull rods, the rocker needs an axle to rotate on and a torsion bar is ideal. In this situation it's arguably as simple as a coil spring.

One main reason F1 cars use torsion bars is that a coil spring creates a large bending moment that increases friction within the damper (assuming it's co-axial).

Ben