Torsion bars for better handling; your experience?

Hemi Denny! as a Kart racer for about thirty years( I do not know about a "cart")yes they do have suspension. It is in the chassis design. Manufacturers go to great lenghts designing different chassis designs to achieve different caracteristics with euro teams turning up with over a dozen different chassis to test at a race meeting. Rear axles hubs wheel designs, front stub axles and front hub designs all play apart in the level of handling as a Kart needs to release off a corner which gives a speed advantage down the straight. Now if you think a Kart has no suspension so it is easy to tune think again.