What is mean by parabolic suspension?

Answer 1

Basically a HST Parabolic Spring is a spring that consists of two or more leaves. The leaves touch only in the center, where they are fixed to the axle and at the outer ends, where they are fixed to the vehicle. In between those two points the leaves do not touch each other as they do with conventional leaf springs. Each leaf represents a complete spring in it's self and will act as such. To enable this the leaf is tapered, from the center (thick) to the outer ends (thin). This tapering is parabolic, it means that every centimeter (or inch) the thickness of the leaf decreases in an amount that relates to the square function of it's length. ====== This may sound complicated but in fact it is very simple. Every single leaf will have, more or less, the shape of a complete multi leaf spring and thus it's capable to cope with the same forces. This means that the ideal parabolic spring could have only one leaf, however, this type of "mono leaf" spring will have very limited articulation/weight ratio due to high internal stresses so a 2 or 3 leaf parabolic spring can divide the stresses more evenly across the other leaves and thus more axle movement is possible. That is why we designed 2 and 3 leaf springs. An other reason to increase the number of leaves on a parabolic spring is to increase the rate (load capacity). Because every leaf is one spring we can ad or take out leaves without compromising the strength of the leaf it self. So for example we have a 3 leaf rear spring and we ad one similar leaf the rate will go up for about 30% which means that the load capacity increases by +/- 30% (depending on the shackle effect) ---- == All kits include * 2 Parabolic front springs, * 2 Parabolic rear springs, * 2 U-bolt axle kits, * 4 Trail & Track Heavy Duty shock absorbers or

4 GAZ Adjustable Heavy Duty Rally Raid shock absorbers or

4 KONI Heavy Track shocks * 4 HST greasable shackles & greasalbe spring pins (where possible) * 1 HST PolyUrethane bush kit (spring and chassis) ---- == The HST springs are being produced by an European factory who makes them according our strict description, drawings and quality standards. Every individual leaf, made out of Chrome Vanadium steel, is tapered, rolled, punched, heat treated and finally dip painted in special corrosion preventing paint leaving a thick layer. When the paint is dry the springs are being assembled. All accessories are galvanized to ensure durable protection against the elements. HST designed and protected "eXtraDura" poly urethane interleaf blocs are fitted between the leaf ends to prevent steel-to-steel contact and to improve further ride comfort by eliminating friction. ====== ====== ======