Continuing our monthly sales specials, we have drastically reduced the price of our Stabila MK4 28mm rear sway bars. We have never offered these for less and we will never be priced this low again! You have until the end of the month to jump on this deal, although stock is limited and it is first come, first served. These bars really help to stiffen up the rear of those notoriously squishy MK4 chassis. Less body roll means better control, and also if you have an aggressive fitment on those wheels it can translate to less rubbing! SAY NO TO ROLL NOW 



Why a Solid Bar Over a Tubular One?

Though tubular bars are lighter and hold that advantage over the solid bar, that�s the only real advantage that the tubular bar would hold over a solid. All other advantages belong to the solid bar:

1st Advantage - For any given diameter, a solid bar will have a higher capacity to resist torsional load than a hollow bar � mainly because that stress, while mostly focused on the outer edge of each bar, is more evenly distributed though a solid bar vs only being distributed though the inner and outer walls of a tubular bar.

Quite simply a solid bar is stiffer than a tubular bar of that diameter, and is equivalent to a thicker tubular bar of the same material.

When comparing a solid sway bar with a tubular bar, you need to subtract the inside diameter (i.e. wall thickness times 2) to the fourth power from the outside diameter to the 4th power, and then take the fourth root of the both figures.

For this example we will use a standard wall thickness that is used by some manufacturers - 4mm, and compare it to our 25mm solid bar. We also assume we are using the same material and lever arm length.

Here is the basic equation: SD =(4th Root((OD^4)-(ID^4))) SD : Solid Diameter OD : Outside Diameter ID : Inside Diameter Based on this wall thickness (4mm) A 27mm tubular bar would be the rough equivalent to our 25mm solid bar.

December 14, 2014