Given these conditions: Modern shock absorbers have variable damping rates depending on where they are in their travel. The variable rate is controlled by an internal metering rod that passing through an orifice and the diameter of the rod is different along it's length, allowing more or less fluid to flow depending on where the shock is in its travel. On a Vanagon there are at least three different lengths of stock springs available and additional after market springs of different length. The length of the springs will determine where the shocks are in their travel when at rest and how far (to what position) they will travel when in use while driving. Assuming that all the above is correct, I would expect that the effectiveness and performance of the shocks would be at least partially dependent on what set of springs they were being used with. If the spring height is wrong the shocks may not perform as the designer intended, damping may vary at the wrong point in the travel, to early or to late, to give the performance desired. Given this, how do we know what make/model of shock is right for a specific Vanagon? -- |
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