Quote:
Originally Posted by titium
Its a combination of multiple things related to his setup. Although not immediately obvious there are actually two sperate issues he's addressed with the custom components in his setup.
1) Maximum suspension travel to prevent coil bind
2) droop travel.
Having shocks with external bumpstops gives you the freedom to set your suspension bump limit to whatever you want satisfying requirement 1) however you still need to be weary when preloading the spring. For every mm of preload there is 1mm less droop travel (assuming a motion ratio of 1 for simplicity). General rule of thumb is to allow for approx 50mm droop travel (40mm minimum). With a 60N 7" spring on a 1 series which is compressed 60mm at static ride this means you're limited to approximately 10mm preload (20mm max) to satisfy the second criteria regardless of whether the spring will be coil bound at full bump travel.
Of course you can run more preload if your willing to accept less droop travel.
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I think more important than modifying bumps stops is to understand/measure your struts available travel and how it relates to your selected springs usable stroke.